poisonfrog
Member
- Join Date
- Jan 2005
- Posts
- 34
I have a PLC 5/30 with a 1771 IFE A card that I am reading a temperature input on. The temperature sensor is a 4-20 that will read temp from 0-100 celcius. The scaling had a default value of 0 for raw min and 4095 for raw max. My temp appears to be a few degrees off... For applications like this do I just adjust the raw max until temp corresponds to actual? I do not have a clear idea on how scaling works. I have heard you sometimes need to do the math to figure it out. Any help with what the equation is or if I am correct in just adjusting would be appreciated. I would like to be able to pinpoint with a formula if that is possible.
Thanks
Thanks