Audio International, Inc. MSM2921-0x-x Installation
Document #540186, Rev. IR, 2/2000
Page 9 of 11
3.8
Pinout Assignment Descriptions
P1
P2
Pin #
Description
Pin #
Description
1
+28 VDC
1
+28 VDC Output
2 Ground
2 +28
VDC
Output
3
RS485 Data A
3
+28 VDC Output
4
RS485 Data B
4
+28 VDC Output
5
RS485 Data Bus Shield
5
+28 VDC Output
6
Strap ID 1
6
+28 VDC Output
7
Strap ID 2
7
+28 VDC Output
8
Strap ID 3
8
+28 VDC Output
9
Strap ID Common
9
+28 VDC Output
10
+28 VDC Output
11
+28 VDC Output
12
+28 VDC Output
13
#1 Switch Contact (MOM GND IN)
14
#1 Status Ground Out
15
#2 Switch Contact (MOM GND IN)
16
#2 Status Ground Out
17
#3 Switch Contact (MOM GND IN)
18
#3 Status Ground Out
19
#4 Switch Contact (MOM GND IN)
20
#4 Status Ground Out
21
#5 Switch Contact (MOM GND IN)
22
#5 Status Ground Out
23
#6 Switch Contact (MOM GND IN)
24
#6 Status Ground Out
25
#7 Switch Contact (MOM GND IN)
26
#7 Status Ground Out
27
#8 Switch Contact (MOM GND IN)
28
#8 Status Ground Out
29
#9 Switch Contact (MOM GND IN)
30
#9 Status Ground Out
31
#10 Switch Contact (MOM GND IN)
32
#10 Status Ground Out
33
#11 Switch Contact (MOM GND IN)
34
#11 Status Ground Out
35
#12 Switch Contact (MOM GND IN)
36
#12 Status Ground Out
37
N/C
38
N/C
39
Ground
Output
40
Ground
Output
41
Ground
Output
42
Ground
Output
43
Ground
Output
44
Ground
Output
45
Ground
Output
46
Ground
Output
47
Ground
Output
48
Ground
Output
49
Ground
Output
50
Ground
Output
