Hello. Im using a CP 341 with a CPU314 to comunicate by Modbus RTU. I conected PLC to my computer to check that the data was been sent to the slave (I used a Modbus Slave program on my computer) . I checked the message that I was sending on the slave and its ok,I also see that the slave is sending me the data,my CP is blinking correctly first TX and after RX but Im not getting the data on my DB. Im using P_RCV_RK function. 

Best regards.

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Split from CP 341 transmitting but data not received on Hyperterminal.

Closed cause question posted twice.

The second thread with the subject FB640 and FB641 in S7-314: When loading the block PLC turns to stop is published within the conference Communication / Networks.

Best regards,