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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 20-45 minutes
Siemens 10220 - [up to SW 3.x only] Channel active
This alarm occurs when the system attempts to execute a REORG (reorganization) command while the NC channel is still actively running a program. The REORG command clears the preprocessor buffer and reorganizes the NC block structure, typically triggered by buffer overflow conditions or internal overstore situations, but cannot execute until channel motion stops.
10220
Siemens 10220 - [up to SW 3.x only] Channel active
[up to SW 3.x only] Channel active
The internal command "delete NC blocks prepared by preprocessor and reorganize (REORG)" has been requested for this channel. It is initiated, e.g. as a result of an overstore, but cannot be executed in a running channel Control reaction: Alarm display.
Root Cause Summary
This alarm occurs when the system attempts to execute a REORG (reorganization) command while the NC channel is still actively running a program. The REORG command clears the preprocessor buffer and reorganizes the NC block structure, typically triggered by buffer overflow conditions or internal overstore situations, but cannot execute until channel motion stops.
Safety
- Only qualified personnel should diagnose and clear control alarms; follow the machine builder's safety procedures and lockout/tagout where hardware work is required.
Causes and Fixes
- 1
Press RESET or NC STOP to halt channel execution completely.
- 2
Wait for all axis motion to come to complete standstill and verify channel status shows inactive.
- 3
Clear the alarm and restart the NC program from a safe position using block search if necessary.
- 4
Monitor for recurring alarms which indicate underlying buffer overflow issues requiring program optimization.
If alarm repeats, the NC program may contain excessive lookahead blocks or complex contour calculations.
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