Mickey
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Posts posted by Mickey
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Post it here.
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Input Min = 0
Input Max = 1023
Scaled Min = 0
Scaled Max = 16383
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The embedded analog inputs have an address of I:0.4 and I:0.5. (I:0.0 is a digital input)
Also the embedded analog inputs have a resolution of 0-1023 raw data for a 0-10v input. (need to adjust your "SCP" instruction)
The snapshot you show , shows the controller in the "Remote Program" mode. (you did turn it to RUN?)
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WAQ!!
I have seen this with smaller power supplies where the inrush current(of the PLC) causes this.
Can you try a different power supply?
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From the manual..
QuoteIMPORTANT You cannot use indirect addressing with: S, MG, PD, RTC, HSC, PTOX, PWMX, STI, EII, BHI, MMI, CS, IOS, and DLS files.
Are you trying?
Post your .rss file if you can.
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Old 1747-UIC? Did not know there was an old and new.
Is it a 1747-PIC?
Can you post a picture of it.
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7 minutes ago, pcmccartney1 said:Seems he would have a fault on the module or the PLC5 were the wrong module be installed in the slot and differ from the program?
But as the others have said, those terminals are not used for the IAD.
FYI, The PLC5's do not required a I/O configuration. It's documentation only if it's there at all.
I/O addressing would certainly be a problem.
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Are you sure it's not a 1771-OAD? As it does use those terminals.
http://literature.rockwellautomation.com/idc/groups/literature/documents/in/1771-in024_-en-p.pdf
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3 hours ago, Nancygogogo said:Awesome~ Thanks, I got the number I want!!!
You're welcome
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1 hour ago, Nancygogogo said:Hi Mickey, I did use the same filter equation as yours, and I use 0.1 for the constant, but the output still not stable, as it said in the attached. The smaller the number the more damping. Ohhhh, so probably I can use 0.0001 as my constant? Cause before I thought 0.1 is the smallest number I could use....
You can, but that is a lot of damping.
Just play until it helps.
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Your logic should work. Why is this a user input?
I agree with PLCMentor though, I would use a deadband logic. It does not have to be on at 20 off at 25 maybe on at 18 off at 22 your system will dictate the settings.
As others have pointed out why not correct the noise issue, or apply a filter (see txt)
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On 10/28/2015 at 5:22 AM, hboyer90 said:On an unrelated, I want to know where this horrifying saying come from. Who skins cats? How many ways can there be? So many questions.
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39 minutes ago, Joe E. said:I would expect "Engineering Units" to be equal to "Engineering Units x1".
Yes
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Sorry, I should have said "Engineering Units x 1"( my bad).
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Then use the "Engineering Units x 10"(data format), use a math instruction to divide the raw data by 10 with a destination of a floating point data type.
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Yo have channel 0 configured for "Percent Value" which has an implied decimal point of 2 places, so your read is 17.5 % full scale.
You can change that to Engineering Unit X 1 to get a direct temperature reading.Or engineering units x 10 to get a direct temperature reading with an implied decimal point to 1 place.
See pdf
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Execution of a "MOV" instruction occurs immediately the rung is scanned (the rung must be true of course).
You can take action on the very next rung or a branch below the "MOV" instruction.
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QuoteAlso, I read the file you send to me, I was wondering how should I achieve this equation, should I use the Math function?
Yes
"SUB"
"MUL"
"ADD"
should do it, play with the constant until you get what you want.
QuoteAnd I saw there is a PID function, is this function necessary to be used for my problem
No, this instruction is for control.
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Why is it "jumpy", noise? You might want to explore that first.
You could use a filter, see txt below.
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Looks like time to replace the screen. Not sure where you would get one though.
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Error "31" is a "Stuck Key Test"
Does you unit have a keypad?
Quote31 Stuck key test
What is the complete catalog number of your PV?
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Can I wire up Isolated Analog Output card 0-10V to Omron VFD?
in Allen Bradley / Rockwell Automation
Posted · Edited by Mickey
I am not so sure. It looks like the VFD is trying to power the potentiometer.
Is that 10vdc on the VFD side internal? Put a meter on it to see.
I guess connecting to "FV (+)" and "SC"(-) should work.