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 FAQ
 RHAA068(Node Name): Response timed out for device read command

Error Details
The error message [RHAA068(Node Name): Response timed out for device read command] appeared on the GP3000 screen.

Causes
1. The communication settings of the GP unit and those of the device/PLC are not matched.
2. Wiring has problems such as a wrong wire connection or a loose connection.
3. Selection of Device/PLC is wrong.
4. The power of Device/PLC is not ON, or it is reset.

Actions
1. Check if the communication settings of the GP unit and those of the device/PLC are matched. For setting examples, refer to the GP-Pro EX Device/PLC Connection Manual.
→ Communication Settings in GP-Pro EX
2.

Check the wiring, cable connection, and connecter's insertion. For details of cable diagrams between a GP unit and a device/PLC, please refer to the GP-Pro EX Device/PLC Connection Manual.
For use of the COM2 port, check if the Online Adapter (CA4-ADPONL-01) is connected.
3. Check the type of the device/PLC to be connected to the GP unit in GP-Pro EX.
→ How to change the type of Device/PLC in GP-Pro EX

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