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Check the current position display and identify which axis triggered the alarm (X, Y, Z, or rotary axis).

Review parameters 1320-1327 to verify the stroke limit values for each axis match the machine's actual physical travel limits.

Check all active work offset values (G54-G59) in the offset settings page to ensure they are correctly set and not pushing the work envelope outside stroke limits.

Incorrect work offsets can cause crashes. Verify all offset values before proceeding.

Modify the part program or adjust the work coordinate system to keep all commanded positions within the parameter-defined stroke limits, then reset and restart.

Check parameter 1300 (stroke check type) - verify it is set correctly: 0=no check, 1=check after G28, 2=always check, 3=check with stored stroke limit.

Verify parameter 1301 bits to ensure stroke check is enabled for the correct axes (bit 0=X, bit 1=Y, bit 2=Z, etc.).

Confirm parameters 1320-1327 have logical values where the positive limit is greater than the negative limit for each axis.

Setting limits incorrectly can disable machine protection. Consult machine builder documentation.

If values were changed, cycle power to the control, perform a reference return (home) on all axes, and test with a safe program.

Always perform reference return after parameter changes affecting position.

Check the position display screen to verify if reference position is established (look for reference position indicators on all axes).

Perform a reference return (zero return/home) operation on all axes using the reference position function or G28 command.

Ensure the tool path is clear and there are no obstacles before executing reference return.

After establishing reference position, check the machine coordinate display to confirm all axes show expected home position values.

Verify external work offset parameters (G54-G59) are properly set relative to the machine home position, then reset alarm and restart program.