A project with PLC „AXC F 2152“ and serial module „AXL F RS UNI 1H“ has FC3 and FC4 functions. Library version is Modbus RTU 10. The „wDiagCode“ output for the functions is „16#C416“ which means „Timeout between FC and Modbus_Master“.
I have no clue how to solve this issue. Could anyone give a help?
Thanks