Delay signal - Function blocks (Control Module)
Hi
I want to send a continuous signal into a block, however, this signal must be delayed. Is there any function block that allows me to do it?
Thanks
I want to send a continuous signal into a block, however, this signal must be delayed. Is there any function block that allows me to do it?
Thanks
Asked 2 years ago
Answers
0
What is the delay and what you scan time?
If the delay divided by the scan is not a very large number, you can create an array of size N = delay/scan, that will work as a queue, i.e. every scan you will push a new value into the array and shift all values by one position, so the oldest value will be the delayed value.
If the delay divided by the scan is not a very large number, you can create an array of size N = delay/scan, that will work as a queue, i.e. every scan you will push a new value into the array and shift all values by one position, so the oldest value will be the delayed value.
Answered 2 years ago
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Its called a FIFO queue - First In, First Out. See the help file for how to build one.
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A Timer, TimerElapsed and a GT (greater than) block could also work. Actually be easier to read/comprehend?
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Hi , Also you could use move function from system then check enable , and in this pin you can connect specific logic condition , when the enable pin is false the value result is frozen and when enable pin is true the value change .
it is easier than create an user defined function block
I hope it could help
Regards
it is easier than create an user defined function block
I hope it could help
Regards
Answered 2 years ago
by ricardo.marrero.a Rank: 157 on 4/11/2019 3:53:28 PM | Like (0) | Report
You could create a specific function block and to put the value into this user defined function block , also you could disable it ( using specific condition) to freeze the value , then when the condition changes to false this condition could freeze tha value , also you could create a function block you could freeze the signal for example using as input to specific block( user defined function block) and disable it , it would freeze the signal and another condition would enable the block again allowing to send the value which it has changed
I hope it can help
Regards
by thomasvgas Rank: 3225 on 4/12/2019 6:20:51 AM | Like (0) | Report
I appreciate your help, I will try it.
Thanks
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