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3. Operating the Decoder Z83/84
3.1 Setting the Digital Address of the Decoder
A unique Digital Address identifies each decoder in the digital system. This allows the central unit to broadcast an
entire set of digital commands to all decoders in the system, and for each decoder to execute only those commands
that match its own internal Digital Address. By default, the Digital Address of each
Z83/84
decoder is set to “01”,
and must be changed if your application requires more than one decoder. It is not recommended to configure two
decoders to the same Digital Address, as it may cause excessive electrical loading of the Central Unit or Booster.
For these reasons, it is important that each decoder is set to its own unique address. The Digital Address of the
Z83/84
may be changed by resetting the eight coding switches located inside the decoder housing, as outlined in the
following procedure.
1.
Remove the top cover of the decoder housing, which is held in place by four cross-head screws.
2.
Once the top cover has been removed, the switchblock is located on the lefthand side of the decoder board as
shown in
Figure 1
below.
3.
Set the coding switches 1-8 in accordance with the settings listed in
Table 1
below to achieve the desired Digital
Address. The Digital Address code is listed in the lefthand column; the righthand column contains the numbers
of the switches that are turned ON for that address.
(Note: A small flat-blade jewelers/hobby screwdriver works
well to slide the switches.)
:
01
-23-5-7-
17
-----67-
33
1---5--8
49
-2-4---8
02
--3-5-7-
18
1-3---7-
34
-2--5--8
50
---4---8
03
1--45-7-
19
-23---7-
35
----5--8
51
1------8
04
-2-45-7-
20
--3---7-
36
1-3--6-8
52
-2-----8
05
---45-7-
21
1--4--7-
37
-23--6-8
53
-------8
06
1---5-7-
22
-2-4--7-
38
--3--6-8
54
1-3-5---
07
-2--5-7-
23
---4--7-
39
1--4-6-8
55
-23-5---
08
----5-7-
24
1-----7-
40
-2-4-6-8
56
--3-5---
09
1-3--67-
25
-2----7-
41
---4-6-8
57
1--45---
10
-23--67-
26
------7-
42
1----6-8
58
-2-45---
11
--3--67-
27
1-3-5--8
43
-2---6-8
59
---45---
12
1--4-67-
28
-23-5--8
44
-----6-8
60
1---5---
13
-2-4-67-
29
--3-5--8
45
1-3----8
61
-2--5---
14
---4-67-
30
1--45--8
46
-23----8
62
----5---
15
1----67-
31
-2-45--8
47
--3----8
63
1-3--6--
16
-2----67-
32
---45--8
48
1--4---8
64
-23--6--
Table 1. Digital Address Switch Settings
Coding Switches:
Switchblock Location:
ON
1 2 3 4 5 6 7 8 9 10 11 12
Digital Address
Mode
Figure 1. Address & Mode Coding Switches
Cover Alignment Marks!
MZE
