bluesky/ophyd

Recommended simulation EPICS IOC to test EpicsMotor

Opened this issue · 4 comments

mguijarr commented

What is the recommended simulation IOC to test EpicsMotor in Ophyd ?

I mean, to have a realistic behaviour, with real timings etc ?

I just gave a try to https://github.com/epics-motor/motorMotorSim . It does not seem to be very compatible,
since I have errors like:

epics> CA.Client.Exception...............................................
    Warning: "User specified timeout on IO operation expired"
    Context: "ca_search_and_connect"
    Source File: ../motorUtil.cc line 210
    Current Time: Wed Sep 18 2024 11:39:45.496673122
..................................................................
motorUtil.cc: getChID(IOC:moving.VAL) error: 80
CA.Client.Exception...............................................
    Warning: "User specified timeout on IO operation expired"
    Context: "ca_search_and_connect"
    Source File: ../motorUtil.cc line 210
    Current Time: Wed Sep 18 2024 11:40:45.496969230
..................................................................
motorUtil.cc: getChID(IOC:alldone.VAL) error: 80
CA.Client.Exception...............................................
    Warning: "User specified timeout on IO operation expired"
    Context: "ca_search_and_connect"
    Source File: ../motorUtil.cc line 210
    Current Time: Wed Sep 18 2024 11:41:45.497185065
..................................................................
motorUtil.cc: getChID(IOC:movingDiff.VAL) error: 80
Failed to connect to IOC:moving or IOC:alldone or IOC:movingDiff.
Check prefix matches Db

On the client side, asking for .position blocks forever (for example).

coretl commented

I would suggest using https://github.com/epics-containers/ioc-motorsim

Docs on how to run it are part of the framework tutorials: https://epics-containers.github.io/main/tutorials.html

coretl commented

Although I don't know if the alldone and moving PVs are present in the demo. It might need motorUtil.db loading...

mguijarr commented

Thanks for the help @coretl 👍🏻

I will check this asap

jwlodek commented

The linked motorSim should work, I've used it to test ophyd devices in the past, I think you might just be missing motorUtil.db as mentioned above.