I. Axis Disabling: Parameter Modification & Mode Switching

1. Core Parameter Adjustments

Parameter No.    Function Description    Modification Method    Notes
30130    Encoder type control    Set to 0 (no encoder mode)    Record original value before modification
30240    Encoder interface configuration    Set to 0    Value 3 = linear scale, 4 = absolute encoder

2. Quick Reference: Parameter Meanings
    •    30240 – Encoder Type
    •    0: No encoder
    •    1: Incremental encoder
    •    3: Linear scale (fully closed-loop system)
    •    4: Absolute encoder



II. Disabling the Linear Scale: Multidimensional Operation Guide

1. Axis Parameter Modification
    •    30200 (Number of Measurement Systems):
Change from 2 (dual measurement systems) → 1 (motor encoder only)

2. Ladder Diagram Signal Settings
    •    A. Activate first measurement system → Set DB380*.DBX1.5 to 1
    •    B. Disable second measurement system → Set DB380*.DBX1.6 to 0
    •    C. Quick parameter setting → Use parameter 14512 or DB4500.DBB1000

3. Troubleshooting Common Alarms
    •    Alarm 26002 (Resolution Error):
Check 31000 for correct encoder type; it should be 0 (motor encoder)
    •    Special Parameter Combination:
If 1315 = 909, no need to set P145(1) = 0


III. Advanced Optimization & Fault Diagnosis

1. Intelligent System Optimization

Enable the Siemens 828D automatic optimization function to dynamically adjust servo parameters and resolve issues such as position deviation or stick-slip after disabling feedback.

2. Mechanical & Electrical Inspection Checklist

Inspection Item    Standard Requirement    Testing Method
Scale parallelism    ≤ 0.1 mm    Laser interferometer
Reader head gap    0.8–1 mm    Feeler gauge
Ground resistance    ≤ 10 Ω    Ground resistance tester

3. Homing Recovery Procedure
    1.    Manually move the axis to the target position
    2.    Adjust 34210[0/1] based on the measurement system
    3.    Switch to homing mode and execute zero-point calibration


IV. Operational Safety & Best Practices
    •    Parameter Backup:
Always back up original data using a CF card or system backup function before making changes
    •    Permission Control:
Advanced parameters require manufacturer-level access
    •    Accuracy Matching:
Ensure the linear scale precision exceeds system requirements
(e.g., system: ±3 μm → use: ±1 μm scale)
    •    Alarm Handling:
If alarms persist after disabling, focus on checking parameters 31000, 30230 series


FAQ – Common Issues & Solutions

Q: What if position deviation occurs after disabling the linear scale?

A: Follow this checklist:
    1.    Inspect mechanical transmission (check for leadscrew backlash compensation)
    2.    Run system automatic optimization
    3.    Verify parameters 30200, 31000


Q: How to quickly locate linear scale faults?

A: Use the disable-and-compare method:
If alarms disappear after disabling the linear scale, it’s likely the source of the issue. Further check:
    •    Installation accuracy (parallelism, gap)
    •    Signal wiring (check for poor connections)