Code 207553: <location>Drive encoder: Sensor Module configuration not supported
Issue Description & Safety Warning
The Siemens SINUMERIK 840D CNC has triggered a critical <location>Drive encoder: Sensor Module configuration not supported 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
Message value: Encoder data set: %1, first incorrect bit: %2, incorrect parameter: %3 Drive object: SERVO, VECTOR Reaction: OFF2 (IASC/DCBRAKE, NONE, OFF1, OFF3, STOP1, STOP2) Acknowledge: IMMEDIATELY (POWER ON) Cause: The Sensor Module does not suppor t the requested configuration. If p0430 (cc = 0) incorrect, the following applies: - In p0430 (requested functions), at least 1 bit was set that is not set in r0458 (supported functions) (exception: bits 19, 28, 29, 30, 31). - p1982 > 0 (pole position identification requested), but r0458.16 = 0 (pole position identification not supported). If p0437 (cc = 1) incorrect, the following applies: - In p0437 (requested functions), at least 1 bit was set that is not set in r0459 (supported functions). Fault value (r0949, interpret hexadecimal): ddccbbaa hex aa: encoder data set no. bb: first incorrect bit cc: incorrect parameter cc = 0: incorrect parameter is p0430 cc = 1: incorrect parameter is p0437 dd: reserved (always 0) SINAMICS-Alarms Diagnostics Manual (DAsl), 03/2009 Remedy: - check the encoder parameterization (p0430, p0437). - check the pole position identification routine (p1982). - use the matching encoder evaluation (r0458, r0459). See also: p0430, p0437, r0458, r0459, p1982
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 207553 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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