058

Review the alarmed block number displayed on the CNC screen. Check the program at this N-number for missing L (length), A (angle), I/J/K (incremental), or X/Y/Z endpoint specifications.

Verify that each DDD block contains at least two geometric definitions. For example, G01 requires angle and length, or coordinate and angle, or two coordinates to define the endpoint uniquely.

Check Parameter 3450-3459 (Drawing Dimension settings) to confirm DDD feature is properly enabled with bit settings. Bit 0 of P3450 enables DDD mode.

Correct the program by adding the missing dimensional constraint (L, A, or absolute coordinate) to fully define the endpoint geometry. Reset alarm and test program in single block mode.

Examine the alarmed block for conflicting dimensional specifications. Check if programmed angle, length, and endpoint coordinates create mathematically inconsistent geometry.

Verify the previous block's endpoint coordinates by checking CURRENT POSITION screen (POSITION > CURRENT). Ensure the starting point for the alarmed move is correct and matches program intent.

Check for over-constrained geometry where three or more conflicting dimensions are specified. Remove redundant or conflicting specifications keeping only the two required constraints.

Validate corrected geometry using graph display function (GRAPH screen) to visually confirm toolpath before running program.

Review Fanuc DDD programming format in the operator's manual specific to your control series. Verify correct use of comma separators between address codes in drawing dimension blocks.

Check Parameter 3452 bit 0 (DDD command format selection) to verify the correct format type matches your program. Bit 0=0 uses angle/length format, bit 0=1 uses coordinate format.

Verify correct use of A (angle) and L (length) addresses. Angle A must be specified in degrees relative to the positive X-axis or previous move direction depending on P3452 bit 1 setting.

Correct syntax errors and ensure proper format: G01 X__ Y__ A__ L__ with commas separating addresses as required by your control format. Clear alarm using RESET and re-execute program.