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7 MOTION PROGRAMS FOR POSITIONING CONTROL
Class and group of G-code are shown below.
Class Description
Modal G-codes
(Groups 01, 02, 03, 08, 12, 13, 20, 21)
Once any G-code is commanded, it is valid until another G-code in the same
group is commanded.
Initial status (at the power-on) is as follows.
Group 01 ·········· G00 Point-to-point positioning at the high-speed feed rate
Group 02 ·········· G23 Cancel, cancel/start invalid
Group 03 ·········· G90 Absolute value command
Group 08 ·········· G49 Tool length offset cancel
Group 12 ·········· G54 Word coordinate system 1 selection
Group 13 ·········· G64 Cutting mode
Group 20 ·········· G100 Time-fixed acceleration/deceleration switching command
Group 21 ·········· G99 Pre-read enable
Unmodal G-codes
(Group 00)
Valid only for the block in which any G-code has been commanded.
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