Extracting T-values From Advanced Scan from within a loop.

Greetings to all. I am new to PC-DMIS. My company bought a CMM in March of 2021, Has Version 2020 R2. It is a Global 05.07.05

Our company makes spherical washers ranging in OD size from ≈1 inches to 3 inches.

Currently I can use a linear closed scan from the ID to OD and have ≈40-60 hits generated.

What I want to do after the scan is loop through the the number of hits and report the T-values from that scan.

Unfortunately, what I've come across during the loop is that ≈10 iterations in, the T-values don't match and are rising when creating the dimension.

If code will help let me know.

Additionally, are there any other sites/ pages to look at to get a better understand of how the functions are supposed to work.

Parents

JEFMAN over 2 years ago

I would try something like this :

ASSIGN/V1=DOT(SCN1.HIT[1..SCN1.NUMHITS].XYZ-SCN1.HIT[1..SCN1.NUMHITS].TXYZ,SCN1.HIT[1..SCN1.NUMHITS].TIJK)
ASSIGN/COUNTER=0
V2 =LOOP/START,ID=YES,NUMBER=SCN1.NUMHITS,START=1,SKIP=,
OFFSET:XAXIS=0,YAXIS=0,ZAXIS=0,ANGLE=0
IF/(5*ROUND(V2/5))==V2
ASSIGN/COUNTER=COUNTER+1
ASSIGN/V3="SCN1.HIT["+V2+"]"
PNT_SCN =GENERIC/POINT,DEPENDENT,RECT,$
NOM/XYZ,V3.TX,V3.TY,V3.TZ,$
MEAS/XYZ,V3.X,V3.Y,V3.Z,$
NOM/IJK,V3.TI,V3.TJ,V3.TK,$
MEAS/IJK,V3.I,V3.J,V3.K,$
ASSIGN/TVAL[COUNTER]=V1[V2]
END IF/
LOOP/END
SCN2 =FEAT/SET,CARTESIAN
THEO/<0,0,0>,<0,0,1>
ACTL/<0,0,0>,<0,0,1>
CONSTR/SET,BASIC,PNT_SCN[1..COUNTER],,
COMMENT/REPT,
TVAL

Then, you can also dimension SCN2, and use it with datapage, or just extract TVAL.
I'm not at the cmm, if generic point doesn't calculate the T_value, then use an offset point from origin with the same assignments.

JeremyPanitz over 2 years ago in reply to JEFMAN

Thank you again for the advice. I'll give it a try...
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JeremyPanitz over 2 years ago in reply to JEFMAN

Thank you again for the advice. I'll give it a try...
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