Hi, there.

I have a similar problem by reading/writing coils from Scada Data gateway and a S7 1200. We was able to read/write holding registers; however, Scada data gateway can not translate an HR in a Coil. So, we have to work directly with coils.

Please, send us some related example

Thanks

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Split from How to read Inputs, Holding Registers and write Coils to a Modbus TCP Slave device.

Closed cause question posted twice.

The second thread with the subject Modbus TCP Problem in writing/reading coils from/to S7 1200 to/from Scada Data Gateway is published within the conference SIMATIC Modbus/TCP.