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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 30-120 minutes
Siemens 840D 101650 - Free BICO interconnection disabled via p300,p400 oder p922.
Alarm 101650 indicates that free BICO (BInector/COnnector) signal interconnections have been intentionally disabled through drive parameters p300, p400, or p922. This is typically a safety or configuration measure to prevent unauthorized or unintended signal routing changes during machine operation.
101650
Siemens 840D 101650 - Free BICO interconnection disabled via p300,p400 oder p922.
Free BICO interconnection disabled via p300,p400 oder p922.
Siemens SINUMERIK operator message 101650: Free BICO interconnection disabled via p300,p400 oder p922. This is an informational message from the SINUMERIK control indicating a system status or operation result that may require operator action.
Root Cause Summary
Alarm 101650 indicates that free BICO (BInector/COnnector) signal interconnections have been intentionally disabled through drive parameters p300, p400, or p922. This is typically a safety or configuration measure to prevent unauthorized or unintended signal routing changes during machine operation.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Access the drive parameter interface via HMI → Commissioning → Drive → Parameters.
- 2
Locate parameter p300 for the affected drive axis and check its current value. A value of 1 or higher indicates BICO write protection is active.
- 3
If BICO modifications are required, temporarily set p300 = 0 to disable write protection. Ensure you have proper authorization before changing this parameter.
Only disable p300 during authorized commissioning or maintenance. Leaving it disabled during production may allow unintended parameter changes.
- 4
After completing necessary BICO modifications, restore p300 to its original value (typically p300 = 1 or higher) and perform a drive reset (p970 = 1).
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Always verify with your machine manual or a certified technician before performing service procedures.