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Thanks for the quick response, It worked I made the change on the client: uint16_t trans = mb.readHreg(remote, REG, &res); Serial.print("Receive:");Serial.println(res); while (mb.isTransaction(trans)) { // Check if transaction is active...

It looks like I'm suffering the same thing here, only now I'm using a TCP simens s71200 client(Write) and ESP32 server(Read) I am doing TPC communication between a PLC and...