Hi,
I am using an Allen Bradley Compactlogix PLC and polling data from it using KEPServerEX (OPC client). I have been logging various 4-20mA temperature sensors and found large jumps in the data. In one case the sensor usually reads around 83F, but sometimes jumps to 101F. Another sensor has been reading in the 70's and has been jumping as far down as 0F. The readings are clearly wrong, but I'm not sure how to eliminate these spikes.
Thank you,
Josh
I am using an Allen Bradley Compactlogix PLC and polling data from it using KEPServerEX (OPC client). I have been logging various 4-20mA temperature sensors and found large jumps in the data. In one case the sensor usually reads around 83F, but sometimes jumps to 101F. Another sensor has been reading in the 70's and has been jumping as far down as 0F. The readings are clearly wrong, but I'm not sure how to eliminate these spikes.
Thank you,
Josh