Robustel R1520 User Guide
RT056_UG_R1520_v.1.0.3 Dec. 25, 2021 25/159
2.14 AI Interface
R1520 supports one channel AI interface for analog signal voltage and current measurement;
1. 0 ~ 24V voltage measurement, wiring as shown below:
2. 4 ~ 20mA current signal measurement requires an external parallel 1.2kohm resistor, wiring as shown below: