4500

Check machine status on the CNC screen - verify no active M-codes or punch cycles are running. Ensure machine is in EDIT, MDI, or appropriate manual mode, not AUTO during part cycle.

Verify emergency stop is not activated and all safety interlocks are satisfied. Check I/O diagnosis screen (SYSTEM > DIAGNOSIS > I/O) for PMC signals G0000-G0007 to confirm door interlocks and safety circuits are closed.

Check parameter 6700#0 (repositioning enable) is set to 1. Navigate to SYSTEM > PARAM > PARAM and search for parameter 6700 to verify repositioning function is enabled for punch press control.

Parameter changes require parameter write enable (PWE) setting 1 and may require machine restart

Verify PMC ladder logic controlling repositioning permission signal. Check PMC address F-series flags for repositioning enable condition using SYSTEM > PMC > PMCDGN or ladder display to confirm logic allows repositioning.

Check ram position signal at I/O diagnosis screen (SYSTEM > DIAGNOSIS > I/O). Verify ram is in full UP position - typically monitored via PMC input signal X-address. Ram must complete return stroke before repositioning is permitted.

Never override ram position interlocks - serious machine damage can result

Verify turret or tool changer is not in motion. Check PMC signals for turret indexing complete (typically G-address flags). Navigate to SYSTEM > PMC > PMCDGN and monitor tool change completion signals.

Check parameter 6701 (repositioning conditions) for punch press specific settings. Verify bit settings match machine builder specifications for interlock bypass or required conditions.

Review PMC alarm messages at SYSTEM > PMC > PMCALM screen. Cross-reference any active A-address alarms with machine builder PMC documentation for repositioning inhibit conditions.

Check for servo alarms on all axes. Navigate to SYSTEM > ALARM and verify no 400-series servo alarms are present. Clear any existing alarms and verify amplifier ready LEDs are solid green.

Verify axis position is not at software stroke limits. Check SYSTEM > DIAGNOSIS > PARAMETER and review software limit parameters 1320-1327 (OT+ and OT- for each axis) against current position shown on POSITION screen.

Check servo ready signals at I/O diagnosis (SYSTEM > DIAGNOSIS > I/O). Verify servo enable output signals (typically Y-address) are ON and servo ready input signals (X-address) are received from amplifiers for all repositioning axes.

Verify parameter 1815 (repositioning axis specification) is correctly set to specify which axes participate in repositioning function. Incorrect axis specification will prevent repositioning operation.

Parameter 1815 is axis-specific - verify bit pattern matches machine configuration