Acu-Rite CNC 3500i User Manual

Page of 472
ACU-RITE 3500i
387
1
1
.4 A
d
v
a
nced Pr
ogr
a
mming
Modifiers
Use modifiers to alter the way the 3500i interprets a word address. For 
example, a single value in an Inch Mode program may be forced to 
Metric Mode, without programming G71. Or, arc center values (I, J, or 
K) may be forced to an absolute value.
The address and modifier must be accompanied by an ampersand 
(&). Place the ampersand (&) between the address word to be 
modified and the modifier. The address word is programmed first, 
followed by &, followed by the modifier, followed by the value.
The modifier is non-modal and is applied only to the address word it 
accompanies.
The following available modifiers are listed. 
Example:  G02 X2.0 Y1.0 I&A1.5 J&A1.0
The example forces the I and J center of an arc to be in Absolute 
Mode. I and J are incremental by default. Assume the axes are 
at X1 Y1. 
Block Separators
Block separators (;) can be used to place several functions on one line 
of a program. This is useful in Manual Data Input (MDI) Mode because 
you can combine several commands on one line at the command line. 
The number of separate steps in a program is limited only by the 
available memory.  Block separators can also be used in programs.
Example 1 executes five moves on the machine when you touch 
Start
. Each move is separated by the (;) block separator.
Example 1: G90 G01 X0 Y0 F30 ; X3 ; Y-2 ; X0 ; Y0
Example 2 moves the axes linearly to X0 Y0, then CW to X1 Y1, then 
linearly to X2.
Example 2: G90 G01 X0 Y0 F10 ; G02 X1 Y1 I1 J0 F8 ; G01 X2
Modifier
Function
A
Force the address word to be in Absolute Mode.
D
Force the address word to be in Incremental Mode.
E
Force the address word to be in Inch Mode.
M
Force the address word to be in Millimeter Mode.