Item Trouble state
Solution
changed value of byte 0 to trigger the output command, when
output data can not send to modbus device in output data area
of Profibus master (please refer section 4.6.2 Output data area
and communication command).
GW-7552-B / GW-7552-M PROFIBUS/MODBUS GATEWAY User Manual (Version 1.60, May/2017) PAGE: 68