The LOGO! basic module has four 0 - 10 V analog inputs. This video shows how to convert and program for 4 - 20 mA signals.
0:00 - Intro
0:48 - Using a pot for setpoint adjustment on 24 V supply
1:59 - Industrial analog standards 0 - 10 V and 4 - 20 mA
2:34 - 4 - 20 mA analog inputs
4:41 - Analog signal from the IO simulator
5:07 - Pressure transducer 4 - 20 mA example
5:40 - Simple method for calculating the Analog Amplifier offset
6:35 - Message texts, values, scaling and bar graph
Check out the playlists for more videos on the LOGO! hardware and software.