Pro-face RHAA070: Cable disconnected or target powered off

Pro-face HMI Critical Communication

Model: GP4000/SP5000 Series | Code: RHAA070

Applicable Systems
GP4000 Series

Symptoms

  • GP-Pro EX display unit shows error RHAA070: Cable disconnected or target powered off.

Possible Causes

  • The command could not be sent because the device/PLC power is OFF or the cable is unplugged.

Troubleshooting Steps

  1. Step 1: Check that device/PLC power is ON; check cable wiring and connections; verify Display Type settings match the model in use.
    Communication restored and error cleared

How to Reset

Repower or reset the display unit after correcting the root cause.

Related Pro-face Fault Codes

Source: Pro-face GP-Pro EX Maintenance/Troubleshooting Manual, T.7.1 Common Display errors (proface.tech/otasuke official)

Category: HMI