Code 14860: [Channel %1 ] Block %2 Selection of the tool cutting rate not allowed. Cause %3
Issue Description & Safety Warning
The Siemens SINUMERIK 840D CNC has triggered a critical [Channel %1 ] Block %2 Selection of the tool cutting rate not allowed. Cause %3 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 = Cause of the error Definitions: Selection of the cutting rate SVC is not permissible in the current state Causes of the problem: the following function is active. 1: Constant cutting rate G96, G961 or G962 active 2: SPOS/SPOSA/M19 (spindle positioning mode) active 3: M70/axis mode active 4: SUG active Reaction: Correction block is reorganized. Local alarm reaction. Interface signals are set. Alarm display. Remedy: Activate the speed control mode for the spindle pr ior to programming SVC, for example with M3, M4 or M5. 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 14860 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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