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RELEASE_NOTES
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==============================================================
(Unreleased) Apache PLC4X 0.8.0-SNAPSHOT
==============================================================
This is an ordinary PLC4X release, containing changes that
accumulated over time. It doesn't have an explicit focus on
a particular topic.
New Features
------------
- The KNXnet/IP Driver now supports writing of values.
- The Modbus driver now supports more common notations of
Modbus addresses using a pure-numeric notation.
- Especially the Modbus driver has been enhanced to read
more complex types such as REAL, DINT, ... not just BOOL
and INT
Incompatible changes
--------------------
- The syntax of the S7 addresses changed slightly allowing to
provide a string length. Without this, a STRING datatype will
read 254 characters, by adding the size in round brackets to
the type name will use the specified number.
Examples:
Read one String which is max 10 chars long:
%DB2:30:STRING(10)
Read an array of 3 Strings where each is max 10 chars long:
%DB2:30:STRING(10)[3]
- The PLCValue types have been refactored to align with the types
defined in IEC 61131-3 (https://en.wikipedia.org/wiki/IEC_61131-3)
directly using the older Java types (PlcBoolean) is no longer
possible.
Bug Fixes
---------
PLC4X-132 [S7] Communication to S7 PLC dies in some situations
PLC4X-206 When writing short values exceptions are thrown
while preparing the write request.
PLC4X-207 No registered handler found for message TPKTPacket[],
using default decode method - Communication with S7
and Modbus device hangs
PLC4X-209 [S7] When writing INT and DINT values the Write
operation fails with an internal error
PLC4X-210 [KNX] When running a KNX Tunneling Subscription
for a longer time there are packets that kill
the connection
PLC4X-211 PlcValues seem to always return "true" on the
isXYZ" checks.
PLC4X-212 When writing multiple values in one request the
item status is not correctly set
PLC4X-213 [Modbus] The Modbus driver doesn't handle error
responses gracefully
PLC4X-214 [Modbus] Holding register addresses have an offset
of 1 (Not reading the correct address)
PLC4X-215 Drivers using the BaseOptimizer
(SingleFieldOptimizer) don't handle error responses
gracefully
PLC4X-218 [Scraper] After stopping the scraper still the
statistics are logged and the application doesn't
terminate
PLC4X-239 Read DTL (Date and Time)
PLC4X-240 Protocol error in reading string
PLC4X-245 [Modbus] Apache NiFi processor throws
java.io.IOException after a while
==============================================================
Apache PLC4X 0.7.0
==============================================================
This version is the first after a major refactoring of the driver
core. All previous driver versions are now considered deprecated
and have been replaced by versions using the new driver structure
and generated driver codebase.
New Features
------------
- Drivers now support structured types using PlcValues
- The EIP (EtherNet/IP) driver no longer requires an external
library and is implemented fully in the PLC4X project
- The Modbus driver no longer requires an external library
and is implemented fully in the PLC4X project
- The new S7 Driver supports writing multiple entries in one
request (The API allowed this from the beginning now not
every item is wrapped in a single request. It should bring
significant performance gains when writing multiple vlaues)
- S7 Driver now supports String datatypes.
- OSGi : Implementation of Drivers/Transports as OSGi services
to be able to use them in an OSGi container.
- New Firmata protocol driver
Incompatible changes
--------------------
- Due to the refactoring of the driver core there might be issues
running drivers built against older core versions.
- This version doesn't provide a Beckhoff AMS/ADS driver as this
driver is still being ported to the new mspec format.
- All drivers connection strings now follow the same pattern:
{protocol-code:(transport-code:)?//{transport-config}(?{params})?
Please check the drivers documentation on our website:
https://plc4x.apache.org/users/protocols/s7.html
- The karaf-feature modules are removed as the drivers now all
provide both a feature.xml as well as a `kar` bundled archive
Bug Fixes
---------
PLC4X-174 UDP Transport does not accept ports containing 0
PLC4X-134 S7 is terminating the connection during handshake
PLC4X-192 Support for conversion of complex connection string
parameters
==============================================================
Apache PLC4X 0.6.0
==============================================================
This is the last release of PLC4X with the "handwritten" drivers.
This Minor release will thus receive updates and fixes until
most users have switched to 0.7 and above (with generated drivers).
If you are using the S7 Driver you should update to this Version
as the critical (memory leak) bug PLC4X-163 is fixed.
New Features
------------
- PLC4X-168 A shorter S7 Field Syntax is Introduced.
This release contains no further features and mostly stabilization.
Incompatible changes
--------------------
- Moved the C++, C# and Python drivers into the `sandbox`
Bug Fixes
---------
- Fixed Promise Chain for InternalPlcWriteRequest
- PLC4X-45 Add float support to Modbus Protocol
- PLC4X-164 Fix wrong NOT FOUND exception in OPC UA Driver
- PLC4X-166 Fixed Download Page
- PLC4X-163 Fixed Netty ByteBuf Leaks for S7 Driver
- PLC4X-158 Added Warning if no Pooled Driver is used for Scraper
==============================================================
Apache PLC4X 0.5.0
==============================================================
This is the first release containing our new generated drivers (AB-ETH)
New Features
------------
- Implemented a new Apache Kafka Connect integration module
- Implemented a new Apache NiFi integration module
- Implemented a new Logstash integration module
- Implemented a driver for the AB-ETH protocol
- Implemented Apache Karaf features for S7 OSGI drivers
- PLC4X-121 Develop Code Generation to allow Generated Drivers in multiple Languages
Sandbox (Beta-Features)
- Implemented a new BACnet/IP passive mode driver
- Implemented a new Serial DF1 driver
Incompatible changes
--------------------
Bug Fixes
---------
- PLC4X-104 S7 Driver Datatype TIME_OF_DAY causes ArrayOutOfBoundException
- PLC4X-134 S7 is terminating the connection during handshake
- PLC4X-139 PLC4X leaks sockets in case of connection problems
- PLC4X-141 String with real length of greater 127 throw an exception
- PLC4X-144 When requesting invalid addresses, the DefaultS7MessageProcessor produces errors
==============================================================
Apache PLC4X 0.4.0
==============================================================
This is the first release of Apache PLC4X as top-level project.
