Variables

The firmware implements a comprehensive and sophisticated variable system that enables dynamic G-code programming, parameter storage, and mathematical computations. This system allows users to store, retrieve, and manipulate numerical values throughout the execution of G-code providing significant flexibility and power for complex machining operations.

The syntax for variable assignment is #variable_number = expression

Example of Variable Assignment

#101 = 10.5                   ; Simple assignment
#102 = [5+3*2]                ; Mathematical expression
#103 = [#101+#102]            ; Using other variables
#104 = [sin[45]*10]           ; Using functions
#501 = 25.0                   ; Permanent variable

Variable Categories

1. Local Variables (#101-#120): Stored in RAM, lost on power cycle

2. Permanent Variables (#501-#520): Stored in EEPROM, persistent

3. Probe Variables (#151-#156): Read-only, set by probe commands

4. System Variables: Most are read-only, except #150

Variable Name	Function	read only?
#101-120	general purpose variables. not saved on power off	n
#501-520	general purpose variables. saved on power off	n
#150	probe tip diameter	y
#151	probed diameter X	y
#152	probed diameter y	y
#153	probed angle value	y
#154	probed corner center X	y
#155	probed corner center Y	y
#156	probed z position (M466)	y
#2000	current tool length offset	y
#3026	tool in spindle	y
#3027	spindleRPM	y
#3033	Is Optional Stop Mode Enabled?	y
#5021	machine position X Axis	y
#5022	machine position Y Axis	y
#5023	machine position Z Axis	y
#5024	machine position A Axis	y
#5041	Current WCS position X axis	y
#5042	Current WCS position Y axis	y
#5043	Current WCS position Z axis	y
#5044	Current WCS position A axis	y

Examples

Probe-Based Quality Control

; Probe workpiece dimensions
M461 X20 Y20                  ; Probe bore
#101 = #151                   ; Store X center
#102 = #152                   ; Store Y center
#103 = #154                   ; Store X diameter
#104 = #155                   ; Store Y diameter

; Check tolerances
#105 = [abs[#103 - 20]]       ; X diameter deviation
#106 = [abs[#104 - 20]]       ; Y diameter deviation
#107 = [#105 le 0.1]          ; X tolerance check (1=pass, 0=fail)
#108 = [#106 le 0.1]          ; Y tolerance check (1=pass, 0=fail)

; Report results
M118.1 P#107                  ; Print X tolerance result
M118.1 P#108                  ; Print Y tolerance result