230-00FD

Access Machine Parameters

Press MOD key, enter machine parameter mode, navigate to MP320 (X+ limit), MP322 (Y+ limit), MP324 (Z+ limit).

Always backup current parameters before making changes using the parameter export function.

Verify Limit Values

Compare MP320-MP325 values against machine specifications and actual travel distances. Check if values are in correct units (mm/inch).

Never set limits beyond actual machine travel - this can cause crashes.

Test and Validate

After parameter adjustment, perform manual axis movement to verify limits are correct. Use handwheel mode to approach limits safely.

Set limits 2-3mm inside actual travel to provide safety margin for overtravel.

Review Program Coordinates

Open the NC program in PROGRAM RUN mode, check all X, Y, Z coordinates against machine limits. Look for decimal point errors or unit conversion mistakes.

Use the TNC's graphics simulation to visualize the complete tool path before execution.

Check Program Origin

Verify the program zero point (G54-G59) is set correctly. Access MANUAL OPERATION > PRESET TABLE to review work coordinate systems.

Incorrect preset values can shift the entire program outside machine limits.

Validate Tool Length Compensation

Check tool table entries for excessive tool length values that might push the calculated path beyond limits when applied.

Use TOOL TABLE function to verify all tool geometry data matches actual tooling.

Access Preset Table

Go to MANUAL OPERATION mode, select PRESET TABLE, review active work coordinate system values (G54-G59).

Use the coordinate display to verify current position relative to active work coordinate system.

Recalculate Work Offsets

Use edge finder or probe to re-establish correct work coordinate system. Update preset table with verified values.

Always double-check preset calculations - errors here affect every programmed move.

Test Program Boundaries

Run program in single block mode or use program test function to verify all moves stay within machine limits.

Enable dry run mode with rapid traverse override to safely test program boundaries.

Check Limit Switch Status

Access MANUAL OPERATION > DIAGNOSTIC, view input signals to verify limit switch states match actual axis positions.

Manually actuate limit switches to verify proper signal response in diagnostic display.

Inspect Physical Switches

Visually inspect positive limit switches for damage, proper mounting, and correct actuation distance. Clean contacts if necessary.

Always follow lockout/tagout procedures when inspecting limit switches.

Verify Wiring Integrity

Check limit switch wiring for loose connections, damaged cables, or incorrect polarity using multimeter.

Reference machine electrical drawings to verify correct limit switch input assignments.