Code 10735: [Channel %1: ] Block %5 axis %2 coordinate system-specific working area limitation violated, residual distance: %6 %3<ALUN>
Issue Description & Safety Warning
The Siemens SINUMERIK 840D CNC has triggered a critical [Channel %1: ] Block %5 axis %2 coordinate system-specific working area limitation violated, residual distance: %6 %3<ALUN> 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 = Axis name, spindle number %3 = Unit of distance %4 = Block number, label|residual distance Definitions: This alarm is generated if it is determined duri ng block preparation that the programmed path of the stated axis violates the coordinate system-specific working area limitation. Reaction: Correction block is reorganized. Local alarm reaction. Interface signals are set. Alarm display. Remedy: a) Check NC program for correct positional data and, if necessary, make corrections. b) Check work offsets (current frame) c) Correct the working area limitation with WALCS1... WALCS9, or d) Correct the working area limitati on in $P_WORKAREA_CS_LIMIT_PLUS or $P_WORKAREA_CS_LIMIT_MINUS, or e) Deactivate the working area limitation with $P_WORKAREA_CS_MINUS_ENABLE =FALSE or $P_WORKAREA_CS_PLUS_ENABLE. In cases d) and e), then reactivate the group of the selected coordinate system-specific working area limitation. 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 10735 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.
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