New Features
------------
- The PlcConnection now supports a `ping` method to allow checking if an existing connection is still alive.
- Support of the OPC-UA protocol with the `opc-ua-driver`.
- Other Languages Support:
-- Added first versions of a C# .Net PLC4X API (`plc4net`)
-- Added first versions of a Python PLC4X API (`plc4py`)
- Added an Interop server which allows to relay requests from other languages to a Java Server
Incompatible changes
--------------------
- ElasticSearch example was updated to use ElasticSearch 7.0.1, this might cause problems with older Kibana versions.
Bug Fixes
---------
==============================================================
Apache PLC4X (incubating) 0.3.1
==============================================================
This is a bugfix-release, that fixes some problems with S7 driver.
Bug Fixes
---------
- The S7 driver didn't correctly handle "fill-bytes" in multi-item read-responses and multi-item write-requests
- PLC4X-83: fixed NPE when reading odd-length array of one-byte base types
- PLC4X-82: renamed flags "F" to Siemens Standard "M" (Marker)
- PLC4X-84: Fixed a bug in the DefaultS7MessageProcessor which didn't correctly merge together split up items
==============================================================
Apache PLC4X (incubating) 0.3.0
==============================================================
This is the third official release of Apache PLC4X.
Some new features have been added (e.g. plc-scraper) multiple
new integrations are included (apache-karaf, apache-calcite)
and a lot of (technical) refactoring has been done to prepare
future work on adapters in different languages.
New Features
------------
- Object PLC Mapping (OPM) now has a Alias Registry to allow
variable substitution at runtime and write support
- New module `plc-scraper` for applications that have to
scrape a lot of sps fields with high frequency
- New integration `apache-karaf` to enable plc4j in a karaf
runtime environment
Incompatible changes
--------------------
- The 'plc4j-core' module has been merged into 'plc4j-api'.
So there is no 'plc4j-core' module anymore. Just remove that
dependency.
- The driver artifact names have changed so if you were using
a `plc4j-protocol-{name}` you now need to change this to
`plc4j-driver-{name}`
Bug Fixes
---------
PLC4X-75 Fixing dependency to the wrap url-handler
PLC4X-76 When receiving responses with more than 512 byte,
the IsoOnTcp protocol doesn't work
PLC4X-77 When the last item in a request is a DINT, the
DefaultS7MessageProcessor dies
PLC4X-78 Write operations seem to fail
- Fixed a Bug where S7 was not able to read arrays.
==============================================================
Apache PLC4X (incubating) 0.2.0
==============================================================
This is the second official release of Apache PLC4X.
Especially have we addressed all issues reported during
our first release, that were of non-technical nature.
These were tracked in:
PLC4X-60 Fix findings by the last release
New Features
------------
A new connection-pool was added, which allows automatic
pooling and reuse of PLC connections.
A new OPM module was added, which allows JPA like read-
communication using POJOs, very similar to JPA.
A stub of a new driver for the Emerson DeltaV protocol
has been added, but is not yet a fully functional PLC4X
driver. This is also a first test of our new `passive-
mode-driver` concept.
Incompatible changes
--------------------
We have refactored the API in order to eliminate the
need of passing `x-requests` to `x-methods` and added
an `execute` method to each request type. This greatly
simplifies the client code. However this requires
refactoring of applications using the direct PLC4X API.
Miscellaneous changes
---------------------
We have increased the test coverage greatly and fixed
a lot of little errors we found on the way.
Known Issues
------------
Bug Fixes
---------
PLC4X-56 [S7] S7Field does not recognize addresses
with numElements present
PLC4X-57 [S7] Response for address with numElements
contains only first item
PLC4X-61 Installation fails plc4j-protocoll-ethernetip
needs license
PLC4X-62 Modbus results deliver null-Value due to missing
implementation of getShort, getLong ...
==============================================================
Apache PLC4X (incubating) 0.1.0
==============================================================
This is the first official release of Apache PLC4X.
It contains drivers for the following protocols:
- Siemens S7comm (0x32)
- Beckhoff ADS
- Modbus
- EtherNet/IP
However the Siemens driver definitely is the most
mature driver, the rest should be treated experimental.
New Features
------------
PLC4X-29 [S7] Implement PDU Fragmentation
PLC4X-39 Extend the Edgent integration with the new Subscription features of PLC4X
Incompatible changes
--------------------
- NONE -
Miscellaneous changes
---------------------
- NONE -
Known Issues
------------
- NONE -
Most drivers should be treated experimental and are not near production ready.
The S7 driver is probably the furthest implemented and tested driver and hereby can be
considered to be the most mature.
Bug Fixes
---------
PLC4X-20 Jacoco doesn't seem to be working at all
PLC4X-21 Code coverage doesn't seem to work
PLC4X-47 S7 driver silently ignores surplus ReadRequestItems
PLC4X-48 S7 driver failes to parse response with multiple items