Warwick X7220 User Manual
Page 5
3.0 INTERFACES
3.1 Communication Port 9 Way D Type Connector RS232/RS485
1
ALARM
CONTACT
OUTPUT
6
ALARM
CONTACT
OUTPUT
2
RS232 RD RECEIVE DATA
INPUT
7
-VE
RS485
INPUT/OUTPUT
3
RS232 TD TRANSMIT DATA
OUTPUT
8
CTSI
OUTPUT
4
NU
9
+VE
RS485
INPUT/OUTPUT
5
0V
INPUT
PIN 1 AL1
Voltage free, normally open contact
PIN 2 RD
RS232 Receive serial data from host
PIN 3 TD
RS232 Transmit serial data to host.
PIN 4 NU
Not Used
PIN 5 OV
0V common for host.
PIN 6 AL2
Voltage free, normally open contact
PIN 7 –VE
RS485 Bi-directional data.
PIN 8 CTS
Brought low by the modem when a RF carrier is detected or the receiver buffer memory is full.
This can be connected to RTS on the host to inhibit data from the host in duplex operations.
PIN 9 +VE
RS485 Bi-directional data.
3.2 Service Port 9 Way D Type Connector RS232/RS485
1
NOT
USED
6
CONFIGURATION
MODE
INPUT
2
RS232 RD RECEIVE DATA
INPUT
7
-VE
RS485
INPUT/OUTPUT
3
RS232 TD TRANSMIT DATA
OUTPUT
8
NOT
USED
4
NU
9
+VE
RS485
INPUT/OUTPUT
5
0V
INPUT
PIN 1 NU
Not Used
PIN 2 RD
RS232 Receive serial data from host
PIN 3 TD
RS232 Transmit serial data to host.
PIN 4 NU
Not Used
PIN 5 OV
0V common for host.
PIN 6 CON
Configuration input. Connecting 0V to this input will send the configuration menu to the host
when the power is applied. It is left open circuit for normal operation.
PIN 7 –VE
RS485 Bi-directional data.
PIN 8 NU
Not Used.
PIN 9 +VE
RS485 Bi-directional data.