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I designed a network to connect PLC S7-200 with four RTK Series 725 Annunciators via RTU Modbus. But I can't communicate between them. Baud rate, parity, RTU are same for all node of the network.
I configured PLC is master, 4 P725 are Slaves. I used function MBUS_CTRL and MBUS_MSG on PLC.
The Error code when PLC Running is 3 (Mean: Receive timeout: There was no response from the slave within the Timeout time. Some possible causes are bad electrical connection to the slave device, master and slave are set to a different baud rate/parity setting, and incorrect slave address)
Anyone has ever done with these instruments, please support me
Thank you very much.
I configured PLC is master, 4 P725 are Slaves. I used function MBUS_CTRL and MBUS_MSG on PLC.
The Error code when PLC Running is 3 (Mean: Receive timeout: There was no response from the slave within the Timeout time. Some possible causes are bad electrical connection to the slave device, master and slave are set to a different baud rate/parity setting, and incorrect slave address)
Anyone has ever done with these instruments, please support me
Thank you very much.