homebridge-plc

Homebridge plugin for SIEMENS Step7 and compatible PLCs

Note

Now compatible with the beta version of Homebridge 2.0.0
Now compatible with Node.js v22 and the latest Docker images of Homebridge

SIEMENS S7 PLC plugin for Homebridge

This plugin uses snap7 via node-snap7, making it compatible with the following PLCs:
- S7 300
- S7 400
- S7 1200 (see Snap7 notes)
- S7 1500 (see Snap7 notes)
- Compatible PLCs such as YASKAWA / VIPA:
  - SLIO e.g.
    - 013-CCF0R00
    - 014-CEF0R01
    - 015-CEFNR00
    - 015-CEFPR01
    - 017-CEFPR00
  - MICRO PLC
  - 300S+
- The plugin uses PG-Communication (programming device communication) to connect to the PLC
- Optionally, OP-Communication (HMI or panel communication) can also be used to connect to the PLC
- NOTE: You may need to increase the connection resources for PG-Communication or OP-Communication within Siemens Simatic Manager or Siemens TIA Portal. The default value is 1, which may lead to connection problems when using the programming tool or panel and this plugin simultaneously.
Tested with S7-300, S7-1200, and S7-300 compatible PLCs from YASKAWA and VIPA
Implementation is based on the documentation of the Homebridge API
Supports polling of the PLC from the homebridge-plc plugin with a per-accessory defined interval
Supports push from the PLC to the homebridge-plc plugin via HTTP PUT/GET
Supports control of PLC accessories via HTTP PUT/GET
Supported Accessories:

Installation

Basic Installation
- Install this plugin using: sudo npm install -g homebridge-plc
- Edit config.json to add the PLC platform and its accessories.
- Run Homebridge
Install via Homebridge UI (recommended)
- Search for plc on the plugin screen of Homebridge UI.
- Find homebridge-plc
- Click install.
- Edit configuration

Homebridge configuration

Platform

The plugin is configured as a single platform by defining a PLC platform. Parameters:

ip: the IPv4 address of the PLC
rack: the rack number of the PLC (typically 0)
slot: the slot number of the PLC (S7 300/400 typically 2, S7 1200/1500 typically 1)
communicationOP: (optional) when set to true, OP-Communication is used instead of PG-Communication. Default is false to use PG-Communication.
enablePolling: (optional) when set to true, a background task is executed every second to enable polling for the accessories. Default is false.
defaultPollInterval: (optional) default polling interval for all accessories in seconds. Default value is 10 seconds.
distributePolling: (optional) when set to true, the polling of the accessories does not start at the same time to distribute the PLC load for the queries. Default is false.
enablePush: (optional) when set to true, the configured port is opened to push updates of values from the PLC to the plugin. Default is false.
enableControl: (optional) when set to true, the configured port is opened to control accessories by HTTP request. Default is false.
port: (optional) port for HTTP server to handle incoming HTTP requests for push and control functionality. Default port is 8888.
Experimental features
- forward: (optional) there is a limit of a maximum of 149 supported accessories by Homebridge. To overcome this limit, you can create a second instance of Homebridge running homebridge-plc and forward all push and control with no matching db to the other instance. Set the destination address of the second instance e.g. http:\\127.0.0.1:8889.
- mirror: (optional) There are environments where it could make sense to share the same accessories on two Homebridge instances to allow pairing with another Home with Apple Home App or Home Assistant. This option mirrors all values read from the PLC by this instance to a second instance. It also forwards all push requests to the second instance. The option enablePush has to be enabled on the second instance. Set the destination address of the second instance e.g. http:\\192.168.1.11:8888.

Accessories

In the platform, you can declare different types of accessories.
The notation (push support) identifies that the parameter supports direct updates from the PLC.
The notation (control support) identifies parameters that can be controlled by HTTP request.

LightBulb as `PLC_LightBulb`

Normal light. See also simple PLC example for single bit and separate bits.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
get_On: (push support) offset and bit to get the current status S7 type Bool e.g. 55.0 for DB4DBX55.0
Single Bit for on/off:
- set_On: (control support) offset and bit to set on/off S7 type Bool e.g. 55.0 for DB4DBX55.0 (could be the same as get_On)
Separate Bits for on/off:
- set_On: (control support) offset and bit to set on S7 type Bool PLC has to set to 0 e.g. 55.1 for DB4DBX55.1
- set_Off: offset and bit to set off S7 type Bool PLC has to set to 0 e.g. 55.2 for DB4DBX55.2
get_Brightness: (optional) (push support) get brightness value S7 type Byte e.g. 56 for DB4DBB56
set_Brightness: (optional but required when get_Brightness is defined) (control support) set brightness value S7 type Byte e.g. 57 for DB4DBB57
Brightness range definitions (optional)
- minBrightnessValue default value: 0
- maxBrightnessValue default value: 100
- minBrightnessStep default value: 1

Outlet as `PLC_Outlet`

Outlet, possible to show also as ventilator or light.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
get_On: (push support) offset and bit to get the current status S7 type Bool e.g. 55.0 for DB4DBX55.0
Single Bit for on/off:
- set_On: (control support) offset and bit to set on/off S7 type Bool e.g. 55.0 for DB4DBX55.0 (could be the same as get_On)
Separate Bits for on/off:
- set_On_Set: (control support) offset and bit to set on S7 type Bool PLC has to set to 0 e.g. 55.1 for DB4DBX55.1
- set_On_Reset: offset and bit to set off S7 type Bool PLC has to set to 0 e.g. 55.2 for DB4DBX55.2

Switch as `PLC_Switch`

Switch, possible to show also as ventilator or light.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
get_On: (push support) offset and bit to get the current status S7 type Bool e.g. 55.0 for DB4DBX55.0
Single Bit for on/off:
- set_On: (control support) offset and bit to set on/off S7 type Bool e.g. 55.0 for DB4DBX55.0 (could be the same as get_On)
Separate Bits for on/off:
- set_On: (control support) offset and bit to set on S7 type Bool PLC has to set to 0 e.g. 55.1 for DB4DBX55.1
- set_Off: offset and bit to set off S7 type Bool PLC has to set to 0 e.g. 55.2 for DB4DBX55.2

Temperature Sensor as `PLC_TemperatureSensor`

Normal temperature sensor.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
Current Temperature:
- get_CurrentTemperature: (push support) offset to get current temperature S7 type Real e.g. 55 for DB4DBD55
- Temperature range (optional)
  - minTemperatureValue default value: -270
  - maxTemperatureValue default value: 100
  - minTemperatureStep default value: 0.1
get_StatusTampered: (optional) (push support) offset and bit for tamper detection S7 type Bool (e.g., 55.2 for DB4DBX55.2) (Home app shows this only within the options)
- false: ok
- true: tampered
get_StatusLowBattery: (optional) (push support) offset and bit for battery low detection S7 type Bool (e.g., 55.3 for DB4DBX55.3) (Home app does not inform with push notification)
- false: ok
- true: battery low

Humidity Sensor as `PLC_HumiditySensor`

Normal humidity sensor.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
Current Humidity:
- get_CurrentRelativeHumidity: (push support) offset to get current humidity S7 type Real e.g. 55 for DB4DBD55
- Humidity range (optional)
  - minHumidityValue default value: 0
  - maxHumidityValue default value: 100
  - minHumidityStep default value: 1
get_StatusTampered: (optional) (push support) offset and bit for tamper detection S7 type Bool (e.g., 55.2 for DB4DBX55.2) (Home app shows this only within the options)
- false: ok
- true: tampered
get_StatusLowBattery: (optional) (push support) offset and bit for battery low detection S7 type Bool (e.g., 55.3 for DB4DBX55.3) (Home app does not inform with push notification)
- false: ok
- true: battery low

