Hello!
I am using PLC TM221CE16R and SoMachine Basic v1.6. My PLC has firmware 1.6.0.1. I use analog expansion bus, input module TM3AI8. Everything was working fine for 2 hours until suddenly I got next message in SoMachine Basic: I/O expansion configured but is absent or inoperative. I/O expansion bus is not started.
Since then ERR LED is always blinking. I already tried deleting program, updating firmware, removing expansion module in configuration page, removing/adding physical module, selected module as Optional, removing battery - nothing helped. If I try removing application, ERR LED is still blinking. Seems like I can't delete previous program, something like config file is burned into PLC.
On the other hand: if I write some simple program, PLC works fine. It turns on/off relays correctly. Just expansion bus is not working. It is not working even if it's not configured or attached physically to PLC.
Can anybody please help me? It is really frustrating.
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