Troubleshooting steps
high
SINUMERIK 840D sl
201001 – Control unit communication fault
Control unit communication error
Details
alarm
Error typeControl communication
MeaningCommunication fault control unit error
Typical causesCheck control unit communication verify connections
Solutionshigh
Severity201000
Catalog references
System Information
SINUMERIK 840D sl201001
Utilities
Troubleshooting Steps
Other alarms
Other SINUMERIK 840D sl Alarms
22050 – Channel not ready
NC channel failed to initialize or is in error state
22051 – Channel initialization error
Channel failed to initialize during startup
22052 – Channel mode error
Channel mode conflict or invalid mode
25000 – Emergency stop active
Emergency stop button pressed or safety circuit activated
25050 – Axis hardware fault
Axis drive or motor detected a hardware fault condition
FAQ
Common questions
Which interface?
Check DRIVE-CLiQ or other control interfaces.
Community
Discussion & Experiences
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