Thermostat as `PLC_Thermostat`

Temperature/humidity sensor with regulation.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
Current Temperature:
- get_CurrentTemperature: (push support) offset to get current temperature S7 type Real e.g. 0 for DB4DBD0
- Temperature range (optional)
  - minTemperatureValue default value: -270
  - maxTemperatureValue default value: 100
  - minTemperatureStep default value: 0.1
Target Temperature:
- get_TargetTemperature: (push support) offset to get target temperature S7 type Real e.g. 4 for DB4DBD4
- set_TargetTemperature: (control support) offset to set target temperature S7 type Real e.g. 4 for DB4DBD4 (can have the same value as get_TargetTemperature)
- Target temperature range definitions (optional)
  - minTargetTemperatureValue default value: 10
  - maxTargetTemperatureValue default value: 38
  - minTargetTemperatureStep default value: 0.1 Note: lower values may not be supported by Homekit
- Current Humidity:
  - get_CurrentRelativeHumidity: (optional) (push support) offset to get current humidity S7 type Real e.g. 0 for DB4DBD0
- Humidity range (optional)
  - minHumidityValue default value: 0
  - maxHumidityValue default value: 100
  - minHumidityStep default value: 1
Target Humidity:
- get_TargetRelativeHumidity: (optional) (push support) offset to get target humidity S7 type Real e.g. 4 for DB4DBD4
- set_TargetRelativeHumidity: (optional) (control support) offset to set target humidity S7 type Real e.g. 4 for DB4DBD4 (can have the same value as get_TargetRelativeHumidity)
- Target relative humidity range definitions (optional)
  - minTargetHumidityValue default value: 0
  - maxTargetHumidityValue default value: 100
  - minTargetHumidityStep default value: 1
Current State:
- get_CurrentHeatingCoolingState: (optional) (push support) offset to get current heating/cooling state S7 type Byte e.g. 8 for DB4DBB8. When not defined, fixed 1: heating is used.
  - 0: inactive (shown as green in home app)
  - 1: heating (shown as orange in home app)
  - 2: cooling (shown as blue in home app)
- mapGetCurrentHeatingCoolingState: (optional) define mapping array for get_CurrentHeatingCoolingState. The PLC value is used as an index into the table. e.g. [0, 2] which maps the PLC value 0->0 1->2 when the PLC supports only two states with 0:inactive and 1:cooling.
Target State:
- get_TargetHeatingCoolingState: (optional) (push support) offset to get target heating/cooling state. S7 type Byte e.g. 9 for DB4DBB9. When not defined, fixed 3: automatic is used.
  - 0: off
  - 1: heat
  - 2: cool
  - 3: automatic
- mapGetTargetHeatingCoolingState: (optional) define mapping array for get_TargetHeatingCoolingState. The PLC value is used as an index into the table. e.g. [0, 3] which maps the PLC value 0->0 1->3 when the PLC supports only two states with 0:off and 1:automatic.
- set_TargetHeatingCoolingState: (optional) (control support) offset to set target heating/cooling state. Can be identical with get_TargetHeatingCoolingState. Has to be defined when get_TargetHeatingCoolingState is defined. When not defined, writes changes are ignored. S7 type Byte e.g. 9 for DB4DBB9.
  - 0: off
  - 1: heat
  - 2: cool
  - 3: automatic
- mapSetTargetHeatingCoolingState: (optional) define mapping array for set_TargetHeatingCoolingState. The home app value is used as an index into the table. e.g. [0, 1, 0, 3] which maps the PLC value 0->0 1->1 2->0, 3->3 when the PLC supports only two states with 0:off and 1:heat and 3:automatic. The state cool is mapped to off.
get_StatusTampered: (optional) (push support) offset and bit for tamper detection S7 type Bool (e.g., 55.2 for DB4DBX55.2) (Home app shows this only within the options)
- false: ok
- true: tampered
get_StatusLowBattery: (optional) (push support) offset and bit for battery low detection S7 type Bool (e.g., 55.3 for DB4DBX55.3) (Home app does not inform with push notification)
- false: ok
- true: battery low

Humidifier/Dehumidifier as `PLC_HumidifierDehumidifier`

Humidifier and/or Dehumidifier.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
get_CurrentRelativeHumidity: (push support) offset to get current humidity S7 type Real e.g. 55 for DB4DBD55
get_Active: (push support) offset and bit to get the current status S7 type Bool e.g. 55.0 for DB4DBX55.0
Single Bit for on/off:
- set_Active: (control support) offset and bit to set on/off S7 type Bool e.g. 55.0 for DB4DBX55.0 (could be the same as get_Active)
Separate Bits for on/off:
- set_Active_Set: (control support) offset and bit to set on S7 type Bool PLC has to set to 0 e.g. 55.1 for DB4DBX55.1
- set_Active_Reset: offset and bit to set off S7 type Bool PLC has to set to 0 e.g. 55.2 for DB4DBX55.2
Current State:
- get_CurrentHumidifierDehumidifierState: (optional) (push support) offset to get current state. Default value 1:idle. S7 type Byte e.g. 55 for DB4DBD55
  - 0: inactive
  - 1: idle
  - 2: humidifying
  - 3: dehumidifying
- mapGetCurrentHumidifierDehumidifierState: (optional) define mapping array for get_CurrentHumidifierDehumidifierState. The PLC value is used as an index into the table. e.g. [1, 3] which maps the PLC value 0->1 1->3 when the PLC supports only two states with 0:idle and 1:dehumidifying.
Target State:
- default_TargetHumidifierDehumidifierState: (optional) defines an alternative value that's returned when get_TargetHumidifierDehumidifierState is not defined. Default value 0:auto
  - 0: auto (humidifier or dehumidifier)
  - 1: humidifier
  - 2: dehumidifier
- get_TargetHumidifierDehumidifierState: (optional) (push support) offset to get current target state S7 type Byte e.g. 55 for DB4DBD55
  - 0: auto (humidifier or dehumidifier)
  - 1: humidifier
  - 2: dehumidifier
- set_TargetHumidifierDehumidifierState: (optional) (control support) offset to set current target state. Needs to be defined when get_TargetHumidifierDehumidifierState is set. S7 type Byte e.g. 55 for DB4DBD55
  - 0: auto (humidifier or dehumidifier)
  - 1: humidifier
  - 2: dehumidifier
- mapGetTargetHumidifierDehumidifierState: (optional) define mapping array for get_TargetHumidifierDehumidifierState. The PLC value is used as an index into the table. e.g. [2,1] which maps the PLC value 0->1 1->2 when the PLC supports only one state with 0:dehumidifier 1:humidifier.
- mapSetTargetHumidifierDehumidifierState: (optional) define mapping array for set_TargetHumidifierDehumidifierState. The home app value is used as an index into the table. e.g. [2, 2, 2] writes always the value 2 to the PLC regardless of what's set in the home app.
Rotation Speed:
- Byte:
  - get_RotationSpeedByte: (optional) (push support) offset to get rotation speed state S7 type Byte e.g. 8 for DB4DBB8.
  - set_RotationSpeedByte: (optional but required when get_RotationSpeedByte is defined) (push support) offset to get set speed state. S7 type Byte e.g. 9 for DB4DBB9.
- Real:
  - get_RotationSpeed: (optional) (push support) offset to get rotation speed state S7 type Real e.g. 8 for DB4DBB8.
  - set_RotationSpeed: (optional but required when get_RotationSpeed is defined) (push support) offset to get set speed state. S7 type Real e.g. 9 for DB4DBB9.
Swing Mode:
- get_SwingMode: (optional) (push support) offset to get swing mode. S7 type Byte e.g. 8 for DB4DBB8.
  - 0: swing disabled
  - 1: swing enabled
- set_SwingMode: (optional) (control support) offset to set swing mode. S7 type Byte e.g. 9 for DB4DBB9.
  - 0: swing disabled
  - 1: swing enabled
Water Level:
- get_WaterLevel: (optional) (push support) offset to water level S7 type Real e.g. 8 for DB4DBD8.
get_StatusTampered: (optional) (push support) offset and bit for tamper detection S7 type Bool (e.g., 55.2 for DB4DBX55.2) (Home app shows this only within the options)
- false: ok
- true: tampered
get_StatusLowBattery: (optional) (push support) offset and bit for battery low detection S7 type Bool (e.g., 55.3 for DB4DBX55.3) (Home app does not inform with push notification)
- false: ok
- true: battery low

