Timed exit while loop. Best way?

DaOne
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04 Jun 2013 04:18 #35229 by DaOne

Timed exit while loop. Best way? was created by DaOne

I would like to have a timed exit in a while loop for my hal tool changer component. I am waiting for an input in a loop and if I don't get it in a few seconds I want it to alarm out with a message. I am wondering the best way to achieve this. Probably a stupid question but I am still a newbie to LinuxCNC.

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BigJohnT
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04 Jun 2013 04:48 - 04 Jun 2013 04:49 #35231 by BigJohnT

Replied by BigJohnT on topic Timed exit while loop. Best way?

The easy way to do a tool changer is with classicladder . My Hardinge CHNC configuration files are here .

JT

Last edit: 04 Jun 2013 04:49 by BigJohnT.

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willburrrr2003
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04 Jun 2013 04:48 #35232 by willburrrr2003

Replied by willburrrr2003 on topic Timed exit while loop. Best way?

I would use classicladder to handle the timing and alarm logic for this.

Regards,

Will

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DaOne
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04 Jun 2013 04:59 #35233 by DaOne

Replied by DaOne on topic Timed exit while loop. Best way?

Is there a benefit to using classicladder? I am OK with C for the most part. I am not a coder by any means however.

I am working on a Hitachi Seiki 3NE-300

My turret sequence....

1)Tool change command given
2)Turret unclamped. (SOL 7 ON)
3)Turret checked to make sure its unclamped. (Limit switch 14 OFF)
4)Hydraulic motor turned on full speed to rotate the turret. (SOL 9 ON)
5)Truth table is read to determine correct tool position for commanded tool.(Limit switches 15-18)
6)Wait for rough alignment cam to switch. (limit switch 19 ON)
7)Slow turret while rough index pin is advanced. (SOL 8 ON)
8)Wait for alignment cam to switch. (limit switch 20 ON)
9)Clamp turret. (SOL 7 OFF)
10)Stop hydraulic motor. (SOL 9 OFF)
11)Check to make sure the turret is clamped (Limit switch 14 ON)
12)Rough index pin is retracted. (SOL 8 OFF)
13)Tool has been changed command returned.

My truth table is...

-----------------------------------------
Tool| 1| 2| 3| 4| 5| 6| 7| 8| 9|10|11|12|
-----------------------------------------
LS15| X| X|  |  | X| X| X| X|  |  | X| X|
-----------------------------------------
LS16|  | X| X| X| X|  |  | X| X| X| X|  |
-----------------------------------------
LS17|  |  |  | X| X| X| X| X| X|  |  |  |
-----------------------------------------
LS18|  |  |  |  |  |  | X| X| X| X| X| X|
-----------------------------------------
X= ON

I was basing off the oracchanger.comp here

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DaOne
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04 Jun 2013 05:42 #35235 by DaOne

Replied by DaOne on topic Timed exit while loop. Best way?

BigJohnT, whats the best way to run your Hardinge setup without having that card? I have a 5i25 paired with a 7i77 and am still a newbie in this hal setup stuff. When I try to run your files without the hardware I get errors because the hardware isn't found. Thanks in advance.

-Wes

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BigJohnT
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04 Jun 2013 05:50 #35236 by BigJohnT

Replied by BigJohnT on topic Timed exit while loop. Best way?

Open a sample configuration with classicladder or create one with stepconf wizard and open the ladder editor. The open my harding.clp file to view it.

JT

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BigJohnT
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04 Jun 2013 05:52 #35237 by BigJohnT

Replied by BigJohnT on topic Timed exit while loop. Best way?

I also have a sample config to show how classicladder works with a tool changer on my web site.

John

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DaOne
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04 Jun 2013 05:59 #35238 by DaOne

Replied by DaOne on topic Timed exit while loop. Best way?

BigJohn, Not sure where on your site the harding.clp file is? I downloaded the EMC2 CHNC Config Files and that file is not in there. Maybe I am looking in the wrong place?

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DaOne
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04 Jun 2013 07:00 #35240 by DaOne

Replied by DaOne on topic Timed exit while loop. Best way?

Found it here...

linuxcnc.org/dapper/emc2/index.php/russi...ssic-ladder?start=10

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DaOne
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04 Jun 2013 07:03 - 04 Jun 2013 07:04 #35241 by DaOne

Replied by DaOne on topic Timed exit while loop. Best way?

Ok, I am looking at the classic ladder. About the only part I can't wrap my head around is the truth table. Maybe someone can translate?

				if(tts1 && !tts2 && !tts3 && !tts4) 
					position = 1;
				else if(tts1 && tts2 && !tts3 && !tts4) 
					position =  2;
				else if(!tts1 && tts2 && !tts3 && !tts4) 
					position =  3;
				else if(!tts1 && tts2 && tts3 && !tts4) 
					position =  4;
				else if(tts1 && tts2 && tts3 && !tts4) 
					position =  5;
				else if(tts1 && !tts2 && tts3 && !tts4) 
					position =  6;
				else if(tts1 && !tts2 && tts3 && tts4) 
					position =  7;
				else if(tts1 && tts2 && tts3 && tts4) 
					position =  8;
				else if(!tts1 && tts2 && tts3 && tts4) 
					position =  9;
				else if(!tts1 && tts2 && !tts3 && tts4) 
					position =  10;
				else if(tts1 && tts2 && !tts3 && tts4) 
					position =  11;
				else if(tts1 && !tts2 && !tts3 && tts4) 
					position =  12;
				else
					position = 0;

Last edit: 04 Jun 2013 07:04 by DaOne.

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