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Mit Selihc

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Is there such thing as a RTC based 'stop-start' function in Unistream?


I intend to have a simple way of controlling lights based on time.


So, say from 10:00am until 3:00pm, I want the lights to be true.


I know there is a similar function in Visilogic, I'm just getting to grips with Unistream, so it's taking me a while to update myself!


I guess another way could be to store the RTC time in a INT16 tag, and have a HMI entered numeric as your 'stop-start' condition. Then use a 'compare- Equals' FB to compare the RTC time and the user entered time.


In my thinking, this will provide a 'set' 'reset' condition for the light output.


Let me know your thoughts!

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Yes, absolutely!


There is a schedule function that can be found within the RTC toolbox menu. When a schedule data tag is set up it creates a struct for start/end times for the year, month, day of month, day of week, and starting & ending time (hour, minute, second). The schedule function block will then pass power when the RTC conditions are met from the tags within the struct.

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