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Problem using scale function FC105

Created by: neman at: 8/18/2020 1:14 PM (19 Replies)

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8/18/2020 1:14 PM	Rate (0)
neman Posts: 25 Rating: (0)	Hello, So i tried using the fc105 function. The transmitter is showing 4 mA and that should be zero flow but in simatic manager it is showing 498.698. I've set min and max to be 0 and 1000 l/min respectively and have set it up the same way in the function. Also to note I'm using a voltage input card and a resistor at the end of cables to get a voltage reading. At 4 mA the reading at the end of the resistor is 0.99 V when measured with a multimeter. Is it an issue that it's 0.99 and not 1 and if not what could be the issue? Thank you for your help. Attachment Capture.PNG (277 Downloads)
neman Posts: 25 Rating: (0)
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8/18/2020 2:01 PM	Rate (0)
jacek d Platinum Expert Joined: 9/23/2005 Last visit: 11/18/2024 Posts: 4795 Rating: (733)	The issue is that it is not 0. And it should be. I missed another issue. Switch off BIPOLAR.
	Last edited by: jacek d at: 08/18/2020 14:21:01 Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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8/18/2020 2:15 PM	Rate (0)
neman Posts: 25 Rating: (0)	Could you explain? I don't quite understand.
neman Posts: 25 Rating: (0)	Last edited by: neman at: 08/18/2020 14:16:47
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8/18/2020 2:23 PM	Rate (0)
jacek d Platinum Expert Joined: 9/23/2005 Last visit: 11/18/2024 Posts: 4795 Rating: (733)	BTW, what is a measuring range set for this input?
	Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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8/18/2020 2:24 PM	Rate (0)
neman Posts: 25 Rating: (0)	It's 1-5 V. 0 to 1000 l/min
neman Posts: 25 Rating: (0)	Last edited by: neman at: 08/18/2020 14:35:17
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8/18/2020 2:24 PM	Rate (0)
ixo65 Grandmaster Joined: 12/18/2014 Last visit: 11/19/2024 Posts: 34240 Rating: (4263)	If your sensor gives a output signal 4-20 mA then have you not set the input "Bipolar" to high. Then it must be low.

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8/18/2020 2:33 PM	Rate (0)
neman Posts: 25 Rating: (0)	How do I set the input BIPOLAR? I'm pretty new to this.
neman Posts: 25 Rating: (0)
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8/18/2020 2:42 PM	Rate (0)
Ste39 Platinum Member Joined: 1/21/2013 Last visit: 10/23/2024 Posts: 4620 Rating: (708)	neman How do I set the input BIPOLAR? I'm pretty new to this. Hello, write FALSE at input BIPOLAR

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8/18/2020 2:43 PM	Rate (0)
neman Posts: 25 Rating: (0)	It doesn't let me do that. It shows red letters.
neman Posts: 25 Rating: (0)
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8/18/2020 2:50 PM	Rate (0)
Ste39 Platinum Member Joined: 1/21/2013 Last visit: 10/23/2024 Posts: 4620 Rating: (708)	neman It doesn't let me do that. It shows red letters. Sorry, you are in LAD, put a normally open contact with flag that is false

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