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2
USER GUIDE
ZC Series Wall Controllers
RS-232
Diagram C
4
+V
3
2
1
IN
OUT
ZC-4
Diagram D
Switches SW1-SW4 correspond to switch inputs 1-4 on the ZC-4’s
EuroBlock connector. Each switch connected to the ZC-4 must
be a Single-Pole Double-Throw (SPDT). One pole of each switch
should be connected to the ground reference on the ZC-4’s
EuroBlock connector while the other pole should be connected
to the +V reference. Because there are four switch inputs, there
are 16 possible switch combinations. In the chart above, a “0”
corresponds to a switch connected to the ground reference; a “1” corresponds to the switch being connected to
the +V reference. None of the poles should be left hanging but should either be connected to +V or ground.
ZC-4 Binary Appnotes
SW4
SW3
SW2
SW1
Hex
Setting
0
0
0
0
0
0
0
0
0
1
1
1
0
0
1
0
2
2
0
0
1
1
3
3
0
1
0
0
4
4
0
1
0
1
5
5
0
1
1
0
6
6
0
1
1
1
7
7
1
0
0
0
8
8
1
0
0
1
9
9
1
0
1
0
A
10
1
0
1
1
B
11
1
1
0
0
C
12
1
1
0
1
D
13
1
1
1
0
E
14
1
1
1
1
F
15
