This article is for robots running PolyScope X. If your robot runs PolyScope 5, see Troubleshooting C203A0 Safety Settings Mismatch (PolyScope 5).
If fault C203A0 appears after a Beacon URCap install or update, this is expected — this article will fix it.
What You'll See
Fault code
C203A0on the teach pendantThe robot arm in fault state — programs won't run
Fix the Fault
Before you apply the safety configuration, make sure the correct Beacon program for your application is loaded on the teach pendant. The safety settings applied in these steps are tied to the currently loaded program — applying them with the wrong program loaded will not clear the fault.
If your robot runs welding, see Setting the Correct Startup Program for Beacon Welding. For other applications (painting, cutting, etc.) the steps are the same but select your application's program instead of welding_program.
The whole fix happens on the Safety screen. Unlock it with the safety password, apply the new settings, then reload.
Tap OK to dismiss the fault.
Tap Application. Then tap Safety.
Tap Unlock.
If prompted, enter the safety password (
ursafe). Tap Confirm.
Tap Apply.
Tap Apply and restart. This reloads the application. The robot keeps running.
Tap Confirm Configuration.
Tap the menu icon in the top-right. Tap Reload.
Tap Reload to confirm.
How to Verify
After the reload, fault C203A0 should not appear. The robot arm starts up normally. You can run programs normally.
Still Need Help?
Tap the Support menu in Beacon to send us a message. It helps if you can share:
A photo of any error messages on the teach pendant
Your robot's serial number (printed on a label on the robot's base)
Whether the Beacon URCap was recently installed or updated









