Installation guide

Specifications 31
5.7 – Expansion I/O Board
The Expansion I/O-BCD board has been designed to
interface to BCD switches and/or to an OPTO 22 mod-
ule rack. There are two ports on each board and each
port has 24 bi-direction I/O points. The odd pins 1-47 on
the 50-pin header are signal pins. The even pins 2-50 are
signal grounds.
If the MX2000 controller is an MX2 or MX6 the first
expansion I/O board is on the Power supply board and
there are only 24 I/O points available (100-124). Up to 4
boards can be interfaced to an MX2000-8 controller.
The ID for each board is selected using two dip
switches.
5.7.1 – EXIN/EXOUT assignments
The EXIN and EXOUT commands can be used to access
the expansion board I/O. Up to 48 I/O pins can be ac-
cessed with these commands. The pin assignment and
connector assignment for each I/O point is depicted in
the following table.
I/O Pin Connector I/O Pin Connector
B00 47 Top B24 47 Bottom
B01 45 Top B25 45 Bottom
B02 43 Top B26 43 Bottom
B03 41 Top B27 41 Bottom
B04 39 Top B28 39 Bottom
B05 37 Top B29 37 Bottom
B06 35 Top B30 35 Bottom
B07 33 Top B31 33 Bottom
B08 31 Top B32 31 Bottom
B09 29 Top B33 29 Bottom
B10 27 Top B34 27 Bottom
B11 25 Top B35 25 Bottom
B12 23 Top B36 23 Bottom
B13 21 Top B37 21 Bottom
B14 19 Top B38 19 Bottom
B15 17 Top B39 17 Bottom
B16 15 Top B40 15 Bottom
B17 13 Top B41 13 Bottom
B18 11 Top B42 11 Bottom
B19 9 Top B43 9 Bottom
B20 7 Top B44 7 Bottom
B21 5 Top B45 5 Bottom
B22 3 Top B46 3 Bottom
B23 1 Top B47 1 Bottom
Where: “B” is the board number, 1 through 4.
49
47
45
43
41
39
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
12
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
Expansion I/O-BCD Connector PinOuts
I/O 01/25
I/O 02/26
I/O 00/24
Not Used
I/O 03/27
I/O 04/28
I/O 05/29
I/O 06/30
I/O 07/31
I/O 08/32
I/O 09/33
I/O 10/34
I/O 11/35
I/O 12/36
I/O 13/37
I/O 14/38
I/O 15/39
I/O 16/40
I/O 17/41
I/O 18/42
I/O 19/43
I/O 20/44
I/O 21/45
I/O 22/46
I/O 23/47
Signal
Common