Shutters as `PLC_WindowCovering`, windows as `PLC_Window`, and doors as `PLC_Door`

Motor-driven blinds, windows, and doors. Supports also manually driven blinds, windows, and doors to show just the current position in percent. Note: If your sensor shows only open/close, you may also have a look at PLC_ContactSensor.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
adaptivePolling: (optional) when set to true, the current position will be polled until the target position is reached. Polling starts with the set target position from the home app. This allows showing the shutter as opening... or closing... in the home app during movement.
adaptivePollingInterval: (optional) poll interval in seconds during high-frequency polling. Default value is 1 second.
forceCurrentPosition: (optional) when set to true, the position set by set_TargetPosition is directly used as the current position. By this, it seems in the home app as the target position was directly reached. This is recommended when not using adaptivePolling or pushing the value from the PLC.
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
Current position:
- get_CurrentPosition: (push support) offset to get current position 0:closed 100:open S7 type Byte e.g. 0 for DB4DBB0
  - 0: closed
  - in between: partly open
  - 100: open
- invertPosition: (optional) set to true to invert the values of current and target position from 0:closed 100:open to 100:closed 0:open
- mapGetCurrentPosition: (optional) define mapping array for get position. The PLC value is used as an index into the table. e.g. [0, 25, 100] which maps the PLC value 0->0 1->25 2->100 this is useful e.g. for window open state.
Target position:
- If one of the (optional) target position settings is specified, all are needed. If not specified, it is not movable and sticks to the current position.
- get_TargetPosition: (optional) (push support) offset to get target position S7 type Byte e.g. 1 for DB4DBB1 (can have the same value as set_TargetPosition)
  - 0: closed
  - in between: partly open
  - 100: open
- set_TargetPosition: (optional) (control support) offset to set current position 0:closed 100:open S7 type Byte e.g. 2 for DB4DBB2 (can have the same value as get_TargetPosition)
  - 0: closed
  - in between: partly open
  - 100: open
get_PositionState: (optional) (push support) offset to current movement state. If not defined, fixed 2 is returned. S7 type Byte e.g. 3 for DB4DBB3
- 0: down
- 1: up
- 2: stop
set_HoldPosition: (optional) (control support) offset and bit to set to 1 to stop movement. (Seems not to be used by HomeApp) When not defined, writes will be ignored. S7 type Bool PLC has to set to 0 e.g. 55.1 for DB4DBX55.1

Occupancy Sensor as `PLC_OccupancySensor`

Presence detection sensor.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
invertOccupancy: (optional) set to true to invert the bit to false:presence and true:no-presence.
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
get_OccupancyDetected: (push support) offset and bit to get the current status S7 type Bool e.g. 55.0 for DB4DBX55.0
- false: no occupancy
- true: occupancy detected
get_StatusTampered: (optional) (push support) offset and bit for tamper detection S7 type Bool (e.g., 55.2 for DB4DBX55.2) (Home app shows this only within the options)
- false: ok
- true: tampered
get_StatusLowBattery: (optional) (push support) offset and bit for battery low detection S7 type Bool (e.g., 55.3 for DB4DBX55.3) (Home app does not inform with push notification)
- false: ok
- true: battery low

Motion Sensor as `PLC_MotionSensor`

Movement detection sensor.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
invertMotionDetected: (optional) set to true to invert the bit to false:motion and true:no-motion.
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
get_MotionDetected: (push support) offset and bit to get the current status S7 type Bool e.g. 55.0 for DB4DBX55.0
- false: no motion
- true: motion detected
get_StatusTampered: (optional) (push support) offset and bit for tamper detection S7 type Bool (e.g., 55.2 for DB4DBX55.2) (Home app shows this only within the options)
- false: ok
- true: tampered
get_StatusLowBattery: (optional) (push support) offset and bit for battery low detection S7 type Bool (e.g., 55.3 for DB4DBX55.3) (Home app does not inform with push notification)
- false: ok
- true: battery low

Contact Sensor as `PLC_ContactSensor`

Generic contact sensor. The home app allows displaying as window, door, blind/shutter, garage door, or contact sensor.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
invertContactSensorState: (optional) set to true to invert the bit to false:closed and true:open.
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
get_ContactSensorState: (push support) offset and bit to get the current status S7 type Bool e.g. 55.0 for DB4DBX55.0
- false: closed
- true: open
get_StatusTampered: (optional) (push support) offset and bit for tamper detection S7 type Bool (e.g., 55.2 for DB4DBX55.2) (Home app shows this only within the options)
- false: ok
- true: tampered
get_StatusLowBattery: (optional) (push support) offset and bit for battery low detection S7 type Bool (e.g., 55.3 for DB4DBX55.3) (Home app does not inform with push notification)
- false: ok
- true: battery low

Leak Sensor as `PLC_LeakSensor`

Leak sensor.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
invertLeakDetected: (optional) set to true to invert the bit to false:leak detected and true:no leak detected.
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
get_LeakDetected: (push support) offset and bit to get the current status S7 type Bool e.g. 55.0 for DB4DBX55.0
- false: no leak detected
- true: leak detected
get_StatusTampered: (optional) (push support) offset and bit for tamper detection S7 type Bool (e.g., 55.2 for DB4DBX55.2) (Home app shows this only within the options)
- false: ok
- true: tampered
get_StatusLowBattery: (optional) (push support) offset and bit for battery low detection S7 type Bool (e.g., 55.3 for DB4DBX55.3) (Home app does not inform with push notification)
- false: ok
- true: battery low

Faucet as `PLC_Faucet`

Watering for the garden.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
get_Active: (push support) offset and bit to get the current status S7 type Bool e.g. 55.0 for DB4DBX55.0
Single Bit for on/off:
- set_Active: (control support) offset and bit to set on/off S7 type Bool e.g. 55.0 for DB4DBX55.0 (could be the same as get_Active)
Separate Bits for on/off:
- set_Active: (control support) offset and bit to set on S7 type Bool PLC has to set to 0 e.g. 55.1 for DB4DBX55.1
- set_Deactivate: offset and bit to set off S7 type Bool PLC has to set to 0 e.g. 55.2 for DB4DBX55.2

