Modicon M221 - TM3 bus doesn’t work with TM3DM24R or TM3XTYS4 SV 2.0

• Problem description:

• Results:

- The TM3 expansion bus communication is not operationnal, the IO ERR Led is fixed red.
- The system word %SW118 is different than 16#FFFF (bit 13 or bit 14 is set to 0).

=> This issue is fixed by the M221 firmware version v1.10.1.3 attached to this FAQ.

• How to update M221 with .mfw file:

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