AC800M Module missing error , connected on electrical bus
Why do I get frequently "Module Missing" error in some I/O-modules such as di801/do801/ai801, the CPU is PM851? System installed for Water treatment application. My configuration is Pm851 with 3di801,2do801and ai801. Hmi were connected in serial port, proface hmi.
Answers
Is that recently you have changed PM module if so then check the firmware version and update the same.
Controller log?
Hi,
Check firmware version of your Communication Interface Module.
We have faced same issues in CI840s with firmware version 4.2/1.
upgraded same to 4.3/2.
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