Need a Subroutine?

UrbanSugarmaker · Jan 3, 2016

Hello, I have a CLICK PLC and my main program is fine. It starts and stops two motors. I want the ability to break out of the main program and manually start and stop the feed pump with the start switch. In this case, the motor turns on when the switch is pressed, and off when the switch is released. I can't seem to figure out how to make the program do this. I created the subroutine for it but it did not work. Thanks.

Doug-P · Jan 3, 2016

Did you include a CALL instruction to invoke the subroutine? It won't run automatically.

jrwb4gbm · Jan 3, 2016

Just zip and post (attach) your program, I'm sure someone can figure it out for you.

UrbanSugarmaker · Jan 3, 2016

Yes, I did include a call and it was simultaneously pressing both stop switches. I will attach the program, but please note it is not complete. I deleted some contacts to do some testing. For example, I have motor overloads, but they are not currently in the program. This is temporary.

bernie_carlton · Jan 4, 2016

Simply branch around the conditions in rung 3 with your alternate conditions --- -][- X1, -]\[- X2, -]\[- X3

UrbanSugarmaker · Jan 4, 2016

bernie_carlton said:
Simply branch around the conditions in rung 3 with your alternate conditions --- -][- X1, -]\[- X2, -]\[- X3

Do you mean one big branch? When the Feed pump Start is pressed the whole line of code should execute. How would a branch prevent that from happening? Once the Line 3 is executed, Lines 4 and 5 will execute assuming all conditions are met.

osmanmom · Jan 4, 2016

maybe you no need to use subroutine

kwade · Jan 4, 2016

Did any of this help?
https://forum.automationdirect.com/showthread.php?t=15008

bernie_carlton · Jan 4, 2016

Do you mean one big branch? When the Feed pump Start is pressed the whole line of code should execute. How would a branch prevent that from happening? Once the Line 3 is executed, Lines 4 and 5 will execute assuming all conditions are met.

The stops being pressed would activate only the one branch. To finish release the 'start' then the 'stops'. As long as the start is released first the original part of the rung will not fire.

Oh yes, also add NC of stops in line on rung 4. You are right.

UrbanSugarmaker · Jan 4, 2016

bernie_carlton said:
The stops being pressed would activate only the one branch. To finish release the 'start' then the 'stops'. As long as the start is released first the original part of the rung will not fire.

Oh yes, also add NC of stops in line on rung 4. You are right.

I think I need to see a picture of what you mean Bernie

kwade said:
Did any of this help?
https://forum.automationdirect.com/showthread.php?t=15008

Kwade, I will try this. Thanks for posting the link.

bernie_carlton · Jan 4, 2016

Zipped project attached. I opted to use separate bits to simplify things.

UrbanSugarmaker · Jan 4, 2016

Thanks guys. I now have two different ways to do what I want. I'll let you know which way I go and post the program here again for you to see.

Need a Subroutine?

UrbanSugarmaker

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Doug-P

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jrwb4gbm

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UrbanSugarmaker

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bernie_carlton

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UrbanSugarmaker

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osmanmom

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kwade

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bernie_carlton

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UrbanSugarmaker

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bernie_carlton

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UrbanSugarmaker

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