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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 30-120 minutes
Siemens 840D 101600 - Unknown error code
Alarm 101600 indicates the control system has encountered an internal error code that is not defined in the standard alarm catalog. This is typically caused by corrupted system files, software version mismatches between control components, or internal diagnostic functions detecting an undefined condition that cannot be properly categorized.
Siemens 840D 101600 - Unknown error code
Unknown error code
Siemens SINUMERIK alarm 101600: Unknown error code. This alarm indicates an error condition in the NC program or control configuration that must be resolved before the operation can continue.
Root Cause Summary
Alarm 101600 indicates the control system has encountered an internal error code that is not defined in the standard alarm catalog. This is typically caused by corrupted system files, software version mismatches between control components, or internal diagnostic functions detecting an undefined condition that cannot be properly categorized.
Safety
Causes and Fixes
Document the exact value shown in parameter %1 from the alarm display - this is the unknown error code that will help identify the source.
Check software version consistency: navigate to HMI → Commissioning → System Data → Version and verify NCK, HMI-Advanced, and PLC versions are compatible according to Siemens documentation.
Perform a system file check by booting into 'Boot System' mode and selecting 'Check and Repair File System' option.
This operation may take 15-30 minutes. Ensure no production parts are in the machine.
If file corruption is detected, restore system files from a known-good backup or perform a controlled software re-installation using the Siemens commissioning tools.
Always backup current machine data and parameters before re-installation.
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Always verify with your machine manual or a certified technician before performing service procedures.