Mas01
Member
Thanks for your help, appreciate it.intelligent modules must ALWAYS be defined before they are fitted to the backplane, otherwise the CPU will drop into ERR (as you previously seen) with a "PAR ERROR".
Modify the parameter file to reflect the new IO setup, then add the card.
Obviously be aware that the CPU will need to stop, so ensure the plant is safe to turn off for a little while.
Once downloaded the errors should clear with a reset and you should get the RUN light back on.
Normally each slot has 16 bits reserved by default, so in your case this is fine (leave XY assignment as is).
Here's the module I intend to replace, highlighted:
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