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Hello I am working on a project for college.
I am hoping to have a motor come on for 2 seconds four times throughout the day. Just wondeirng can anyone help me as too which function I should use in the program. Was thinking of using a TOW command with a timer in series but can seem to get the TOW command to work. Its for a micro 800 plc


Any help appreciate

Do you have a model of Micro 800 controller that has an Real Time Clock option module fitted to it, or are you going to use ordinary Timers to keep track of time ?

The hardest part of most automation projects is defining the actual operational requirements, so let's do that first.

Will the times that the motor turns on be fixed, or variable ?

Are these times specific (like 4:20 PM every day) or are they an interval of every so many hours and minutes ?

Hello yes it will be at the same times every day. There is an actual clock on the plc. When the clock value is true I want it to stay on for a few seconds and then off again.

The particular one I am using is 2080 Micro810® Controller.
I am hoping to do it all in ladder

It can be seen in this link http://ab.rockwellautomation.com/Programmable-Controllers/Micro810

cheers