Code Generator CGT Section Examples

The following are basic examples of what some common CGT sections might look like. You can copy and paste these sections into your own CGT file, then edit as required for your machine.

Declarations section

@DECLARE
#STR #myString
#DEC #myDecimal
#INT #myInteger
@

This sets three variable types.

Start section

@START
 G00 G40 G80 G90
 T#TOOL
 #SPNDL S#SPEED
 X#XPOS Y#YPOS
 Z#ZPOS 
@

This outputs some preparatory commands, calls the first tool, outputs the spindle On command and spindle speed. It then positions in X and Y, then in Z.

@Tool Change section

@TOOLCHG
 G00 Z#ZHOME
 X#XHOME Y#YHOME
 G40 G80 G90
 T#TOOL
 #SPNDL S#SPEED
 X#XPOS Y#YPOS
 Z#ZPOS 
@

This outputs a Z retract to the home position, then in X and Y. Next output some preparatory commands, calls the next tool, outputs the spindle On command and spindle speed. It then positions in X and Y, then in Z.

Program End section

@END
 M05 M09
 M30
@

This outputs spindle and coolant off commands, then a program end command.

Spot Drill section

@OP_SPDRL
#CALL(OP_CSINK)
@OP_SPFACE
#CALL(OP_CSINK)
@OP_CSINK
< #CYCLE>< X#XPOS>< Y#YPOS>< Z#ZDPTH>< F#FEED>
@@CYCLE
0,G81
0,G82
@

The @OP_SPDRL (spot drill) and @OP_SPFACE (spot face) sections will both go to (#CALL) the @OP_CSK (countersink) section. The #CYCLE word is a system table variable that will call the @CYCLE table. Since the @CYCLE table section is local (begins with two @@ signs) it will find it first and return the value based on the Cycle selector on the operation page of the step in the Planner. It then conditionally outputs the cycle word (G81 or G82), the X/Y position, the depth and feed. Each word will only output if its value has changed since the last time it was output because they are each in conditional brackets. <>

Tip The use of @FXD sections are deprecated and should not be used. They have been replaced with a more extensive @OP_(cycle) section.

Profile Start section

@STPROF
 #MOV X#XPOS Y#YPOS
 Z#ZPOS
@

This sets up for a series of feed moves. It positions to the X and Y beginning, then positions the Z.

Profile End section

@ENDPROF
 #MOV Z#ZPOS
@

This ends a series of feed moves by moving the Z to the current profile top + clearance location.

Line and Arc section

@LINE
< #MOV>< X#XPOS>< Y#YPOS>< Z#ZPOS>< F#FEED>
@

@ARC
< #MOV>< X#XPOS>< Y#YPOS>< I#XCTR>< J#YCTR>< F#FEED>
@

These are the output sections to create linear and circular feed moves. All words are conditionally output because of the conditional brackets - <>.

A user defined output section

@inspect
G00 Z#ZHOME
X#XHOME Y#YHOME
(Check depth of hole #S1)
M00
@

This user section will move the part away from the tool, display a message on the control screen instructing the operator to measure the hole depth of the item described in the string variable #S1, then output a program stop. It can be processed through various means including #CALL(), #GOTO(), and as an arguement ins a User Command.

A user defined no output $Section

@$arcCircumference
#RETNUM(2 * PI() * #ARAD)
@

This no output user $Section calculates the circumference for the current arc radius and returns it to the matching #arcCircumference CGT word declared with #CALCDEC using #RETNUM().