CX Programmer FB Timer

[Nortech]

Hi All,
I want to allow an operator to enter two numeric value to an NB HMI (Perhaps to D0 for example). I would like the first value to be a time interval (in seconds) for which an output should be off. The second value will be the time in seconds that the output would be on.

I've tried simply assigning a timer preset to D0 in ladder but the timer goes into error when anything above 9 is entered.

Id ideally like to do this as a function block in ST but not sure how.

Can anyone help me out?

Thanks

See image attached of my ladder

 

[sigmadelta]

The "Set value" for a TIM instruction is in BCD format. You probably have the data type of D11 and D13 as INT on your HMI.

 

[parky]

The only thing I'm aware of is that the timer value is BCD format & I believe it takes two words i.e. D20, D21. I's many years since I used it and did not use variables in timers so it is a bit of a guess try converting a value to BCD.

 

[sigmadelta]

You can use the TIMX instruction if you want a UINT as the data type for the Set value.

 

[Nortech]

You can use the TIMX instruction if you want a UINT as the data type for the Set value.

Thanks, IÂ’ll give this a go. The main thing I want to do is to have the operate enter the time value in seconds or minute rather than 100ms. Therefore, I need to manipulate the value that they type in.

IÂ’ve tried it with counters (P_1s bit increments a counter and the preset of the counter is a variable from the HMI.)

This works from 1-9 but if I type in anything greater than 9 the counter goes into error.

Things like this seem a lot easier with Allen Bradley or even Sysmac....

 

[sigmadelta]

Highlight your counter instruction and press F1 for help. I think you have the same BCD issue.