Valve as `PLC_Valve`

Valve configurable as generic valve, irrigation, shower head, or water faucet.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
ValveType: configures the valve type that is returned
- 0: generic valve
- 1: irrigation
- 2: shower head
- 3: water faucet
get_Active: (push support) offset and bit to get the current status S7 type Bool e.g. 55.0 for DB4DBX55.0
Single Bit for on/off:
- set_Active: (control support) offset and bit to set on/off S7 type Bool e.g. 55.0 for DB4DBX55.0 (could be the same as get_Active)
Separate Bits for on/off:
- set_Active: (control support) offset and bit to set on S7 type Bool PLC has to set to 0 e.g. 55.1 for DB4DBX55.1
- set_Deactivate: offset and bit to set off S7 type Bool PLC has to set to 0 e.g. 55.2 for DB4DBX55.2
If one of the (optional) duration settings is specified, all are needed:
- get_SetDuration: (optional) (push support) offset to get duration 0..3600 sec S7 type Time e.g. 10 for DB4DBD10
- set_SetDuration: (optional) (control support) offset to set duration 0..3600 sec S7 type Time e.g. 14 for DB4DBD14
- get_RemainingDuration: (optional) (push support) offset to get remaining duration 0..3600 sec S7 type Time e.g. 18 for DB4DBD18

Security System as `PLC_SecuritySystem`

Alarm system.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state of the security system will be polled.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
Current State:
- get_SecuritySystemCurrentState: (push support) offset to current security system state S7 type Byte e.g. 3 for DB4DBB3
  - 0: armed stay at home
  - 1: armed away from home
  - 2: armed night
  - 3: disarmed
  - 4: alarm triggered
- mapGetSecuritySystemCurrentState: (optional) define mapping array for get security system state. The PLC value is used as an index into the table. e.g. [3, 1] which maps the PLC value 0->3 1->2 when the PLC supports only two states with 0:disarmed and 1:armed and 2:alarm.
Target State:
- set_SecuritySystemTargetState: (control support) offset to set target security system state S7 type Byte e.g. 5 for DB4DBB4
- get_SecuritySystemTargetState: (push support) offset to set target security system state S7 type Byte e.g. 6 for DB4DBB6
  - 0: armed stay at home
  - 1: armed away from home
  - 2: armed night
  - 3: disarmed
- mapSetSecuritySystemTargetState: (optional) define mapping array for set security system state. The home app value is used as an index into the table. e.g. [1, 1, 1, 0, 2] which maps the PLC value 0->1 1->1 2->1, 3->0, 4->2 when the PLC supports only two states with 0:disarmed and 1:armed and 2:alarm.
- mapGetSecuritySystemTargetState: (optional) define mapping array for get security system state. The PLC value is used as an index into the table. e.g. [3, 1] which maps the PLC value 0->3 1->2 when the PLC supports only two states with 0:disarmed and 1:armed and 2:alarm.

Button as `PLC_StatelessProgrammableSwitch`, Doorbell as `PLC_Doorbell`

Stateless switch from PLC to home app.

Trigger actions in the home app only works with control center e.g. AppleTV or HomePod. Polling or push from PLC required!
Polling mode homebridge-plc polls isEvent. The PLC sets the bit to true. homebridge-plc reads get_ProgrammableSwitchEvent and sets the isEvent bit to false.
Push mode PLC informs homebridge-plc by HTTP request with the value for get_ProgrammableSwitchEvent.
Control External simulates event by HTTP request with the value for get_ProgrammableSwitchEvent.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
isEvent: offset and bit that is polled by homebridge-plc. PLC has to set to true. When true, the event is read from get_ProgrammableSwitchEvent and set to false by homebridge-plc to confirm that the event is handled. S7 type Bool e.g. 55.1 for DB4DBX55.1 (polling only, not used for push)
get_ProgrammableSwitchEvent: (push support) (control support) offset to read current event of the switch. This is reported towards the home app S7 type Byte e.g. 3 for DB4DBB3
- 0: single press
- 1: double press
- 2: long press

Lock mechanism as `PLC_LockMechanism`

Lock mechanism.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
forceCurrentLockState: (optional) when set to true, the position set by set_LockTargetState is directly used as the current state. By this, it seems in the home app as the target state was directly reached. This is recommended when not using enablePolling or pushing the value from the PLC.
- get_LockCurrentState: (push support) offset to read current state S7 type Byte e.g. 3 for DB4DBB3
  - 0: unsecured
  - 1: secured
  - 2: jammed
  - 3: unknown
get_LockTargetState: (push support) offset to read target state S7 type Byte e.g. 3 for DB4DBB3
- 0: unsecured
- 1: secured
set_LockTargetState: (control support) offset to write target state S7 type Byte e.g. 3 for DB4DBB3
- 0: unsecured
- 1: secured

Boolean lock mechanism as `PLC_LockMechanismBool`

Lock mechanism implemented as bool on the PLC. NOTE: The convention 0=false: closed/secured 1=true: open/unsecured

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
forceCurrentLockState: (optional) when set to true, the state set by set_LockTargetState is directly used as the current state. By this, it seems in the home app as the target state was directly reached. This is recommended when not using enablePolling or pushing the value from the PLC.
invertLockState: (optional) when set to true, all states are inverted (current and target state) false: unsecured and true: secured.
get_LockCurrentStateBool: (push support) offset to read current state S7 type Bool e.g. 3.1 for DB4DBB3
- false: secured
- true: unsecured
get_LockTargetStateBool: (push support) offset to read target state S7 type Bool e.g. 3.1 for DB4DBB3
- false: secured
- true: unsecured
Single Bit for secure/unsecured:
- set_LockTargetStateBool: (control support) offset to write target state S7 type Bool e.g. 3.1 for DB4DBB3
  - false: secured
  - true: unsecured
Separate Bits for secure/unsecured:
- set_LockTargetStateBool_Secured: (control support) offset and bit to set to true when switching to target state secured S7 type Bool PLC has to set to false e.g. 3.3 for DB4DBX55.1
- set_LockTargetStateBool_Unsecured: offset and bit to set to true when switching to target state unsecured S7 type Bool PLC has to set to false e.g. 3.4 for DB4DBX55.2

Garage door as `PLC_GarageDoorOpener`

Garage door.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
forceCurrentDoorState: (optional) when set to true, the position set by set_TargetDoorState is directly used as the current state. By this, it seems in the home app as the target state was directly reached. This is recommended when not using enablePolling or pushing the value from the PLC.
get_ObstructionDetected: (optional) (push support) offset and bit for obstruction detection. True means that the door was blocked. S7 type Bool e.g. 55.1 for DB4DBX55.1
get_CurrentDoorState: (push support) offset to read current state S7 type Byte e.g. 3 for DB4DBB3
- 0: open
- 1: closed
- 2: opening
- 3: closing
- 4: stopped
get_TargetDoorState: (push support) offset to read target state S7 type Byte e.g. 3 for DB4DBB3
- 0: open
- 1: closed
set_TargetDoorState: (control support) offset to write target state S7 type Byte e.g. 3 for DB4DBB3
- 0: open
- 1: closed

