Troubleshooting
11-2
11.2 Check using input/output data
For Modbus/TCP and SLMP, errors can be checked using input/output data.
(1) Check
error
flags
Error flag information is stored in Modbus address 30165.
P7-3
(2) Check error ID number information, alarm ID number information
Error ID numbers are stored in the error ID number information storage area (input offset byte address
2).
Alarm ID numbers are stored in the alarm ID number information storage area (input offset byte
address 3).
Remove any problems until the error number or alarm number becomes "0."
P7-3
(3) Check error occurrence ID information
Error occurrence ID information is stored in the latest error occurrence ID information storage area
(input offset byte addresses 6, 7).
P7-3 to P7-4
(4) Check status detail information (slave unit)
If the occurring error is a slave unit status error, status details (the associated Modbus address) of the
target ID can be checked by specifying the target ID and turning on the slave access request
command.
P7-10 to P7-11
