Troubleshooting
C9900-G05x 31Version: 1.0
7 Troubleshooting
Table17: Troubleshooting
Fault Cause Measures
Push-button extension doesn't
work
No supply of power via the 19-pin
round connector
Check the cable for the power
supply
Other cause Call Beckhoff Service
USB devices not found
(TwinCAT System Manager)
No USB connection
Other cause
Check the cables
Check the transmitter box
Beckhoff Service
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