good afternoon,everyone,for the JSR INSTRUCTION

[automation.robotics]

I am trying to use the JSR instruction to control 2 defferent sequences, it requires sequence 1 continously running when selector switch is on after start button is pressed.
and sequence 2 will continously running when selector swithc is off after start button is pressed.
but,changing the selector switch after sequence starts will have no effect.
my question is that how to achieve the requirement of changing the selector switch after sequence starts will have no effect when using the JSR instruction?

 

[PeterW]

You could have two bits enable-jsr1 and enable-jsr2.

selector switch and start and not enable-jsr2 turns on enable-jsr1, which retains itself until either sequence is complete or stop.

not selector switch and start and not enable-jsr1 turns on enable-jsr2, which retains itself until either sequence is complete or stop.



edit: 1st post with new hometown and country

 

[504bloke]

What PLC?

 

[automation.robotics]

What PLC?

AB LOGIX500

 

[geniusintraining]

edit: 1st post with new hometown and country

Welcome to the other side of the pond Peter , remember we drive on the right side of the road

 

[geniusintraining]

Try this (or something like it), just remember that you need to unlatch them at some point

 

[504bloke]

My Feeble Attempt.

To Stop the Sequence (SUB one or SUB Two from running you will need to unlatch B3:0/0 in rung 0 of MAIN.

 

[Kim Gold]

Also keep in mind that when using JSR instructions that if you turn an output on or off it will remain in that state while subroutine is not being scanned.


Kim

 

[Lancie1]

504Bloke, Advance to Go and collect your salary.

GIT, go directly to jail! Your program does not seem to prevent the selector switch from switching between the two routines.

 

[automation.robotics]

the way you said here, I tried, it seems that only can acheive the requirement of one sequence, that other sequence rquirement can not get it.

 

[geniusintraining]

Try this (or something like it)

My get out of jail card is bold ....


must have disclaimers


EDIT: I read it again, I still dont see where the OP says I only want one scan to run at a time????...

 

[Lancie1]

Automation,

Did you do it like PeterW and 504Bloke showed you? I think it should work. Which requirement could you not get?

 

[504bloke]

504Bloke, Advance to Go and collect your salary. GIT, go directly to jail! Your program does not seem to prevent the selector switch from switching between the two routines.

I thought GIT had put that in as a deliberate mistake

I didnt feel it my place to knock his confidence

EDIT for GIT: "changing the selector switch after sequence starts will have no effect."

 

[504bloke]

the way you said here, I tried, it seems that only can acheive the requirement of one sequence, that other sequence rquirement can not get it.

I didnt test mine but cannot see why it shouldnt work......

What doesnt work exactly ?

 

[504bloke]

edit: 1st post with new hometown and country

Whats it like so far over there ?