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Check the program line causing the alarm. Look for G31 commands and verify the P value (e.g., G31 P5 would fail if only 4 skip signals are available).

Navigate to SYSTEM > PARAM and check parameter 6200#0 (SKP) and parameter 6201 bits to verify multi-stage skip function is enabled and how many skip signals are configured (typically 4 standard, 8 extended).

Verify the physical skip signal configuration matches parameter settings by checking DIAGNOSIS > I/O screen for skip signal inputs X0.0-X0.3 (or X0.0-X0.7 for extended) are properly wired and recognized.

Correct the G31 P value in the program to match available skip signals (P1-P4 standard or P1-P8 extended). If more skip signals are needed, enable extended skip in parameters 6200-6201 and verify hardware connections.

Changing skip signal parameters requires machine restart and verification of probe/sensor hardware configuration

Locate the G04 command in the program and verify the Q value format. Q values must be positive integers representing milliseconds (e.g., G04 Q1000 = 1 second dwell).

Navigate to SYSTEM > PARAM and check parameter 6010 to determine the maximum allowable dwell time in milliseconds for your system configuration.

Correct the G04 Q value to be within range: Q must be >0 and ≤ parameter 6010 limit. For long dwells, verify the value doesn't exceed 8-digit maximum (99999999ms = ~27.7 hours).

If using G04 P (seconds) instead of Q (milliseconds), verify correct format: P uses decimal point (G04 P1.5 = 1.5 sec) while Q uses integer milliseconds (G04 Q1500 = 1.5 sec). Do not mix formats.

Excessively long dwell times can cause production delays; verify intended dwell duration before execution

Navigate to SYSTEM > PARAM > [ALL] and backup current parameters to CF card or memory before making changes. Check parameter 6200#0 (multi-stage skip enable) and parameters 6201-6204 for skip signal configuration.

Always backup parameters before modification; incorrect skip parameters affect probe and measuring cycles

Compare parameter settings with machine documentation or OEM specifications. Verify parameter 6200#0=1 if using multi-stage skip (G31 P1-P4), and parameter 6200#1=1 for extended skip (P1-P8).

If parameters appear corrupted or inconsistent, restore from a known good backup or re-enter skip signal parameters per machine builder specifications. Power cycle the control after parameter changes.

Parameter restoration requires machine restart and full functional verification of probe systems