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Siemens SINUMERIK Controller
Servo/Axis · Intermediate · 30-120 minutes
Siemens 301705 - Axis drive distance-coded scale incorrectly parameterized
This alarm occurs when a distance-coded scale is selected (MD 1011.7=1) without configuring a length measuring system (MD 1011.4=1) or when MDs 1040, 1041, and 1042 are zero or negative. Fix by correctly parameterizing the machine data.
301705
Siemens 301705 - Axis drive distance-coded scale incorrectly parameterized
Axis drive distance-coded scale incorrectly parameterized
When selecting a distance-coded scale (MD 1011.7=1) it is also necessary to configure a length measuring system (MD 1011.4=1). In addition, the MDs 1040, 1041 and 1042 must not be zero or negative Control reaction: Mode group not ready. Channel not ready. NC Start disable in this channel. Interface signals are set. Alarm display. NC Stop on alarm.
Root Cause Summary
This alarm occurs when a distance-coded scale is selected (MD 1011.7=1) without configuring a length measuring system (MD 1011.4=1) or when MDs 1040, 1041, and 1042 are zero or negative. Fix by correctly parameterizing the machine data.
Safety
- Drive/power/encoder circuit: hazardous voltages may remain in the DC link after power-off. Lock out / tag out, wait for discharge per the drive documentation, and use qualified personnel only.
Causes and Fixes
- 1
Check MD 1011 settings
Verify that MD 1011.7=1 (distance-coded scale) and MD 1011.4=1 (length measuring system) are both set correctly.
- 2
Validate MD 1040-1042
Ensure MD 1040, 1041, and 1042 are not zero or negative; set appropriate positive values as per machine documentation.
- 3
Reset and test
Save changes, reset the control, and test the program to confirm the alarm is cleared.
Call a technician if:
- ·If machine data changes do not resolve the alarm
- ·If unsure about correct MD values for the specific machine
Prevention
- Always verify machine data settings before running programs with scale configurations
- Refer to machine documentation for correct MD values
Common Mistakes
- Overlooking MD 1011.4 setting for length measuring system
- Setting MD 1040-1042 to invalid values
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