PS045

Locate the program block triggering PS045 alarm (check the alarm screen for sequence number or line number).

Verify the G73 or G83 line contains all required parameters: G83 X_ Y_ Z_ R_ Q_ F_. Confirm Q is missing.

Add the Q parameter with appropriate peck depth value (e.g., Q0.5 for 0.5mm/0.020" pecks). For G83, typical Q values are 3-10x drill diameter; for G73, use smaller values.

Ensure Q value is positive and appropriate for material and tool. Too large a value risks chip packing; too small wastes cycle time.

Reset the alarm, restart the program from a safe position, and verify the cycle executes correctly.

Check if the program uses macro variables (e.g., G83 Z#1 R#2 Q#3 F#4) in the problematic cycle.

Access the macro variable screen (typically OFFSET/SETTING > Variable) and verify the variable assigned to Q contains a valid non-zero value.

If variable is empty or zero, assign a proper value or modify the program logic to ensure the Q variable is initialized before the canned cycle call.

Review all variable assignments in program header or subroutines to ensure proper initialization sequence.

Test the program in single block mode to confirm the Q variable correctly populates during execution.

Review multiple instances of G73/G83 in the program to determine if Q is systematically missing from all peck cycles.

Temporarily edit the program at the machine to add appropriate Q values to all affected cycles (e.g., Q5.0 for deep holes, Q1.0 for high-speed peck).

Document all manual edits as these will be overwritten if the program is re-posted from CAM.

Notify the CAM programmer or review the post-processor configuration file to ensure Q output is enabled for G73 and G83 cycles.

Request a corrected program from CAM department or permanently modify the post-processor to prevent recurrence on future programs.