14 |
P a g e
APPENDIX A - RS232 CONNECTIONS AND PROTOCOL
The Router is fitted with a female DB9 RS232 connector which is used to send
alarms to the monitoring computer.
5
1
9
6
P IN
FUNCTIO N
2
RS 2 3 2 TX D
3
RS 2 3 2 RX D
5
G ND
5
3
DB9
FEMALE
S E RIA L
CA B L E
3 2
5
W
IR
E
L
E
N
G
T
H
=
4
0
0
m
m
R
X
D
2
5
2
3
5
2
3
T
X
D
T
X
D
R
X
D
G
N
D
(
b
la
c
k
)
DB9
MALE
D B9 FEMALE C ON N EC TOR
C OMPU TER
FSK STANDARD
BAUD RATE:
1200
Stop Bits:
1
Data Bits:
8
Parity:
NONE
Handshaking:
NONE
String Format
<SOT>
Start of Text
ASCII Char 2
ACCOUNT 1-5
Account Code (5 ASCII
characters, e.g. 12345)
INFORMATION 1-3 Alarm Information (3
ASCII characters, e.g.
097)
<CR>
Carriage Return (ASCII
character 13)
<LF>
Line Feed (ASCII
Character 10)
<EOT>
End of Text (ASCII
Character 4)