I need someone help to write a ladder logic in PLC 5 to take an average of 8 input values within 2hrs of an analogue input connected to channel one (N27:50). The final average reading value need to be moved to N10:5 for display purpose.
Writing ladder diagram logic to take average value.
- Thread starter alhasas96
- Start date
Mark Snodgrass
Member
I charge $100 for the first rung of code, then $50 for each additional line. It should only take me 1000 lines of code to do what you want.
JordanCClark
Lifetime Supporting Member
Already talked about here:
http://www.plctalk.net/qanda/showthread.php?t=19066
Also, the Enhanced PLC-5 processors have an Average File instruction. Covered in the Instruction Set Reference.
http://www.plctalk.net/qanda/showthread.php?t=19066
Also, the Enhanced PLC-5 processors have an Average File instruction. Covered in the Instruction Set Reference.
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Simple. Set up a self-resetting timer with a preset of 15 minutes. Every time the timer times out, add the value of N27:50 to an available register to hold the accumulation values, and increment a counter with a preset of 8. When the counter finishes, Divide the number in that accumulation register by the Preset of your counter, and place the results in N10:5. Also, reset the counter and move a zero into the accumulation register.
TConnolly
Lifetime Supporting Member
See this thread for another program showing how to use a FIFO and a circular queue to compute an average.
http://www.plctalk.net/qanda/showthread.php?p=260919#post260919
http://www.plctalk.net/qanda/showthread.php?p=260919#post260919
He doesn't need a rolling or circular average.
His assignment is to take 8 readings only, assumed to be equally spaced over 2 hours, then average the 8 readings into N10:5 = the "final average".
I think if you send him off to read up about rolling averages you'll just confuse him further.
Holy thread resurrection batman. Daba, the post you are replying to is at least 7 years old. Thread resurrected by a new user asking for homework assistance without specifying any details.
Coljoy, may I suggest you start a new thread for your question, then specify the details of your assignment and show us what you have so far. Plenty of people willing to help you out here, but we won't do your homework for you. You will most likely be asked to do the majority of thinking, no point in us doing the leg work as you will learning nothing from that.
drbitboy
Lifetime Supporting Member
1.
Code:
IN OUT
---] [---( )---
Code:
OneSecondCounterBit OnsStorage 1sOneShot
--------] [-------------+-------]/[----------( )------+---
| |
| OnsStorage |
+-------( )-------------------+
1sOneShot OUT OUT
---+----] [------]/[---+---( )---
| |
| 1sOneShot OUT |
+----]/[------] [---+GUILTY AS CHARGED !
Although in my defense I should have said that the colour scheme for the post headers is not a good combination for me. I've never thought to ask for a "better" combination, which might be "worse" for others ....
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your 100% right I have 3 out of 5 questions done I will make an attempt at q4 but q5 is something we just glanced over and with Covid it was all done from home our lecturer advice was for q5 was "remember we talked about latching that's it lol im in a class of 14 and we are all stumped
Holy thread resurrection batman. Daba, the post you are replying to is at least 7 years old. Thread resurrected by a new user asking for homework assistance without specifying any details.
Coljoy, may I suggest you start a new thread for your question, then specify the details of your assignment and show us what you have so far. Plenty of people willing to help you out here, but we won't do your homework for you. You will most likely be asked to do the majority of thinking, no point in us doing the leg work as you will learning nothing from that.
504bloke
Lifetime Supporting Member
GUILTY AS CHARGED !
Although in my defense I should have said that the colour scheme for the post headers is not a good combination for me. I've never thought to ask for a "better" combination, which might be "worse" for others ....
Its an age thing
504bloke
Lifetime Supporting Member
A small covid example......
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