Decimal output of arcs

[Ed Lustic]

I need to create a subprogram with 5 place accuracy and only X, Y, I, & J moves. I modified the MP_EZ post to get the proper output except for the arcs. It seems that no matter what I do I can’t get more than 4 digits after the decimal. I can change the format statement to output less than 4 digits so I’m pretty sure I am changing the right one.

 

To test it I created a square with sides .123456789 and arcs that touch each corner of the square then chained the square and circle segments. I just changed all format statements to “fs2 (1-17) 0.9 0.9” out of frustration just to see what would happen. This is the output:

 

G0 X.123456789 Y.123456789

G1 X.123456789 Y-.123456789

G1 X-.123456789 Y-.123456789

G1 X-.123456789 Y.123456789

G1 X.123456789 Y.123456789

G2 X.1235 Y-.1235 I-.1235 J-.1235

G2 X-.1235 Y-.1235 I-.1235 J.1235

G2 X-.1235 Y.1235 I.1235 J.1235

G2 X.1235 Y.1235 I.1235 J-.1235

M17

 

The .nci does output to 9 places.

I am using version 9 (March 24 2004).

:firebounce: :firebounce: :firebounce: :firebounce:

[Paul Decelles]

set mtol to .00001:

 

mtol : .00001 #Motion Tolerance. This is used to evaluate the formatting of the NCI data internally.

 

There is a default arc check done internally on all arcs and the values are rounded based upon the setting of this value (or mtol's default value if it is not set in the post).

[Ed Lustic]

Paul,

Thanks for your reply. Setting mtol fixed the X & Y output but the I & J center points are still only 4 decimal places. Any suggestions to fix that?

 

Thanks,

Ed

[Paul Decelles]

Look for the following area of the post:

code:

---

pq              #Setup post based on switch settings

if stagetool = one, bldnxtool = one #Need to build Tool table

if arctype = one | arctype = four,

[

result = newfs(two, i)

result = newfs(two, j)

result = newfs(two, k)

]

else,

[

result = newfs(three, i)

result = newfs(three, j)

result = newfs(three, k)

]

---

and change the format statement number (two or three depending on your setting for arctype) to the number that you wwould like to use.

[Ed Lustic]

Thanks Paul that did the trick. I should have caught that myself when I changed bug2 to -40 and started looking at all the postblocks that were being called but for some reason I started looking at pmiscreal and skipped the first few. It's been a few years since I've done any post work or anything with Mastercam for that matter. The posts have changed a bit.

 

Thanks again,

Ed