Code 20060: [Channel %1: ] Axis %2 cannot be traversed as geometry axis
Issue Description & Safety Warning
The Siemens SINUMERIK 840D CNC has triggered a critical [Channel %1: ] Axis %2 cannot be traversed as geometry axis 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 Definitions: The axis is currently not in "Geomet ry axis" state. Therefore, it c annot be traversed in JOG mode as geometry axis. If the abbreviation WCS (workpiece coordinate system) is displayed in the "Position" screen, then only the geometry axes can be travers ed by means of the direction keys ! (MCS... Machine coordinate system; all machine axes can now be traversed by using the direction keys on the machine control panel). Reaction: Alarm display. Remedy: Check the operating steps to establ ish whether geometry axes really must be traversed, otherwise switch over to the machine axes by activati ng the "WCS/MCS" key on the machine control panel. Diagnostics Manual (DAsl), 03/2009 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 20060 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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