O-code Repeat

The O-code repeat is a flow-control instruction for NC programs. It executes the statements between a matching repeat and endrepeat a specified number of times. The same O-number labels both the repeat and endrepeat lines.

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Specification

1 source

Language	gcode
Code	repeat
Group	flow control
Syntax	o103 repeat [5] ... o103 endrepeat
Dialect	rs274ngc

Study notes

O-codes use the letter O, not the digit zero, as the first character, such as O100 or o100.
The repeat count is shown in square brackets in the example o103 repeat [5].
The example uses repeat/endrepeat to mill 5 diagonal shapes starting at the present position.
The repeat and endrepeat lines share the same O-number label.
A label on endrepeat that does not refer to a corresponding repeat causes an error message and aborts the interpreter.