[Concealed45]

Is anyone framiliar with this problem in EMC2 ? If I run a program from startup, set my tools and run it works great. But if I try to run another program, or have to change tools without shutting down and restarting it seems to make up its own numbers and will tell me that a Z move will be past the limits when I know it is not. I am looking for a fix to this last night I was running a prog and had to change a tool offset midrun, reloaded the offset table, and it wouldnt run, had to shut down and rehome everything which lost my part location and it was a real pain to find it again.

TIA

[chester88]

are you using G92 in your program?
Actually if you post your program somewhere it would be helpful.
I have not heard of this problem before.
Also what version of EMC are you using?

[Concealed45]

It is version 2.3 I believe, will have to go look to be sure. I am using a G92 and posting with MasterCam9 EMC2MPFAN post processor. It does this on any program. I will see If I have a program small enough to copy in here.

[Concealed45]

Here is the shortest I found, I do notice there is not a G92 as I thought there was.


%
(PROGRAM NAME - 3800VACCOVER)
(DATE=DD-MM-YY - 18-10-09 TIME=HH:MM - 13:36)
( 1/4 CENTERDRILL TOOL - 1 DIA. OFF. - 21 LEN. - 1 DIA. - .25)
N100G20
N102G90G40G49G80
N104T1M6
N106G0G90G54X.3988Y.3836S2400M3
N108G43H1Z.1
N110G99G81Z-.1R.1F6.
N112X1.5108Y1.7089
N114X2.4439Y.3827
N116X3.556Y1.708
N118G80
N120M5
N122G0G53Z0.
N124T2M6
( #Q DRILL TOOL - 2 DIA. OFF. - 22 LEN. - 2 DIA. - .332)
N126M00
N128G0G90X.3988Y.3836S240M3
N130G43H2Z.1
N132G99G83Z-.26R.1Q.1F6.
N134X1.5108Y1.7089
N136X2.4439Y.3827
N138X3.556Y1.708
N140G80
N142M5
N144G0G53Z0.
N146T3M6
( 1/4 FLAT ENDMILL TOOL - 3 DIA. OFF. - 0 LEN. - 3 DIA. - .25)
N148M00
N150G0G90X.549Y-.2087S2400M3
N152G43H3Z.25
N154Z.1
N156G1Z-.0433F6.
N158X.4647Y-.1165F10.
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N182G1X.1958Y-.1928
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N402G2X2.0045Y.5188I.0196J.4596
N404G1X2.2406Y1.2806
N406G2X2.6364Y1.7523I.7594J-.2353
N408G1X3.3456Y2.117
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N412G1X3.7593Y.8101
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N438G1X2.2406Y1.2806
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N442G1X3.3456Y2.117
N444G2X3.9953Y1.5718I.2104J-.4091
N446G1X3.7593Y.8101
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N466X2.5111Y-.1172F10.
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N500X2.5111Y-.1172F10.
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N564X2.5957Y-.2093
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N568X2.5111Y-.1172F10.
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N590G3X2.3345Y-.1097I-.0053J-.1249
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N596Z.1
N598X2.5961Y-.1993
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N602X2.5116Y-.1072F10.
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N616G1X3.7498Y.813
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N620G1X2.6497Y-.0175
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N624G3X2.3349Y-.0997I-.0053J-.1249
N626G1X2.2429Y-.1843
N628G0Z-.01
N630M5
N632G53Z0.
N634M30

[chester88]

Just off hand I kinda think it's the G92.
G92 is remembered between runs of EMC unless you cancel it with g92.1 or g92.2
Hopefully some g code masters will come here and help you out some more.
And boy is that program hard to read without spaces between g code commands!
I would kill if that is what I had to deal with everyday!

Chris

[Concealed45]

LOL, I know, thats how Mastercams Editor puts it up. At least once its on EMC when you edit it is color coded.

I did some reading on G92, and it seems that most say not to use it, just use G54-59 for work coordinates. Is EMC different on this ? Should I set G92 at the machine home ?

[Concealed45]

Any more Idea/suggestions ? I am about to head out and play with the machine in an attempt to keep myself awake all night.

[chester88]

yes reboot EMC and don't use G 92 or add G92.2 to the end of the program.
See if the problem persists.