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Siemens SINUMERIK Controller
Parameter · Intermediate · 30-120 minutes
Siemens 840D 61425 - Channel block: Parameter for measuring axis rotary axis 1 or 2
Alarm 61425 indicates that CYCLE996 (measuring cycle for rotary axes) has detected invalid or missing parameter configuration for the designated measuring axis (rotary axis 1 or 2). This servo-category alarm occurs when the NCK cannot properly configure the probe parameters or axis assignments required for rotary axis measurement in the active channel and block.
61425
Siemens 840D 61425 - Channel block: Parameter for measuring axis rotary axis 1 or 2
Channel block: Parameter for measuring axis rotary axis 1 or 2
Siemens SINUMERIK alarm 61425: Channel block: Parameter for measuring axis rotary axis 1 or 2. This alarm indicates a fault or error condition on the SINUMERIK 840D control. Refer to the Siemens SINUMERIK alarm documentation for the complete description and remedy.
Root Cause Summary
Alarm 61425 indicates that CYCLE996 (measuring cycle for rotary axes) has detected invalid or missing parameter configuration for the designated measuring axis (rotary axis 1 or 2). This servo-category alarm occurs when the NCK cannot properly configure the probe parameters or axis assignments required for rotary axis measurement in the active channel and block.
Safety
- Refer to Siemens documentation
- Ensure qualified technician performs repairs
Causes and Fixes
- 1
Navigate to Siemens HMI: Diagnostics > Parameters > Machine Data > MD 36100 series. Verify MD 36101 (Probe 1 measuring axis) and MD 36102 (Probe 2 measuring axis) contain valid rotary axis addresses (e.g., '4' for A-axis, '5' for B-axis depending on your kinematic setup).
Do not modify while cycle is executing; place control in RESET state first.
- 2
Cross-reference the axis indices against your machine kinematic definition in MD 32000 series (axis type declarations). Confirm the target axis is configured as rotary (MD 32010 = rotary axis type value).
- 3
If measuring axis parameters are blank or set to '0', assign the correct rotary axis number and store parameters (SAV command or HMI parameter save function).
- 4
Execute CYCLE996 again in a test block to confirm alarm 61425 is cleared.
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