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Siemens SINUMERIK Controller
Program/G-code · Intermediate · 30-120 minutes
Siemens 10241 - [up to SW 3.x only] Mode group mode change in active channel
Alarm 10241 occurs when an operator attempts to change the mode group (JOG, MDA, AUTO) while a channel is still actively executing a program or motion. This is a programming/operational error specific to SW 3.x and earlier versions where mode changes were more restrictive during active channel operations.
10241
Siemens 10241 - [up to SW 3.x only] Mode group mode change in active channel
[up to SW 3.x only] Mode group mode change in active channel
The channel is not in the stopped state. Reorganization is therefore impossible Control reaction: Alarm display.
Root Cause Summary
Alarm 10241 occurs when an operator attempts to change the mode group (JOG, MDA, AUTO) while a channel is still actively executing a program or motion. This is a programming/operational error specific to SW 3.x and earlier versions where mode changes were more restrictive during active channel operations.
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 the RESET button to acknowledge and clear the alarm.
- 2
Wait for the active channel to complete its current operation or press the feed hold/stop button to safely halt program execution.
- 3
Verify the channel status shows READY or IDLE before attempting the mode change again.
- 4
Perform the desired mode group change once the channel is inactive.
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