7.1.1 SDI-12 data logger connections
Connect the wires in the order shown in the following table.
Table 7-1: Wire color, function, and data logger connection
Wire color
Wire function
Data logger connection
White
SDI-12 signal
C, SDI-12, or U configured for SDI-12
1
Red
Power
12V,
Black
Power ground
G
Blue
RS-232 TX
not connected
Yellow
RS-232 RX
not connected
1
U and C terminals are automatically configured by the measurement instruction.
If multiple SDI-12 sensors are connected to a data logger, Campbell Scientific recommends using
separate terminals when possible. However, multiple SDI-12 sensors can connect to the same
data logger control or U terminal. Each must have a unique SDI-12 address. Valid addresses are 0
through 9, a through z, and A through Z.
For CR6 and CR1000X data loggers, triggering conflicts may occur when a companion terminal is
used for a triggering instruction such as
TimerInput()
,
PulseCount()
, or
WaitDigTrig()
.
For example, if this product is connected to C3 on a CR1000X, C4 cannot be used in the
TimerInput()
,
PulseCount()
, or
WaitDigTrig()
instructions.
7.1.2 RS-232 connections
Table 7-2: Wire color, function, and data logger connection
Wire color
Wire function
Data logger connection
Blue
RS-232 TX
C (even numbered)
Yellow
RS-232 RX
C (odd numbered)
Red
Power
12V,
Black
Power ground
G
White
SDI-12 signal
not connected
1
U and C terminals are automatically configured by the measurement instruction.
BaroVUE™10 Digital Barometer
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