Code 16110: [Channel %1: ] Block %2 spindle %3 for dwell time not in control mode
Issue Description & Safety Warning
The Siemens SINUMERIK 840D CNC has triggered a critical [Channel %1: ] Block %2 spindle %3 for dwell time not in control mode alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Parameters: %1 = Channel number %2 = Block number, label %3 = Axis, spindle Definitions: The spindle can be in the positioning mode, osci llating mode and control mode. With the M command M70 it can be changed from a spindle to an axis. Th e control mode is divided into the speed-controlled and position-controlled mode, and it is possible to alternate between these with the keywords SPCON and SPCOF. Positioning mode: Position control (spindle position under SPOS/SPOSA) Oscillating mode: Speed control (M41 - M45 or M40 and S...) Control mode: Speed control (spindle speed under S..., M3/M4/M5) Position control (SPCON/SPCOF, spindle speed under S..., M3/M4/M5) Axis mode: Position control (M70/M3, M4, M5, axis position under user-selectable axis name) Reaction: Correction block is reorganized. Interface signals are set. Alarm display. Remedy: Check part program for correct spindle number. With M3, M4 or M5 put the required spindle into control mode before calling the dwell time. Program Continuation: Clear alarm with NC ST ART or RESET key and continue the program.
Source: SINUMERIK 840D sl / 840Di sl / SINAMICS S120 Diagnostics Manual (DAsl, 03/2009)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Siemens SINUMERIK 840D CNC Alarms
Siemens controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 16110 on the SINUMERIK 840D CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Siemens's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 4014 Siemens SINUMERIK 840D CNC codes.
Have a better solution?
Help the industrial community by sharing your repair experience for code 16110.
Need a searchable reference for more Siemens SINUMERIK 840D CNC manuals?
We structure equipment manuals into searchable code, title, cause, solution, safety note, and source-reference data. Send a PDF and example searched codes when you need public pages, private search, or structured exports.
Space reserved for Google AdSense / Industrial Affiliate Links
Monetization target for 2026