Smoke Sensor as `PLC_SmokeSensor`

Fire alarm.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
get_SmokeDetected: (push support) offset and bit for smoke detection. S7 type Bool e.g. 55.1 for DB4DBX55.1
- false: ok
- true: smoke detected
get_StatusTampered: (optional) (push support) offset and bit for tamper detection S7 type Bool (e.g., 55.2 for DB4DBX55.2) (Home app shows this only within the options)
- false: ok
- true: tampered
get_StatusLowBattery: (optional) (push support) offset and bit for battery low detection S7 type Bool (e.g., 55.3 for DB4DBX55.3) (Home app does not inform with push notification)
- false: ok
- true: battery low

Fan as `PLC_Fan`

Ventilator.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
Current State:
- default_CurrentFanState: (optional) defines an alternative value that's returned when get_CurrentFanState is not defined. Default value 0:inactive
- get_CurrentFanState: (optional) (push support) offset to get current heating/cooling state S7 type Byte e.g. 8 for DB4DBB8.
  - 0: inactive
  - 1: idle
  - 2: blowing
- mapCurrentFanStateGet: (optional) define mapping array for get_CurrentFanState. The PLC value is used as an index into the table. e.g. [0, 2] which maps the PLC value 0->1 1->2 when the PLC supports only two states with 0:idle and 1:blowing.
Target State:
- default_TargetFanState: (optional) defines an alternative value that's returned when get_TargetFanState is not defined. Default value 0:manual
  - 0: manual
  - 1: automatic
- get_TargetFanState: (optional) (push support) offset to get target heating/cooling state. S7 type Byte e.g. 9 for DB4DBB9. When not defined, fixed 1: automatic is used.
  - 0: manual
  - 1: automatic
- set_TargetFanState: (optional but required when get_TargetFanState is defined) (control support) offset to get target heating/cooling state. S7 type Byte e.g. 9 for DB4DBB9. When not defined, fixed 1: automatic is used.
  - 0: manual
  - 1: automatic
- mapTargetFanStateGet: (optional) define mapping array for get_TargetFanState. The PLC value is used as an index into the table. e.g. [1, 0] which maps the PLC value 0->1 1->0 when the PLC supports only two states with 0:automatic and 1:manual.
- mapTargetFanStateSet: (optional) define mapping array for set_TargetFanState. The home app value is used as an index into the table. e.g. [1, 0] which maps the PLC value 0->1 1->0 when the PLC supports only two states with 0:automatic and 1:manual.
Rotation Direction:
- get_RotationDirection: (optional) (push support) offset to get rotation direction state. S7 type Byte e.g. 9 for DB4DBB9. When not defined, fixed 0: clockwise is used.
  - 0: clockwise
  - 1: counterclockwise
- set_RotationDirection: (optional) (control support) offset to set rotation direction state. S7 type Byte e.g. 9 for DB4DBB9.
  - 0: clockwise
  - 1: counterclockwise
- mapRotationDirectionGet: (optional) define mapping array for get_RotationDirection. The PLC value is used as an index into the table. e.g. [1, 0] inverts the direction.
- mapRotationDirectionSet: (optional) define mapping array for set_RotationDirection. The home app value is used as an index into the table. e.g. [1, 0] inverts the direction.
Rotation Speed:
- Byte:
  - get_RotationSpeedByte: (optional) (push support) offset to get rotation speed state S7 type Byte e.g. 8 for DB4DBB8.
  - set_RotationSpeedByte: (optional but required when get_RotationSpeedByte is defined) (push support) offset to get set speed state. S7 type Byte e.g. 9 for DB4DBB9.
- Real:
  - get_RotationSpeed: (optional) (push support) offset to get rotation speed state S7 type Real e.g. 8 for DB4DBB8.
  - set_RotationSpeed: (optional but required when get_RotationSpeed is defined) (push support) offset to get set speed state. S7 type Real e.g. 9 for DB4DBB9.
get_Active: (push support) offset and bit to get the current status S7 type Bool e.g. 55.0 for DB4DBX55.0
Single Bit for on/off:
- set_Active: (control support) offset and bit to set on/off S7 type Bool e.g. 55.0 for DB4DBX55.0 (could be the same as get_Active)
Separate Bits for on/off:
- set_Active_Set: (control support) offset and bit to set on S7 type Bool PLC has to set to 0 e.g. 55.1 for DB4DBX55.1
- set_Active_Reset: offset and bit to set off S7 type Bool PLC has to set to 0 e.g. 55.2 for DB4DBX55.2

Light Sensor as `PLC_LightSensor` or `PLC_LightSensor_DInt`

Illuminance sensor.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
AmbientLightLevel:
- DInt:
  - get_CurrentAmbientLightLevelDInt: (push support) offset to get current illumination in LUX S7 type DInt value limited to 0.0001 ~ 100,000 e.g. 55 for DB4DBD55
- Real:
  - get_CurrentAmbientLightLevel: (push support) offset to get current illumination in LUX S7 type Real value limited to 0.0001 ~ 100,000 e.g. 55 for DB4DBD55
get_StatusTampered: (optional) (push support) offset and bit for tamper detection S7 type Bool (e.g., 55.2 for DB4DBX55.2) (Home app shows this only within the options)
- false: ok
- true: tampered
get_StatusLowBattery: (optional) (push support) offset and bit for battery low detection S7 type Bool (e.g., 55.3 for DB4DBX55.3) (Home app does not inform with push notification)
- false: ok
- true: battery low

Air Purifier as `PLC_AirPurifier`

Air filter.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
Current State:
- default_CurrentAirPurifierState: (optional) defines an alternative value that's returned when get_CurrentAirPurifierState is not defined. Default value 0:inactive
- get_CurrentAirPurifierState: (optional) (push support) offset to get current heating/cooling state S7 type Byte e.g. 8 for DB4DBB8.
  - 0: inactive
  - 1: idle
  - 2: purifying air
- mapCurrentAirPurifierState: (optional) define mapping array for get_CurrentAirPurifierState. The PLC value is used as an index into the table. e.g. [0, 2] which maps the PLC value 0->1 1->2 when the PLC supports only two states with 0:inactive and 1:idle.
Target State:
- default_TargetAirPurifierState: (optional) defines an alternative value that's returned when get_TargetAirPurifierState is not defined. Default value 0:manual
  - 0: manual
  - 1: automatic
- get_TargetAirPurifierState: (optional) (push support) offset to get target heating/cooling state. S7 type Byte e.g. 9 for DB4DBB9. When not defined, fixed 1: automatic is used.
  - 0: manual
  - 1: automatic
- set_TargetAirPurifierState: (optional but required when get_TargetAirPurifierState is defined) (control support) offset to get target heating/cooling state. S7 type Byte e.g. 9 for DB4DBB9. When not defined, fixed 1: automatic is used.
  - 0: manual
  - 1: automatic
- mapTargetAirPurifierStateGet: (optional) define mapping array for get_TargetAirPurifierState. The PLC value is used as an index into the table. e.g. [1, 0] which maps the PLC value 0->1 1->0 when the PLC supports only two states with 0:automatic and 1:manual.
- mapTargetAirPurifierStateSet: (optional) define mapping array for set_TargetAirPurifierState. The home app value is used as an index into the table. e.g. [1, 0] which maps the PLC value 0->1 1->0 when the PLC supports only two states with 0:automatic and 1:manual.
Swing Mode:
- get_SwingMode: (optional) (push support) offset to get swing mode. S7 type Byte e.g. 8 for DB4DBB8.
  - 0: swing disabled
  - 1: swing enabled
- set_SwingMode: (optional) (control support) offset to set swing mode. S7 type Byte e.g. 9 for DB4DBB9.
  - 0: swing disabled
  - 1: swing enabled
Rotation Speed:
- Byte:
  - get_RotationSpeedByte: (optional) (push support) offset to get rotation speed state S7 type Byte e.g. 8 for DB4DBB8.
  - set_RotationSpeedByte: (optional but required when get_RotationSpeedByte is defined) (push support) offset to get set speed state. S7 type Byte e.g. 9 for DB4DBB9.
- Real:
  - get_RotationSpeed: (optional) (push support) offset to get rotation speed state S7 type Real e.g. 8 for DB4DBB8.
  - set_RotationSpeed: (optional but required when get_RotationSpeed is defined) (push support) offset to get set speed state. S7 type Real e.g. 9 for DB4DBB9.
get_Active: (push support) offset and bit to get the current status S7 type Bool e.g. 55.0 for DB4DBX55.0
Single Bit for on/off:
- set_Active: (control support) offset and bit to set on/off S7 type Bool e.g. 55.0 for DB4DBX55.0 (could be the same as get_Active)
Separate Bits for on/off:
- set_Active_Set: (control support) offset and bit to set on S7 type Bool PLC has to set to 0 e.g. 55.1 for DB4DBX55.1
- set_Active_Reset: offset and bit to set off S7 type Bool PLC has to set to 0 e.g. 55.2 for DB4DBX55.2
Filter change:
- get_FilterChangeIndication: (push support) offset and bit for filter change indication S7 type Bool e.g. 55.3 for DB4DBX55.3
  - 0: filter ok
  - true: change filter
- get_FilterLifeLevel: (optional) (push support) offset and bit for filter life level S7 type Byte e.g. 56 for DB4DBX56
  - 0: change filter
  - 100: filter is new
- set_ResetFilterIndication: (optional) (control support) offset and bit for filter change indication S7 type Bool PLC has to set to 0 after detecting change to true via homebridge e.g. 55.4 for DB4DBX55.4 NOTE: Currently not used by HomeApp

