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.
Asked 2 years ago
Answers
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Is that recently you have changed PM module if so then check the firmware version and update the same.
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Controller log?
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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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Hi Controller log file for your review
Answered 2 years ago
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