Probing B axis with VM-3

[machine_easy2]

I could be doing something wrong hear but I spent a good chunk of my night trying to get the following bit of code to work. The goal is to orientate the part in B axis, while attempting to debug, I found if I just use a certain line twice, it works, otherwise, the value I was attempting to set, remains the same as it was... Anyone have a clue?

The program worked from the get go, only it would not change the machines G54 B axis value, unless I told it twice.

(CALL PROBE)
G00 G90 G54
T24 M06
X-2. Y0.183
G43 H24 Z4.

(PROBE - SINGLE SURFACE IN Z LEFT SIDE)
G65 P9995 W55. A20. H-0.3
G00 Z5.
X2.
Z4.

(PROBE - SINGLE SURFACE IN Z RIGHT SIDE)
G65 P9995 W56. A20. H-0.3

(RETRACT AWAY)
G00 G91 G28 Z0.

(DO THE MATH)
#19= [ [ #5243 - #5263 ] / 4 ]
#19= ATAN[ #19 ]
G91 B - [ ROUND[ #19 ] ]

(CODE SO NICE YOU MUST SAY IT TWICE)
#5225= #5025
#5225= #5025
(END PROBE)

[Matt@RFR]

You could try G103 P1 before any macros, which limits lookahead to one block. Then G103 by itself after your macros to unlimit lookahead for the rest of the program.

[haastec]

You could try G103 P1 before any macros, which limits lookahead to one block. Then G103 by itself after your macros to unlimit lookahead for the rest of the program.

+1

[machine_easy2]

Thanks guys, next time I set up this job I'll try that. I am however a little bit concerned, I use 'macros' very often and have never had a problem with the look ahead. When exactly must I cancel the look ahead? I've never had a problem otherwise ( and I have canned 'macro' programs )...