In-Situ RDO PRO-X Process Optical Dissolved Oxygen Sensor Manual - Manual (Page 18)

800-446-7488 18 www.in-situ.com
Modbus Master with Built-in RS232 (Converter Required)
Signal Color
Ground/Return Black
External Power
(12 VDC, voltage limited by converter)
Red
RS485 (-) Green
RS485 (+) Blue
Cable between converter and master must not exceed 60.96 m
(20 ft.)
Cable between master and slave must not exceed
1219 m (4000 ft.)