System information

SECTION SIX - PARAMETRIC PROGRAMMING
MOD
MOD is used to shift an axis position. It is generally used for rotary axis to obtain a positive
position between 0 and 360 degrees. It can be useful after a rotary axis has made several
revolutions in the same direction.
Examples:
G0 A750
361 ORIGIN 360 = 1
MOD A360 (A axis position is now 30°)
G0 A-100
MOD A360 (A axis position is now 240°)
G0 A-500
MOD A360 (A axis position is now 220°)
G0 A437
MOD A20 (A axis position is now 17°)
G0 A33.285
MOD A2.1 (A axis position is now 1.785°)
33.285 / 2.1 = 15.85
15.85 remainder is .85
.85 * 2.1 = 1.785
Note: Using the MOD command also shifts the software limits. This is desirable for most rotary
axis, but is undesirable for linear axis.
ORIGIN
Origin is another way to shift axis coordinates. It shifts the axis coordinates by the operator
amount.
Examples:
437 ORIGIN 20 = 417
33.285 ORIGIN 2.1 = 31.185
-500 ORIGIN 360 = -860
950 ORIGIN 360 = 590
Note: The origin command also shifts the software limits.
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