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How to send Clock Pulse of 2s using the Special Clock Pulse bit
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suhelens:
Hi! A bit new to TriPLC. This may be a simple question but how do I trigger a coil every 2s using the Special bit Clock pulse?
garysdickinson:
There isn't a Special Clock Pulse bit with a period of 2 seconds.
But there is a 1 second period clock named "Clk:1.0s.
You can use a COUNTER to generate a 2 second clock from Clk:1.0s
The trick is to make the COUTNER count up with the use of special function coil, [UpCntr].
A COUNTER with a set value of 1 will count 0,1,0,1... as an up-counter. The contact for the COUTNER will be active on the "0" count time period.
I have attached a screen shot of of the ladder logic to get this to happen.
Good luck,
Gary Dickinson
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