1. |
Check the communication settings of the GP and the device/PLC. If they are not matched, change the communication settings to match them.
|
2. |
Rewire if there is a problem in the communication cable wiring or a loose connection. For details of cable diagrams between a GP unit and a device/PLC, please refer to the GP-Pro EX Device/PLC Connection Manual. |
3. |
Change the type of the device/PLC to the one currently connected.
|
4. |
Check the address range of the device/PLC in use. Addresses out of the range may be set. |