PS037

Review the program block number displayed with PS037. Check the geometry at and immediately after this block for internal radii, pocket dimensions, or slot widths that are smaller than 2x the tool radius.

Press OFFSET key and verify the tool geometry offset register (H or D code) being called. Check that the radius value in the geometry offset table is correct and not accidentally entered as diameter or in wrong units (mm vs inch).

Check parameters 5001-5004 (offset memory type configuration). Verify the offset number format matches your machine configuration (Type A/B/C) to ensure radius values are interpreted correctly.

Modify the part program to increase internal feature sizes to exceed 2x tool radius plus clearance, or select a smaller tool with appropriate radius compensation value and re-post the program.

Do not simply reduce offset value without verifying actual tool geometry or part will be oversized

Examine the program geometry at the alarm block for sharp angular changes between consecutive G01 moves or tangency breaks between G01/G02/G03. Calculate the included angle between vectors.

Access SYSTEM > PARAM and check parameter 5160 (acute angle check). Default is typically 1-5 degrees. If set to 0, acute angle checking is disabled. Verify this parameter matches your application requirements.

Check parameter 5161 (interference check type). Bit settings control how strictly the control checks for compensation interference: bit 0 (inside corner check), bit 1 (arc interference check). Verify appropriate checking is enabled.

Disabling interference checking (5161) may allow program execution but can cause unexpected tool paths and part damage

Revise the part program to add blend radii at sharp corners or insert intermediate points to create smoother transitions with larger included angles between consecutive moves. Minimum 10-15 degrees recommended.

Verify G41/G42 is called on a G01 linear move, not on G00, G02, or G03. The startup block must be a linear move with length greater than the compensation radius value. Check the block where PS037 occurs.

Check parameter 5006 bit 1 (startup/cancel check). When set to 1, strict checking is applied to compensation engagement/cancellation moves. Verify the lead-in move is at least 1.5-2x the tool radius in length.

Examine the program for G40 cancellation sequence. Ensure the final compensated move and the G40 cancel move are both linear G01 blocks with adequate length, and that no sharp angles exist at the cancellation point.

Rewrite compensation engagement: use G00 rapid to clearance position, then G01 linear approach move (minimum 2x tool radius length), then G41/G42 activation on next G01 move into the part contour.