6
IM 730-0
The two portions come plugged together and look like a single part. However, they can be
separated at the middle by gently pulling them apart. Connect the wiring (that has been
stripped of insulation by about 1/3-inch) to the SG1 female plug portion. Insert the wires into
the proper screw-terminals and tighten the connections with a small flat-blade screwdriver
(see
Figure 9). Make sure that the wiring connections aren't shorted and that they are tight.
Address Switch
The Address Switch (S1) must be field-configured on each MicroTech II N2 communication module
to a unique address, so that it can be located and addressed when wired into the network. The system
integrator usually pre-assigns an address to each module. The available range of possible addresses
using the binary switches is 1 through 253.
Figure 3. Address switch (S1)
Dip switch settings and how they work
When a switch is in the up (open) position, its value is 0. So when all the switches are in the up there
is no module address. When switches are set in the down (closed) position, their individual values
are shown in Figure 4 below.
Figure 4. Dip switch values (when closed)
Switch #
Value
Number when closed
1
2 to the zero power
1
2
2 to the 1
st
power
2
3
2 to the 2
nd
power
4
4
2 to the 3
rd
power
8
5
2 to the 4
th
power
16
6
2 to the 5
th
power
32
7
2 to the 6
th
power
64
8
2 to the 7
th
power
128
Figure 5 shows an example of a typical address setting. The digital switch positions as read from left
to right are 00110010. This provides an address of 76 as illustrated below.
Figure 5. Address switch (S1) set to example
(0 + 0 + 4 + 8 + 0 +0 +64 +0 =76)
12-Pin Header
The 12-pin header, J1, connects the unit-controller Unit Controller board to the MicroTech II N2
Open communication module through the bottom side of the printed-circuit board.
