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September 14th, 2012, 01:49 AM
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Member
 
Join Date: Sep 2012
Location: Ibadan
Posts: 1
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Noise suspected on AB PLC and Controlnet Network
I connected my load cells to a Thermo-Ramsey and from there, I send the reading to an Allen Bradley PLC. My SCADA feeds from the PLC through an LAN connection but communication between my Thermo-Ramsey and PLC is over controlnet.
From installation, I experienced no serious issues until recently. The reading on the thermo-ramsey looked stable while I get a rigorously fluctuating values on the SCADA. I have changed all the cables and ensuring my ground connection is in place. Steady reading from the thermo-ramsey indicates that I have no issue with the load cell. I will appreciate if anyone can be of help here. |
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