Filter Maintenance Indicator as `PLC_FilterMaintenance`

Filter change indication (Currently neither supported in HomeApp and HomeBridge).

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
Filter change:
- get_FilterChangeIndication: (push support) offset and bit for filter change indication S7 type Bool e.g. 55.3 for DB4DBX55.3
  - false: filter ok
  - true: change filter
- get_FilterLifeLevel: (optional) (push support) offset and bit for filter life level S7 type Byte e.g. 56 for DB4DBX56
  - 0: change filter
  - 100: filter is new
- set_ResetFilterIndication: (optional) (control support) offset and bit for filter change indication S7 type Bool PLC has to set to 0 after detecting change to true via homebridge e.g. 55.4 for DB4DBX55.4 NOTE: Currently not used by HomeApp

CO2 Sensor as `PLC_CarbonDioxideSensor`

Carbon Dioxide Sensor.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
Detected:
- get_CarbonDioxideDetected: (push support) offset and bit for CO2 detection S7 type Bool e.g. 55.3 for DB4DBX55.3
  - false: normal CO2 level
  - true: abnormal CO2 level
get_StatusTampered: (optional) (push support) offset and bit for tamper detection S7 type Bool (e.g., 55.2 for DB4DBX55.2) (Home app shows this only within the options)
- false: ok
- true: tampered
get_StatusLowBattery: (optional) (push support) offset and bit for battery low detection S7 type Bool (e.g., 55.3 for DB4DBX55.3) (Home app does not inform with push notification)
- false: ok
- true: battery low

CO Sensor as `PLC_CarbonMonoxideSensor`

Carbon Monoxide Sensor.

name: unique name of the accessory
manufacturer: (optional) description
db: S7 data base number e.g. 4 for DB4
enablePolling: (optional) when set to true, the current state will be polled. It is mandatory to enable polling mode on the platform level.
pollInterval: (optional) poll interval in seconds. Default value is defined in the platform definition.
Detected:
- get_CarbonMonoxideDetected: (push support) offset and bit for CO detection S7 type Bool e.g. 55.3 for DB4DBX55.3
  - false: normal CO level
  - true: abnormal CO level
get_StatusTampered: (optional) (push support) offset and bit for tamper detection S7 type Bool (e.g., 55.2 for DB4DBX55.2) (Home app shows this only within the options)
- false: ok
- true: tampered
get_StatusLowBattery: (optional) (push support) offset and bit for battery low detection S7 type Bool (e.g., 55.3 for DB4DBX55.3) (Home app does not inform with push notification)
- false: ok
- true: battery low

config.json Example

Note: The example is just an example. It contains also some optional settings. For testing purposes, all accessories are set to one DB.

