MERLIN: IOC & OPI for Fermi Chopper condition monitoring system

[davidkeymer]

As a chopper technician or instrument scientist, I would like to be able to remotely monitor and log environmental conditions associated with the Fermi Chopper.

This chopper is (will be) a newly installed system of a new design, and so logging of condition monitoring data will be important to have in place from the beginning of the commissioning stage.

Acceptance Criteria

• An IOC exists for communication with the condition monitoring system
• Logging is configured for important values
• An OPI is produced to display required data #7846

Extra Information

• The system uses PR Electronics 4500 modules, specifically the 4116 universal transmitter fitted with 4511 communication enablers
• There are four single-channel units daisy-chained together
• Each measures a single temperature e.g. chopper pit, cooling water, chopper body and spare.
• The system uses MODBUS RTU for communication
• Manuals for the devices are in the shared network directory
• More information can be obtained from TC of Controls Group
• It may be possible to test using the unit from MERLIN before it is required
• Ticket for supporting the chopper controller itself

[danielmaclaren]

Links to the pull requests:

• Ticket7820 add ioc pre4500 EPICS-Pre4500#1
• https://github.com/ISISComputingGroup/EPICS/pull/335
• Ticket7820 add ioc pre4500 ibex_gui#1592
• Ticket7820 add ioc pre4500 EPICS-ioc#805

[rerpha]

release notes #7981