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SDM-SIO1A Serial Input/Output Module
3.1 Connections
NOTE
6
Table 3-1. SDM address settings
Rotary switch
SDM address
position
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
(1)
(1) Address 'F' is not available as it's the broadcast address. Setting this address will result
in the SDM-SIO1A having an address of '0' not 'F'.
Connection to the SDM-SIO1A is achieved via the 11 terminals arranged along the
top of the unit. The terminals are spring loaded providing an easy and reliable
method of connection. Wires should be stripped 7-9 mm, twisted and inserted in
the round hole whilst opening the clamp by pushing the orange tab down with the
tip of a small flat blade screwdriver. Release the clamp and make sure the clamp
grips the wire rather than the plastic insulation.
If there is a need to insert more than one wire in each terminal, if using multi-
strand wire twist the conductors together first. If using solid wires, either solder
or crimp multiple pairs together before insertion.
When making connections to the datalogger always ensure power to the datalogger
is switched off and connect the ground (G) connection first.
Always use screened cable when connecting to the communications
connections.
.
SerialOpen
command
COMPort
number
0
32
1
33
2
34
3
35
4
36
5
37
6
38
7
39
8
40
9
41
10
42
11
43
12
44
13
45
14
46
15
47
(1)
(1)
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