Hello everybody.

Finally, I set correctly hw configurations for master and slave devices. No more red lights on plc after download configurations in master and slave cpu's.
Machine which I need to program is connected to slave device.

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Best regards.

New question published by Gujaa is split to a separate thread with the subject How can command from code in ladder diagram in FC block send/download to slave and control machine?.

Best regards
Jen_Moderator