Mitsubishi GOT1000 Series Connection Manual page 816

3 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:
All settings related to communications are complete now.
Create screens on GT Designer2 and download the project data again.
19 - 86
19.6 Preparatory Procedures for Monitoring
19.6.7 Checking for normal monitoring
GT User's Manual
[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].