By searching informations abut timer I found some documentation about S7-200 timer. I've read that with retentive On Delay Timer (TONR) in s7-200 current value is maintained when the input is off. I found this also "You can use TONR timer to accumulate time for multiple periods of the input ON"
This is similar behavior that AB retentive timer has.
But unfortunately this is not the case for S7-300 plcs.
If I use Retentive On-Delay S5 Timer I get following behavior:
when input goes from 1 to 0 timer continue to couns time. But I need timer which will work for say 10 sec. But if stop button is pressed current value will be maintained and next time start is pressed timer wiill count remaining time.
How can I acomplished this in Step7?
Thank you for your help.
This is similar behavior that AB retentive timer has.
But unfortunately this is not the case for S7-300 plcs.
If I use Retentive On-Delay S5 Timer I get following behavior:
when input goes from 1 to 0 timer continue to couns time. But I need timer which will work for say 10 sec. But if stop button is pressed current value will be maintained and next time start is pressed timer wiill count remaining time.
How can I acomplished this in Step7?
Thank you for your help.