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5.4.2 SDM-SIO4A
5.5
Datalogger Compatibility
6.
Installation
SDM-SIO1A and SDM-SIO4A Serial Input/Output Modules
Main body including base
mounting flange
Height:
Width:
Depth:
Weight:
Mounting centres:
Main body
Height:
Width:
Depth:
Main body including base
mounting flange
Height:
Width:
Depth:
Weight:
Mounting centres:
The SDM-SIO1A is compatible with our CR6-series, CR800-series, CR1000,
CR3000, CR5000, and CR9000X dataloggers. The CR5000 and CR9000X
operating system must be OS 6 or higher.
The SDM-SIO1A is an addressable interface; therefore, before use, its SDM
address needs to be set by rotating the switch on the side of its case using a
screwdriver. If there is only one SDM device, the address can be left at the
default of 0. (Refer to Section 6.1, Mounting
SDM device.) After mounting as close to the datalogger as possible (to
minimize the cable runs), the interface is connected to the datalogger SDM and
power connections. Refer to Section 6.2, Connection and Wiring
further details.
Study the documentation of the serial device you want to connect to the
SDM-SIO1A to determine the most appropriate method of connection for the
application, for example, RS-232 or RS-485/RS-422, half or full duplex.
Generally, RS-485/RS-422 connections are used for cable runs over 50 m (164
ft) if the device supports them. Once decided, connect the wires to the relevant
SDM-SIO1A terminals. Make sure a connection is made between the ground
connections of the two devices. Use the RG terminal on the SDM-SIO1A for
RS-485/422 connections.
Some serial sensors are supported by Campbell Scientific's Short Cut program.
The SDM-SIO1A can be used with those programs simply by selecting the
relevant serial port number to match the SDM-SIO1A (defined by the SDM
address of the SDM-SIO1A, see Section 6.1, Mounting
taken when interpreting any wiring instructions generated by Short Cut to
64 mm (2.52 in)
85 mm (3.35 in)
23 mm (0.91 in)
70 g
76.2 mm (3.0 in)
64 mm (2.51 in)
154 mm (6.06 in)
22 mm (0.86 in)
64 mm (2.52 in)
188 mm (7.40 in)
23 mm (0.91 in)
180 g
177.8 mm (7.0 in)
, if there is more than one
(p. 8)
). Care must be
(p. 8)
, for
(p. 9)
7
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