R is the radius of the circle (R is positive value, when arc <=180 degree, R is radius)
If I、J are specified, don’t use R; vice versa
7) G04 pause / delay command
This command is to set up delay, when program run to this command, program will be delayed as L
specified time, unit is second
Format: G04 Ln
e.g.: G04 L2.4 (delay 2.4 s)
When run G04, press [start] to stop delay, to continue the program after G04, press [esc] to stop
current program
8) G26, G27, G28 back to reference point
This command is to make cutting tool back to the reference point
Format: G26 X axis back to reference point
G27 Y axis back to reference point
G28 X, Y axis back to reference point at the same time
e.g.: G28 (X, Y axis back to reference point at the same time, equal to G00)
9) G22/G80 loop statement
This command is for program loop, G22 is the start of loop, and the number of loops, G80 is the end of
the loop, can nest loop, not over 5 levels, G22 and closest G80 is a loop.
Format: G22 Ln_ (L is the number of loop)
Loop
G80
e.g.: N000 G92 X100 Y100
N001 G00 X60 Y80
N002 G22 L5----------------------start of the first-level loop
N003 G00 V50 U-25
N004 G22 L5----------------------start of the second-level loop
N005 G01 U5 V-10
N006 G80----------------------------end of the first-level loop
25
N007 G80----------------------------end of the second-level loop
N008 G28
N009 M02
10) Cutting tool radius compensation statement (G40、G41、G42)
Format: G41 (or G42) Rn
.
Program section in need of compensation
.
.
G40
Remark: G41 is along fabricating route, left compensation half of flame diameter
G42 is along fabricating route, right compensation half of flame diameter
G40 is excursion end
Because cutting tool compensation is finished automatically, before G41, G42, there should be G00
rapid location statement, so that the nozzle adjusts the position; after G40 cancels compensation, it
needs a G00 statement to adjust the position back.
Finish M80 all output ports are closed
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