BECKHOFF CP69xx - Manual (Page 20)

Troubleshooting
Troubleshooting
Please also refer to chapter Foreword .
Pixel errors
Note
Pixel errors in the TFT display are production-caused and represent no
complaint-reason!
Fault correction
Fault Cause Procedure
The Control Panel shows no
function when the Industrial PC has
been started No power supply to the Industrial
PC
Cable not connected Check power supply cable
1. Correctly connect cable
2. Call Beckhoff Service
The Industrial PC does not boot
fully Setup settings are incorrect
Other cause Check the setup settings
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 Control Panel 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 Defective components in the
Control Panel Call Beckhoff Service
CP69xx 19