SLC500 timer move help

mcaruana17 · May 1, 2012

Hello I dont often use allen bradley and need a little help

I am trying to figure out how to take accumulated value of a timer (TON) from one address, store it and send it to another timer (TOF) . So far I used the mov instruction, T4:0.acc , n7:0. Then I moved that information to my TOF preset.

I basically want to energize a pilot light for the X amount of time I hold a PB.

DaveZR2 · May 1, 2012

Do you want to have the light come on while you are holding the PB or after you release the PB?

tomalbright · May 1, 2012

All you need is to toggle the light output with the button press. You don't need a timer to light it.

bernie_carlton · May 1, 2012

it sounds like he wants to press then release a pushbutton. After the pushbutton is released turn on a light for the amount of time the pushbutton was pressed.

tomalbright · May 1, 2012

Maybe. I sense vagueness.

mcaruana17 said:
I basically want to energize a pilot light for the X amount of time I hold a PB.

My suggestion, stay away from TOF. Always. It looks easy, but using it (especially in combination with a TON) is hair-tearing. You can do more with a TON, most of the time.

jrwb4gbm · May 1, 2012

I read the OP statement literally and came to the conclusion that no PLC was needed. Just wire the pushbutton to the pilot light. Push and hold the PB for the X amount of time you need the light to burn, release the PB, light goes out.
It looks like an exercise for learning how to manipulate timer values. Based on bernie's idea, here is one way to do it.
See attached files.

mcaruana17 · May 1, 2012

figured it out

Thanks everyone... i used another TON instruction...Really easy actually...

mcaruana17 · May 1, 2012

if you hold down the PB for X amount of sec...then the light comes on for x amount of secs after you release the PB

mcaruana17 · May 1, 2012

Thanks for everyones help.... im not an allen bradley programmer... Mitsubishi here

joseph_e2 · May 1, 2012

You can also move the accumulator directly to the preset if you like, without using the N7 register.

mcaruana17 · May 1, 2012

thanks...even more simplified

SLC500 timer move help

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