Introduction

For testing of NC programs, it is often helpful to have the syntax checked by advance decoding without moving axes.

Characteristics

Detected syntax errors of the NC program are displayed and logged and are available to the user for subsequent correction of the program.

NC program decoding is not aborted in the event of a syntax error and, instead, an attempt is made to continue operating with the next NC line.

Axes/drives are not moved during the syntax check.

The interface to the PLC is evaluated or updated only at the decoder level. For example, no synchronization of M/H functions takes place.

	After a syntax error message, defined restarting is possible with wide-ranging avoidance of follow-up errors.For decoding, the technological commands used in the program (M, H and T functions) must be specified accordingly in the channel parameter list.

Response to resource errors	Stack overflow	The NC line is discarded.
Response to syntax errors	Errors within $ and # commands	The NC line is discarded
	Unexpected character/term after $ and # commands	Use of information pertaining to the current NC line
	Unexpected/invalid characters/terms	Use of information pertaining to the current NC line
Response to semantic errors	Left-handed error in an allocation	Repositioning to after allocation
	Selection of NC commands that are not simultaneously permissible	Continued decoding without repositioning
	Exceeding/falling short of a limit	Continued decoding without repositioning
	Programmed value does not make sense	Continued decoding without repositioning
	Incomplete information	Continued decoding without repositioning