Campbell MetSENS Series - Installation; Wiring; RS-485 Wiring; SDI-12 Wiring

6. Installation
If you are programming your data logger with Short Cut, skip Wiring (p. 10) and Programming (p.
11). Short Cut does this work for you. See QuickStart (p. 2) for a tutorial.
6.1 Wiring
If you are programming your data logger with Short Cut, skip this section. Short Cut does this
work for you. See QuickStart (p. 2) for a tutorial.
6.1.1 RS-485 wiring
The RS-485 output can be directly read by a MeteoPV, CR6, CR1000X, or Modbus RTU RS-485
network (Table 6-1 [p. 10]). Other Campbell Scientific data loggers can use an MD485 multidrop
interface to read the RS-485 output. Refer to the MD485 manual for more information. The
Modbus address must be unique and may need to be changed if another sensor on the bus has
the same address. Contact Campbell Scientific technical support for assistance changing MB
address.
Table 6-1: RS-485 pin-out, wire color, function, and data logger connection
Wire color Pin-out Function Data logger
1
connection
Green 5, 7 RS-485 A- A-, C (odd)
White 4, 6 RS-485 B+ B+, C (even)
Red 2 12 VDC 12V
Black 3, 1 Power and signal ground G
Clear NC Shield G
1
Assumes the sensor directly connects to the data logger.
6.1.2 SDI-12 wiring
Table 6-2 (p. 11) provides wiring and pin-out information when using a MetSENS-series sensor
with an SDI-12 output.
MetSENS-Series Compact Weather Sensors 10