{
  "bridge": {
    "name": "Homebridge DEMO",
    "username": "0E:54:47:36:82:26",
    "port": 52609,
    "pin": "031-55-155"
  },
  "accessories": [],
  "platforms": [
    {
      "name": "Config",
      "port": 8888,
      "platform": "config"
    },
    {
      "platform": "PLC",
      "ip": "10.10.10.32",
      "rack": 0,
      "slot": 2,
      "communicationOP": false,
      "enablePolling": true,
      "defaultPollInterval": 15,
      "distributePolling": true,
      "enablePush": true,
      "enableControl": true,
      "port": 8888,
      "accessories": [
        {
          "accessory": "PLC_LightBulb",
          "name": "LightBulb0",
          "manufacturer": "normal light bulb",
          "enablePolling": true,
          "db": 12,
          "get_On": 0.0,
          "set_On": 0.1,
          "set_Off": 0.2
        },
        {
          "accessory": "PLC_LightBulb",
          "name": "LightBulb1",
          "manufacturer": "with dim function",
          "enablePolling": true,
          "db": 12,
          "get_On": 2.0,
          "set_On": 2.1,
          "set_Off": 2.2,
          "get_Brightness": 1,
          "set_Brightness": 1
        },
        {
          "accessory": "PLC_LightBulb",
          "name": "LightBulb2",
          "manufacturer": "single bit for on/off",
          "enablePolling": true,
          "db": 12,
          "get_On": 2.3,
          "set_On": 2.3
        },
        {
          "accessory": "PLC_Outlet",
          "name": "Outlet",
          "enablePolling": true,
          "db": 12,
          "get_On": 2.4,
          "set_On": 2.5
        },
        {
          "accessory": "PLC_Switch",
          "name": "Switch",
          "enablePolling": true,
          "db": 12,
          "get_On": 2.6,
          "set_On": 2.7,
          "set_Off": 3.0
        },
        {
          "accessory": "PLC_TemperatureSensor",
          "name": "Temperature",
          "db": 12,
          "get_CurrentTemperature": 4,
          "enablePolling": true,
          "pollInterval": 60
        },
        {
          "accessory": "PLC_HumiditySensor",
          "name": "Humidity",
          "db": 12,
          "get_CurrentRelativeHumidity": 8,
          "enablePolling": true,
          "pollInterval": 120
        },
        {
          "accessory": "PLC_Thermostat",
          "name": "Thermostat",
          "manufacturer": "ground floor",
          "db": 12,
          "enablePolling": true,
          "get_CurrentTemperature": 12,
          "get_TargetTemperature": 16,
          "set_TargetTemperature": 16,
          "get_CurrentHeatingCoolingState": 20,
          "mapSetTargetHeatingCoolingState": [
              0,
              1,
              0,
              3
          ]
        },
        {
          "accessory": "PLC_WindowCovering",
          "name": "Blind",
          "manufacturer": "ground floor",
          "db": 12,
          "invertPosition": false,
          "adaptivePolling": true,
          "adaptivePollingInterval": 1,
          "enablePolling": true,
          "pollInterval": 180,
          "get_CurrentPosition": 21,
          "get_TargetPosition": 22,
          "set_TargetPosition": 1
        },
        {
          "accessory": "PLC_Window",
          "name": "Window",
          "manufacturer": "ground floor",
          "enablePolling": true,
          "pollInterval": 60,
          "db": 12,
          "get_CurrentPosition": 23,
          "mapGetCurrentPosition": [
              0,
              25,
              100
          ]
        },
        {
          "accessory": "PLC_Door",
          "name": "Door",
          "manufacturer": "ground floor",
          "enablePolling": true,
          "pollInterval": 10,
          "db": 12,
          "get_CurrentPosition": 24,
          "mapGetCurrentPosition": [
              0,
              100
          ]
        },
        {
          "accessory": "PLC_OccupancySensor",
          "name": "Presence",
          "enablePolling": true,
          "db": 12,
          "get_OccupancyDetected": 25.0
        },
        {
          "accessory": "PLC_MotionSensor",
          "name": "Motion",
          "enablePolling": true,
          "db": 12,
          "get_MotionDetected": 25.1
        },
        {
          "accessory": "PLC_ContactSensor",
          "name": "ContactSensor",
          "enablePolling": true,
          "pollInterval": 5,
          "db": 12,
          "get_ContactSensorState": 25.2
        },
        {
          "accessory": "PLC_LeakSensor",
          "name": "LeakSensor",
          "enablePolling": true,
          "pollInterval": 5,
          "db": 12,
          "get_LeakDetected": 25.3
        },
        {
          "accessory": "PLC_Faucet",
          "name": "Faucet",
          "enablePolling": true,
          "db": 12,
          "get_Active": 28.0,
          "set_Active": 28.0
        },
        {
          "accessory": "PLC_Valve",
          "name": "Valve",
          "db": 12,
          "enablePolling": true,
          "ValveType": 2,
          "get_Active": 28.1,
          "set_Active": 28.1,
          "get_SetDuration": 30,
          "set_SetDuration": 30,
          "get_RemainingDuration": 34
        },
        {
          "accessory": "PLC_SecuritySystem",
          "name": "SecuritySystem",
          "db": 12,
          "enablePolling": true,
          "pollInterval": 60,
          "get_SecuritySystemCurrentState": 26,
          "set_SecuritySystemTargetState": 27,
          "get_SecuritySystemTargetState": 27,
          "mapGetSecuritySystemCurrentState": [
              3,
              1,
              4
          ],
          "mapGetSecuritySystemTargetState": [
              3,
              1
          ],
          "mapSetSecuritySystemTargetState": [
              1,
              1,
              1,
              0
          ]
        },
        {
          "accessory": "PLC_StatelessProgrammableSwitch",
          "name": "Stateless Switch",
          "enablePolling": true,
          "pollInterval": 10,
          "db": 12,
          "isEvent": 29.2,
          "get_ProgrammableSwitchEvent": 38
        },
        {
          "accessory": "PLC_Doorbell",
          "name": "Doorbell",
          "enablePolling": true,
          "pollInterval": 10,
          "db": 12,
          "isEvent": 29.2,
          "get_ProgrammableSwitchEvent": 38
        },
        {
          "accessory": "PLC_LockMechanism",
          "name": "Lock",
          "db": 12,
          "enablePolling": true,
          "get_LockCurrentState": 39,
          "get_LockTargetState": 40,
          "set_LockTargetState": 40
        },
        {
          "accessory": "PLC_LockMechanismBool",
          "name": "LockBool",
          "db": 12,
          "enablePolling": true,
          "get_LockCurrentState": 41.0,
          "get_LockTargetState": 41.1,
          "set_LockTargetState": 41.1
        },
        {
          "accessory": "PLC_GarageDoorOpener",
          "name": "GarageDoor",
          "db": 12,
          "enablePolling": true,
          "get_ObstructionDetected": 41.2,
          "get_CurrentDoorState": 42,
          "get_TargetDoorState": 43,
          "set_TargetDoorState": 43
        },
        {
          "accessory": "PLC_SmokeSensor",
          "name": "SmokeSensor",
          "db": 12,
          "enablePolling": true,
          "get_SmokeDetected": 44.0,
          "get_StatusTampered": 44.1,
          "get_StatusLowBattery": 44.2
        },
        {
          "accessory": "PLC_Fan",
          "name": "Fan",
          "manufacturer": "Test",
          "db": 12,
          "set_Active": 44.3,
          "get_Active": 44.3,
          "get_RotationDirection": 45,
          "set_RotationDirection": 45,
          "get_RotationSpeed": 46,
          "set_RotationSpeed": 46,
          "get_CurrentFanState": 47,
          "get_TargetFanState": 48,
          "set_TargetFanState": 48,
          "enablePolling": true
        },
        {
            "accessory": "PLC_LightSensor",
            "name": "LightSensor",
            "db": 12,
            "enablePolling": true,
            "get_CurrentAmbientLightLevel": 50,
            "pollInterval": 180
        }
      ]
    }
  ]
}

Update of accessory values

The current values of the accessories are only updated in the following cases:

Apple Home App:
- App is closed and opened
- Switch between rooms is done
Homebridge Devices page is opened

The home app does not regularly poll for updates of values. Only when switching rooms or closing/opening the app, the actual values are requested. This behavior is even the case when an AppleTV or HomePod is configured as a control center.

There are three possible ways to handle this:

That's ok for you
You enable the polling mode
You enable the push mode and instrument your PLC code to send the values

Poll values from PLC by homebridge-PLC plugin

To enable this, you have to set "enablePolling": true; at the platform level and on each individual accessory with an individual interval in seconds "enablePolling": true, "pollInterval": 10,

Example to poll the contact sensor state every 10 seconds:

{
  "platforms": [
      {
      "platform": "PLC",
      "ip": "10.10.10.32",
      "rack": 0,
      "slot": 2,
      "enablePolling": true,
      "accessories": [
        {
          "accessory": "PLC_ContactSensor",
          "name": "ContactSensor",
          "enablePolling": true,
          "pollInterval": 10,
          "db": 12,
          "get_ContactSensorState": 25.2
        }
      ]
    }
  ]
}

Push values from PLC to homebridge-plc plugin

It is possible to send updates of values directly from the PLC to the homebridge-plc plugin. This is especially useful when you want notifications from your home app about open/close of doors or just a faster response e.g. with PLC_StatelessProgrammableSwitch. To enable this, you have to set "enablePush": true, at the platform level and optionally the port.

The push takes place via an HTTP request to the configured port with the keyword "push". In order to avoid additional configurations to be shared between the PLC and the homebridge-plc-Plugin, the interface is kept very simple. The interface that the PLC has to use consists only of the keyword 'push', the database number 'db', the address within the db 'offset' and the value 'value'. This allows the PLC to create a simple interface to push changed values to the homebridge-plc plugin e.g. I created a FC with just one input of type ANY to push all kinds of values.

The value is assigned to all matching ('db' and 'offset') get_* accessory configurations. All information is transmitted within the URL and in decimal. Parameters that support push are marked with [push] in the description.

It's also possible to forward all push requests where no matching accessory matches the db configuration to another instance of homebridge-plc. See parameter forward.

