I have already successfully connected the Idec PLC (FC6A) to the SMA inverter Sunny Tripower (STP 25TL). I have also connected the Open ModScan and Modbus Poll to the SMA inverter, both work perfectly. But PLC S7-1200 does not work. It occurs with the 8384 error code.

I referenced many ways to fix that error from this forum topic, but nothing worked.

Today is the year 2025. Has anybody been successful? Can you help me, pls?

Topic closed because the question has been asked multiple times. The active topic can be found here:

How to S7-1200 connect SMA inverter via Modbus TCP/IP

Kind regards, Moderator_Lan