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Ioanvr
Junior
Joined: 10 Sep 2015
Posts: 1
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 Posted: 10/09/2015 15:06 Post subject: False signal |
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Hi all,
I have a problem with a SICK light barrier. The barrier should read a level, but when the physical level is 0, I see in SCADA a level of 9%. The light barrier sends the signal on 4-20 mA and is connected to a S7 module (6ES7 134-4GB11-0AB0). What could be the problem? |
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Carlos
Member
Joined: 07 Jan 2012
Posts: 138
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| Posted: 10/09/2015 21:28 Post subject: |
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Are you sure you have 4 mA at 0 level ?
I am not an expert on siemens but you need to use the function FC105 or/and FC106 in the analog input.
Or fix the scale at the input of scada.
best regards
zc |
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