What causes Siemens SINUMERIK alarm 16110?

Part program contains an illegal or unsupported command for the current machine configuration. Channel or axis configuration does not support the programmed function. Required machine option not enabled for the commanded function. Axis assignment or transformation configuration error. Program execution sequence error.

How do I fix Siemens SINUMERIK alarm 16110?

1. Identify the program block that triggered the alarm — note the channel and block number. 2. Review the commanded function against the SINUMERIK programming manual. 3. Check if the required machine option is enabled for this function. 4. Verify axis assignments and transformation settings are correct for the application. 5. Consult the Siemens SINUMERIK alarm manual for alarm 16110 specific remedy.

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Siemens SINUMERIK Controller

Spindle · Intermediate · 30-120 minutes

Alarm 16110

Siemens 840D 16110 - Channel block spindle for dwell time not in control mode

Alarm 16110 fires when a dwell time (G04) or M command is executed on a spindle that is not in SPCON (spindle control mode). The spindle must be transitioned from positioning or oscillating mode into speed-controlled or position-controlled mode before dwell operations can be performed. This is a block-level safety check in the NCK to prevent timing violations.

Siemens SINUMERIKSpindleIntermediate30-120 minutes

16110

Siemens 840D 16110 - Channel block spindle for dwell time not in control mode

Channel block spindle for dwell time not in control mode

Root Cause Summary

Alarm 16110 fires when a dwell time (G04) or M command is executed on a spindle that is not in SPCON (spindle control mode). The spindle must be transitioned from positioning or oscillating mode into speed-controlled or position-controlled mode before dwell operations can be performed. This is a block-level safety check in the NCK to prevent timing violations.

Safety

Refer to Siemens documentation
Ensure qualified technician performs repairs

Causes and Fixes

1
Review NC program block %2 in channel %1 for G04 or dwell command immediately preceding the alarm. Verify if spindle %3 was explicitly switched to SPCON mode.
2
Add SPCON command before G04 dwell in NC program. Example: SPCON(SPEED) followed by M3/M4 spindle start, then G04 P[dwell_time].
SPCON must execute successfully before the dwell block is processed by NCK.
3
Check MD20050 (Spindle control mode) in Diagnostics > Parameters > Machine Data for spindle axis. Verify bit configuration allows SPCON transitions.
4
Use HMI menu: Diagnostics > Spindle > Spindle State to confirm spindle %3 is showing 'CONTROL' mode, not 'POSITIONING' or 'OSCILLATING'.

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