Beckhoff CU8801-0000 Operations Instructions download pdf (Page 21)

Troubleshooting

6 Troubleshooting

Pixel errors

Note

Pixel errors in the TFT display are production-caused and represent no complaint-

reason!

Anomalies of the Touchscreen

Note

Anomalies of the touchscreen sensor are production-caused and represent no

complaint-reason!

Fault Cause Measures

The Control Panel shows no

function

No power supply to the Control

Panel/ Industrial PC

Cable not connected

Check power supply cable

1. Correctly connect cable

2. Call Beckhoff Service

Computer boots, software starts,

but control does not operate

correctly

Cause of the fault is either in the

software or in parts of the plant

outside the Industrial PC

Call the manufacturer of the

machine or the software

No screen Transmission rate is too high when

using DVI cables longer than 20 m

Limit transmission rate for

DDC file to 50 kHz

USB error while TwinCAT access

via USB

Cycle time in TwinCAT is set on

10 ms (standard)

Increase the cycle time up to

50 ms till 80 ms

The Control Panel functions only

partially or only part of the time, e.g.

no or dark picture

Faulty backlight in the display

Defective components in the

Control Panel

Call Beckhoff Service

CP29xx 19

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Beckhoff CU8801-0000 Operations Instructions Page 21

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