Code 17831: [Channel %1: ] JOG a circle is not possible, reason %2
Issue Description & Safety Warning
The Siemens SINUMERIK 840D CNC has triggered a critical [Channel %1: ] JOG a circle is not possible, reason %2 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 = Cause Definitions: The JOG in circles was activated, but this is not possible because: 1. The current positions of the axes invo lved lie outside the selected pitch circle. 2. The current positions of the axes involved, with pitch circle selected and tool radius offset active, are too near to the center of the circle. 3. The current positions of the axes involved, with t ool radius offset active, are too near to the limiting circle during internal machining. 4. The current positions of the axes involved, with t ool radius offset active, are too near to the limiting circle during external machining. 5. The current positions of the axes involved in internal machining are outside the defined circle. 6. The current positions of the axes involved in external machining are inside the defined circle. 10. A rotation is acting on the current plane, that is the current plane is inclined in space. This is not currently supported. Reaction: Interface signals are set. Alarm display. Remedy: Define axis as geometry axis. Program Continuation: Clear alarm with the Delete key or NC START.
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 17831 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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