Re:Hardinge CHNC 1 Lathe
10 Apr 2010 13:27 - 10 Apr 2010 13:30 #2564
by BigJohnT
Replied by BigJohnT on topic Re:Hardinge CHNC 1 Lathe
I've made a lot of progress on the CHNC and have made a few parts and some not so good parts as a learning experience. While scrounging through a machine graveyard I found a control panel with a bunch of AB selector switches in it. To my suprise there were three 4-position selectors. I installed them near the MPG and used the original legend plates even though I don't have a Y axis... this setup works so much better for quickly moving the turret to a touch off position. The only thing that does not work in this photo is the Feed Override Knob as it is a binary type and I can't figure out how to use that with EMC2. It sure would be nice to have it working...
John
John
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11 Apr 2010 07:34 #2570
by bigalex
Replied by bigalex on topic Re:Hardinge CHNC 1 Lathe
Hello John, what do yuo mean when you say this
"The only thing that does not work in this photo is the Feed Override Knob as it is a binary type and I can't figure out how to use that with EMC2".
Is the Feed Override Knob digitally coded in BCD or GRAY ?
If is coded as I say maybe you can decode it with ClassicLadder and manipulate the value for the use into an hal file,
bigalex
"The only thing that does not work in this photo is the Feed Override Knob as it is a binary type and I can't figure out how to use that with EMC2".
Is the Feed Override Knob digitally coded in BCD or GRAY ?
If is coded as I say maybe you can decode it with ClassicLadder and manipulate the value for the use into an hal file,
bigalex
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12 Apr 2010 06:43 #2583
by bigalex
Replied by bigalex on topic Re:Hardinge CHNC 1 Lathe
Hi John,
please can you explain me in detail what kind of digital knob are you using and what do you write inside ClassicLadder and hal file ?
What kind of halui components are you using ?
Another question what do you mean for "ClassicLadder magic" ?
bigalex
please can you explain me in detail what kind of digital knob are you using and what do you write inside ClassicLadder and hal file ?
What kind of halui components are you using ?
Another question what do you mean for "ClassicLadder magic" ?
bigalex
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12 Apr 2010 12:42 - 14 Apr 2010 06:52 #2592
by bigalex
Replied by bigalex on topic Re:Hardinge CHNC 1 Lathe
Hi John
why don't you take the position of your feed ovverride knob p.e. 4 (coded from BCD = 40% of the max speed) and multiply it for 100 so you will have 400 and put this value into a register S32 and pass it to EMC2 input.
After that into the HAL file you take the input register value from ClassicLadder , convert it to float (real) and multiply it by 0.001.
In this case you will have for the position 12 (max feed override) a value in ClassicLadder format s32=1200 (12*100), so the Hal file will compute the value as 1200 (ClassicLadder s32) --> 1200.0 (float using conv_s32_float) --> 1200.0*0.001 (using mult2) --> 1.2 to use to the HALUI component.
I hope this can help you.
bigalex
why don't you take the position of your feed ovverride knob p.e. 4 (coded from BCD = 40% of the max speed) and multiply it for 100 so you will have 400 and put this value into a register S32 and pass it to EMC2 input.
After that into the HAL file you take the input register value from ClassicLadder , convert it to float (real) and multiply it by 0.001.
In this case you will have for the position 12 (max feed override) a value in ClassicLadder format s32=1200 (12*100), so the Hal file will compute the value as 1200 (ClassicLadder s32) --> 1200.0 (float using conv_s32_float) --> 1200.0*0.001 (using mult2) --> 1.2 to use to the HALUI component.
I hope this can help you.
bigalex
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