Mitsubishi GOT1000 Series Connection Manual page 662

2 Perform an I/O check.
Whether the PLC can communicate with the GOT or not can be checked by the I/O check function.
If this check ends successfully, it means correct communication interface settings and proper cable
connection.
Display the I/O check screen by [Main Menu]
For details on the I/O check, refer to the following manual:
3 Confirming the PLC side setting
When connecting the GOT, setting is required for the PLC side.
Confirm if the PLC side setting is correct.
All settings related to communications are complete now.
Create screens on GT Designer2 and download the project data again.
17.4 PLC Side Setting
17 - 22
17.4 PLC Side Setting
17.3.7 Checking for normal monitoring
GT User's Manual
Section 17.4 PLC Side Setting
[Debug & self check]
1 Touch [CPU] on the I/O check screen.
Touching [CPU] executes the
communication check with the
connected PLC.
2 When the communication screen
ends successfully, the screen on the
left is displayed.
[Self check] [I/O check].