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Siemens SINUMERIK Controller
PLC · Intermediate · 30-120 minutes
Siemens 840D 400137 - Delete DB 37 in the PLC and restart
This alarm occurs when the size of Data Block (DB) 37 in the PLC differs from the one created by the basic program. Fix it by deleting DB 37 in the PLC and restarting the system.
400137
Siemens 840D 400137 - Delete DB 37 in the PLC and restart
Delete DB 37 in the PLC and restart
Siemens SINAMICS drive alarm 400137: Delete DB 37 in the PLC and restart. This alarm indicates a fault condition in the SINAMICS servo drive system. Refer to the Siemens SINAMICS fault list documentation for the complete remedy.
Root Cause Summary
This alarm occurs when the size of Data Block (DB) 37 in the PLC differs from the one created by the basic program. Fix it by deleting DB 37 in the PLC and restarting the system.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Access PLC configuration
Use the Siemens programming tool (e.g., TIA Portal) to access the PLC data blocks.
- 2
Delete DB 37
Locate and delete Data Block 37 from the PLC memory.
- 3
Restart system
Restart the CNC system to regenerate DB 37 with the correct size.
Call a technician if:
- ·If the alarm persists after deleting DB 37 and restarting
- ·If access to PLC configuration is restricted or unfamiliar
Prevention
- Ensure proper system shutdown procedures
- Avoid interrupting data transfers to the PLC
Common Mistakes
- Not restarting the system after deleting DB 37
- Deleting the wrong data block
Seeing Multiple Alarms?
Seeing another alarm with this one? Enter the code.
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