For example, the push from the PLC is done as 'http://homebridgeIp:8888/?push&db=1014&offset=1&value=3' With the following configuration:

{
  "platforms": [
      {
      "platform": "PLC",
      "ip": "10.10.10.32",
      "rack": 0,
      "slot": 2,
      "enablePush": true,
      "accessories": [
        {
            "accessory": "PLC_SecuritySystem",
            "name": "AlarmSystem",
            "db": 1014,
            "get_SecuritySystemCurrentState": 1,
            "set_SecuritySystemTargetState": 1,
            "get_SecuritySystemTargetState": 1
        }
      ]
    }
  ]
}

The value '3' (disarmed) will be used for both 'get_SecuritySystemCurrentState' as well as 'get_SecuritySystemTargetState'.

The request has to be done as an HTTP PUT or GET operation. There will be no logging when doing a PUT operation while there will be detailed output when doing a GET operation. This is especially intended for testing with the browser as the browser performs a GET operation per default.

Format

Example for float values when triggered from the browser:

http://homebridgeIp:8888/?push&db=3&offset=22&value=12.5

Example for bool values when triggered from the browser:

http://homebridgeIp:8888/?push&db=5&offset=5.1&value=1

Example for byte values when triggered from the browser:

http://homebridgeIp:8888/?push&db=2&offset=3&value=255

NOTE: Chrome/Edge does at minimum two requests with different parameters resulting in some error messages. I recommend Talend API Tester - Free Edition

Control of PLC accessories

It is also possible to control PLC accessories via HTTP PUT or GET operation. This might be useful for integration into other automation systems. To enable this, you have to set "enableControl": true, at the platform level and optionally the port.

NOTE: It is currently not possible to query the current state

The interface that the PLC operates consists only of the keyword 'control', the database number 'db', the address within the db 'offset' and the value 'value'. The value is assigned to the matching ('db' and 'offset') set_* accessory configurations. All configurations that are supported are marked with (control support) in the description.

For accessories with separate on/off configurations e.g. PLC_LightBulb set_On/set_Off the set_On or PLC_LockMechanismBool set_Secured/set_Unsecured the set_Secured has to be used. With 1 for on and 0 for off.

All information is transmitted within the URL and in decimal.

It's also possible to forward all control requests where no matching accessory matches the db configuration to another instance of homebridge-plc. See parameter forward.

**NOTE: Options like invert*, mapGet* and mapSet* are not affecting the control interface. In example for PLC_Window, the value is 0: closed and 100: open regardless if invertPosition is set or not.

The request has to be done as an HTTP PUT or GET operation. There will be no logging when doing a PUT operation while there will be detailed output when doing a GET operation. This is especially intended for testing with the browser as the browser performs a GET operation per default.

Format

Example to switch a light bulb from the browser. Let's say the light bulb has the following config:

"platforms": [ { "platform": "PLC", "ip": "10.10.10.32", "rack": 0, "slot": 2, "enableControl": true, "accessories": [ { "accessory": "PLC_LightBulb", "name": "Light", "db": 6096, "set_On": 1.1, "set_Off": 1.0, "get_On": 0.0 } ] } ]

Use this to switch the light bulb on from the browser:

http://homebridgeIp:8888/?control&db=6096&offset=1.1&value=1

Use this to switch the light bulb off from the browser:

http://homebridgeIp:8888/?control&db=6096&offset=1.1&value=0

NOTE: Chrome/Edge does at minimum two requests with different parameters resulting in some error messages. I recommend Talend API Tester - Free Edition

Test & Release

Local test

The easiest way is to open the terminal from Homebridge, delete the index.js file of this plugin, open nano, and paste in the new content. Afterward, Homebridge can be restarted. The delete and open of the index.js file can be done by the following command line.

rm node_modules/homebridge-plc/index.js && nano node_modules/homebridge-plc/index.js

Publish npm package

npm publish --access public

Name		Name	Last commit message	Last commit date
Latest commit History 103 Commits
.github/workflows		.github/workflows
doc		doc
CHANGELOG.md		CHANGELOG.md
LICENSE		LICENSE
README.md		README.md
config.schema.json		config.schema.json
index.js		index.js
package.json		package.json

License

Feilner/homebridge-plc

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homebridge-plc

SIEMENS S7 PLC plugin for Homebridge

Installation

Homebridge configuration

Platform

Accessories

LightBulb as PLC_LightBulb

Outlet as PLC_Outlet

Switch as PLC_Switch

Temperature Sensor as PLC_TemperatureSensor

Humidity Sensor as PLC_HumiditySensor

Thermostat as PLC_Thermostat

Humidifier/Dehumidifier as PLC_HumidifierDehumidifier

Shutters as PLC_WindowCovering, windows as PLC_Window, and doors as PLC_Door

Occupancy Sensor as PLC_OccupancySensor

Motion Sensor as PLC_MotionSensor

Contact Sensor as PLC_ContactSensor

Leak Sensor as PLC_LeakSensor

Faucet as PLC_Faucet

Valve as PLC_Valve

Security System as PLC_SecuritySystem

Button as PLC_StatelessProgrammableSwitch, Doorbell as PLC_Doorbell

Lock mechanism as PLC_LockMechanism

Boolean lock mechanism as PLC_LockMechanismBool

Garage door as PLC_GarageDoorOpener

Smoke Sensor as PLC_SmokeSensor

Fan as PLC_Fan

Light Sensor as PLC_LightSensor or PLC_LightSensor_DInt

Air Purifier as PLC_AirPurifier

Filter Maintenance Indicator as PLC_FilterMaintenance

CO2 Sensor as PLC_CarbonDioxideSensor

CO Sensor as PLC_CarbonMonoxideSensor

config.json Example

Update of accessory values

Poll values from PLC by homebridge-PLC plugin

Push values from PLC to homebridge-plc plugin

Format

Control of PLC accessories

Format

Test & Release

Local test

Publish npm package

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LightBulb as `PLC_LightBulb`

Outlet as `PLC_Outlet`

Switch as `PLC_Switch`

Temperature Sensor as `PLC_TemperatureSensor`

Humidity Sensor as `PLC_HumiditySensor`

Thermostat as `PLC_Thermostat`

Humidifier/Dehumidifier as `PLC_HumidifierDehumidifier`

Shutters as `PLC_WindowCovering`, windows as `PLC_Window`, and doors as `PLC_Door`

Occupancy Sensor as `PLC_OccupancySensor`

Motion Sensor as `PLC_MotionSensor`

Contact Sensor as `PLC_ContactSensor`

Leak Sensor as `PLC_LeakSensor`

Faucet as `PLC_Faucet`

Valve as `PLC_Valve`

Security System as `PLC_SecuritySystem`

Button as `PLC_StatelessProgrammableSwitch`, Doorbell as `PLC_Doorbell`

Lock mechanism as `PLC_LockMechanism`

Boolean lock mechanism as `PLC_LockMechanismBool`

Garage door as `PLC_GarageDoorOpener`

Smoke Sensor as `PLC_SmokeSensor`

Fan as `PLC_Fan`

Light Sensor as `PLC_LightSensor` or `PLC_LightSensor_DInt`

Air Purifier as `PLC_AirPurifier`

Filter Maintenance Indicator as `PLC_FilterMaintenance`

CO2 Sensor as `PLC_CarbonDioxideSensor`

CO Sensor as `PLC_CarbonMonoxideSensor`