B&B Electronics 232CL9R - Manual - Manual (Page 4)

4 232CL9R0812
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
Connection to a passive current loop port requires a 12 VDC power
supply. Use the 470 ohm resistors inside of our converter to create a
20 ma current source, as shown in figure 3.