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A peripheral output can not monitered.

Created by: Amit S at: 8/28/2009 7:35 PM (6 Replies)

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8/28/2009 7:35 PM	Rate (0)
Amit S Posts: 2 Rating: (0)	Dear all, I have a problem, some time i can not able to check the analog output in software and when i go to check the same output in variable table it shows peripheral output can not be monitered. can any one help me. Amit S
Amit S Posts: 2 Rating: (0)
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8/28/2009 9:23 PM	Rate (0)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 9/30/2023 Posts: 2989 Rating: (1034)	Hello Amit S I'm afraid neither VAT monitoring nor "Load" access in the logic is possible with peripheral Outputs (i.e PQB, PQW or PQD). What you can do though is this: Check if your Ananlogue output addresses are inside the PIQ (Process Image Outputs). The (default) size of the PIQ depends on the CPU that you use (its sizecan be found in the the technical spec of teh CPU) and can be changed for most CPU's. If they are either already inside the PIQ or you can increase the PIQ to have them inside, then you can change your logic to write to a QW instead of a PQW and will be able to monitor its value in a VAT. Alternatively, write the Analogue Output value in your logic first to a MW or DBW and then copy it tfrom there to aPQW (you cna the nmonitor the MW or DBW, this solution ishowever a bit "messy" in my humble opinion). I hope this helps
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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8/31/2009 11:26 PM	Rate (0)
Amit S Posts: 2 Rating: (0)	Dear fritz, At first thanx for reply soon. Analogueoutput address which i am not able to find is defined in Function block header with some nominclature, and i can see the value of the same in program at the time of monitering but not in VAT. I like to ask that the name of the same will defined any where in FC or any where else (i.e. #speed = PQW 170) this i am not able to see.FC is protected and may be the same declaration should be there. Can you help me to unprotect the FC to check the nominclature. Because some time we are not able to understand the nominclature and to check the problem read the whole software to know the exect address. Amit S
Amit S Posts: 2 Rating: (0)
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7/17/2013 6:58 AM	Rate (0)
ashishm Bronze Member Joined: 2/1/2011 Last visit: 9/13/2023 Posts: 186 Rating: (4)	Dear Amit S, As i understand you want to see the value of peripheral output which is declared at some FC called in program. If this is the case than fritz already tol you to put some memory address that can be DB or memory word and move that memory word to output at next network and than you can monitor.

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7/17/2013 7:14 AM	Rate (0)
DS SURESH KUMAR Bronze Member Joined: 4/17/2012 Last visit: 9/7/2023 Posts: 474 Rating: (10)	ashishm Dear Amit S, As i understand you want to see the value of peripheral output which is declared at some FC called in program. If this is the case than fritz already tol you to put some memory address that can be DB or memory word and move that memory word to output at next network and than you can monitor. Hai, Otherwise you can give like this Example: QW256 instead of PQW 256 It will show the analoge ouput value in DEC or HEX

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7/17/2013 7:18 AM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 7/12/2023 Posts: 10221 Rating: (1177)	DS SURESH KUMAR ...Otherwise you can give like this Example: QW256 instead of PQW 256 In order to work there is a precondition. That is not valid in all cases. Try it. Best regards, Hristo Mihalev

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7/17/2013 8:01 AM	Rate (0)
@shish Bronze Member Joined: 9/16/2011 Last visit: 9/10/2022 Posts: 291 Rating: (6)	DS SURESH KUMAR ashishm Dear Amit S, As i understand you want to see the value of peripheral output which is declared at some FC called in program. If this is the case than fritz already tol you to put some memory address that can be DB or memory word and move that memory word to output at next network and than you can monitor. Hai, Otherwise you can give like this Example: QW256 instead of PQW 256 It will show the analoge ouput value in DEC or HEX Try what Mr. Suresh has said and revert back !
	Reg, @shish --- If satisfied with reply, Rate it ! If problem solved, hit THANK !
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