Tank level set up 4-20ma

[gazza29]

Looking for best way to set up a tank level monitor on hmi and ladder in unilogic using 4-20ma any examples out there new to all this 

 

Gary 

[Simon]

Simple Tank Monitor.ulpr

Hi Gary, try the attached.  The setup is quite simple, this one allows you to enter the level range from the front screen of the HMI, rather than hardcoding it into the logic of the PLC.

Hope it helps,

Simon

[pascal]

just found out :

in properties of your 4..20mA input, you can determine the values of 4 and 20 mA -> if in your setup 4mA = 0% and 20mA=100%, then you just put these numbers in the properties, so unilogic itself is calculating everything for you 😁

in my example -> 4mA = 4900 and 20mA=1400..... (measuring the filling height seen from the top of a tank - my sensor returns  not 4..20mA but 20..4mA)