Newbie timer question

Narlin · May 5, 2011

Micrologix 1100 TON timer. I want the Preset to be a user OIT input. Software won't accept a variable for the preset? Does that mean that i have to (for example) put a 1 second timer in and run it over and over again until i have counted to the number of seconds that the user sets in place? Is there a easier way?

narlin

OZEE · May 5, 2011

Couple of options:

1) Your OIT should be able to address the preset -- obviously we don't know what your OIT is, but, the timer preset would be T4:20.pre Make sure you're doing that format correctly.

2) Alternately, can you write to an integer (e.g. N7:20)? If so, just MOV the integer to the preset in your PLC (MOV n7:20 t4:20.pre)

jkerekes · May 5, 2011

Use a move (MOV) instruction to copy the value into the .pre register.

OkiePC · May 5, 2011

It is safer (prevents negative presets and CPU faults) to limit check an integer and move it into the preset with one PLC instruction. It can also help keep your HMI addresses in succession which is more efficient than reading/writing data to/from many different files.

Also, with some HMI software, the .pre suffix on the address might have to be input differently. For example, with Crimson 3.0, you would enter T004:0015.01 to access T4:15.pre and T004:0015.02 to access T4:15.acc

Coincidentally, the .1 and .2 delimiters for counter and timer addresses also works with PanelBuilder32.

Narlin · May 5, 2011

thank you for the several solutions. I can make it work.
narlin

OZEE · May 5, 2011

OkiePC said:
Also, with some HMI software, the .pre suffix on the address might have to be input differently. For example, with Crimson 3.0, you would enter T004:0015.01 to access T4:15.pre and T004:0015.02 to access T4:15.acc

Coincidentally, the .1 and .2 delimiters for counter and timer addresses also works with PanelBuilder32.

Learned something.... Thanks Okie!

OkiePC · May 5, 2011

You're welcome!

I was taking apart someone else's (working) .pba file and saw the .1 reference for his counters' presets a few years ago and thought it was odd. Then working with Crimson, I see they do the same thing too.

celichi · May 5, 2011

OkiePC said:
It is safer (prevents negative presets and CPU faults) to limit check an integer and move it into the preset with one PLC instruction. It can also help keep your HMI addresses in succession which is more efficient than reading/writing data to/from many different files.

Also, with some HMI software, the .pre suffix on the address might have to be input differently. For example, with Crimson 3.0, you would enter T004:0015.01 to access T4:15.pre and T004:0015.02 to access T4:15.acc

Coincidentally, the .1 and .2 delimiters for counter and timer addresses also works with PanelBuilder32.

Good point, and I have also seen / and . interchanged.

Newbie timer question

Narlin

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OZEE

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jkerekes

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OkiePC

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Narlin

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OZEE

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OkiePC

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celichi

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