Beckhoff CP69 Series, Manual

Page: 32 / 39

Troubleshooting
CP69xx 32 Version: 3.0
7 Troubleshooting
Table 11: Troubleshooting
Fault Cause Measures
No Control Panel function Lack of power supply to the Control
Panel
Cable not connected
CP29xx-0010: No supply of power to
the CU880x
Check the power supply cable
1. Correctly connect the cable
2. Call Beckhoff Service
Check the supply of power to
the CU880x
Multi-touch screen does not react or
only reacts sporadically Poor or missing functional earth of
the device
Poor or missing ground connection of
the user
Check potential equalization
and grounding measures
Touch the Control Panel frame
and check the touch function at
the same time
USB error during access with
TwinCAT via USB Cycle time in TwinCAT set to 10 ms
(standard) Increase the cycle time to
between 50 ms and 80 ms
No picture/backlight Problem with the cable connections CP29xx-0000: Check DVI cable
connection
CP29xx-0010:
1. Check the cable connec-
tions
2. Check the CU880x diagnos-
tic LEDs
3. Check the power supply
Beckhoff recommends using Beckhoff connection cables and connection kits.