TABLE LIMIT VIOLATION MESSAGE, Z Axis

[Chuck Keysor]

Hello, and please help this humble beggar once again....

I am finally cutting the railing caps discussed in my previous thread, using the Aspire generated model (instead of my Rhino model being imported into Aspire). The roughing pass went perfectly.....

I loaded the finishing toolpath file, and before any cutting began, I got the following screen message:

"Table Limit Violation.
Z Axis Beyond Software Table Limits!
"OK" to Temporarily Disable Limit Checking and Continue this File, or ........"

I terminated the operation. How do I get past this newest problem? Your help will be appreciated as always! Chuck

Notes:
a) For the roughing pass, I used a 4" overall length 1/2" endmill (fluted section was 2 3/8"). My finishing bit is a 3/4" dia. box core bit, (fluted section is 1 1/4" long).

I mention this, because I think this is the same error message I got when I had used my endmill, to try and cut my stock that was mounted on a "sled", that made the stock too tall to cut with my long bit, as I hit the zmax limit when attempting to zero my bit to the top of my stock.

But that is not the problem this time, as my stock is on the table top, and the error message is coming with my short bit this time.

b) Here are the first 20 lines of my finish cut file.... 'Rail Cap Finish 54 inch 4-17-13
'File created: Wednesday, April 17, 2013 - 02:55 PM
'SHOPBOT FILE IN INCHES
IF %(25)=1 THEN GOTO UNIT_ERROR 'check to see software is set to standard
C#,90 'Lookup offset values
'
'Turning router ON
SO,1,1
PAUSE 2
'
'
'Toolpath Name = 3D Finish 1
'Tool Name = Ball Nose (0.75 inch)
MS,3.0,0.8
JZ,0.800000
J2,0.000000,0.000000
J3,2.669787,2.692335,0.250000
J3,2.669787,2.692335,0.200000
M3,2.669787,2.692335,-0.133069
M3,51.399334,2.683473,-0.132375
M3,51.399334,2.632900,-0.130087
M3,51.399334,2.582328,-0.130753
M3,51.3993

[srwtlc]

Chuck,

What is your low/high Z limit in the VL fill-in sheet?

If you know that you aren't going to top out the Z or plunge through your table and can make it from one end to the other, I think I'd just turn off 'File Limit' checking in the same place and get your project done. Take some time later to figure out what's up with your limits, be it settings or faulty prox switches or wiring, or static, etc. Maybe even turn off the limit switches for now with VI if you know you're not going to go beyond them.

[Chuck Keysor]

Thank you Scott! I was able to cut the part after changing my lower Z limit as you suggested.

My low Z limit was set at -2.00" (which surprised me as being pretty small), but I guess I had never cut any deeper than that. And so I'd never even needed to do anything with that parameter before.

I had to go a meeting this evening before I could check how deep of a cut my cut file required. So I had a hard time concentrating, as I kept wondering what my maximum cut depth was. When I got home, and checked my cut file, I found the maximum depth of cut was -2.06"!

So with a quick change to the parameter you pointed out, I was able to run the finishing pass of my part. So thank you very much for your assistance! Chuck

[srwtlc]

Glad to hear it!