Delta Tau GEO BRICK LV User Manual

 

; Arc move; I=20-0=20; J=0-0=0 

; Arc move; I=40-40=0; J=0-20=-20 

J

I 

I

CENTER

(15,20)

START

(25,20)

END

(15,10)

X

X 

Y

Y

CIRCLE2

 

TM1000

 

X15Y10I-10

 

X 

Y

START (10,0)

END

(0,10)

2

1

CIRCLE2

 

TM2000

 

X0Y10R-10

 

CIRCLE2

 

TM2000

 

X0Y10R10

 

1

2

X 

X

Y 

I 

Y 

J

CENTER

 

(20,20)

 

START,END

(30,10)

 

X 

X

Y 

Y 

NORMAL K-1

ABS (X,Y)

INC (R)

CIRCLE1

F10

X25Y30I20J5

START

 

(10,5)

 

CENTER

 

(30,10)

 

END

 

(25,30)

 

Defaults

CIRCLE1

F25

X30Y10I-10J10

or

I-10J10

 

If the radius method of locating the arc center is used, the radius is the number after the letter R in the 
move command.  This value always represents the distance from the move starting point.  With radius 
specification, it is also necessary to specify whether the arc to the move endpoint is the long route (>= 
180 degrees) or the short route (<= 180 degrees).  Turbo PMAC’s convention is to take the short arc path 
if the R value is positive and the long arc path if R is negative.  R values are not modal – a value must be 
specified on each move command line.  It is not possible to do a full circle in a single move command 
with a radius specification; the circle must be broken into at least two parts. 
A typical circular move command with a radius specification is: 

Example: 
To do the same moves as in the above example, except with radius center specification, the program 
would be: 

; XY plane 

F10 

CIRCLE1 
X20 Y20 R20  

; Arc move < 180 deg  

 

; Automatically linear 

; Arc move > 180 deg   

Do not use the R radius specification if using the axis transformation matrices for 
scaling purposes with the AROT or IROT statements.  The radius value will not 
scale with the axes.