7100

Check Positioning Parameters

Navigate to HMI > Commissioning > Machine Data and verify MD35210 (positioning timeout) and MD35220 (positioning tolerance) values are appropriate for your spindle system.

Typical timeout values range from 5-15 seconds depending on spindle inertia and drive response.

Monitor Spindle Response

Use HMI > Diagnostics > Drive Diagnosis to observe actual spindle position feedback during M19 command execution and compare against target position.

Ensure spindle is completely stopped before initiating orientation sequence.

Adjust Timeout Value

If spindle eventually reaches position but exceeds timeout, increase MD35210 value incrementally by 2-3 seconds and test orientation function.

Document original parameter values before making changes for easy rollback.

Verify Encoder Configuration

Check MD30240 CTRLOUT_SCALE_FACTOR and MD31020 ENC_RESOL match actual spindle encoder specifications in HMI > Commissioning > Axes > Spindle.

Cross-reference encoder nameplate data with configured resolution values.

Check Encoder Signal Quality

Use HMI > Diagnostics > Encoder to monitor encoder signal amplitude and verify clean square wave signals without noise or dropouts.

Check encoder cable routing away from power cables to avoid electromagnetic interference.

Test Encoder Functionality

Manually rotate spindle and observe position feedback in HMI > Diagnostics > Actual Values to confirm encoder tracks correctly without jumps or reversals.

One encoder revolution should equal exactly 360 degrees in the position display.

Check Drive Parameters

Review spindle drive controller gains and verify MD32200 POSCTRL_GAIN and MD32610 EQUIV_SPEEDCTRL_TIME are properly tuned for positioning mode.

Start with manufacturer recommended values and adjust based on system response.

Inspect Mechanical System

Check spindle bearings, chuck mechanism, and orientation pin for binding or excessive wear that could prevent smooth positioning.

Lock out spindle power before performing mechanical inspection.

Perform Drive Optimization

Use HMI > Commissioning > Drive Optimization to run automatic tuning sequence for spindle positioning mode if mechanical issues are resolved.

Ensure spindle is unloaded during optimization for best results.

Verify M19 Syntax

Check NC program for proper M19 format with valid orientation angle (M19 or M19=xxx) and ensure no conflicting spindle commands on same line.

M19 without angle parameter orients to position defined in MD35200 SPIND_DEF_ORIENT_POS.

Check Modal State

Verify spindle is in correct mode before M19 by ensuring previous M03/M04 commands have completed and spindle has decelerated to orientation speed threshold.

M19 will not execute if spindle speed exceeds MD35230 SPIND_ORIENT_SPEED threshold.

Test Manual Orientation

Execute M19 command manually in MDI mode to isolate programming issues from mechanical or parameter problems.

Use single block mode to step through orientation sequence and observe each phase.