8
Alarm output
With active contact (contact capacity
3A/250V~
resistive load) the voltage
+V
(power) is available between clips
1(+) and 2(-).
3.2 Serial ports of communication
TD320 terminal communication with other devices is possible
through serial connection with
RS485
,
RS232
and
RS422
.
The electrical signals are available in two connectors present at
the back of the terminal:
post DB9
and
post DB25.
DB9 FE
CONNECTOR PIN NUMBER
SIGNAL
PORT
1
Not used
-
2
RX – RS232 Program
COM2
3
TX – RS232 Program
COM2
4
RS485 -
EXP1
5
GND RS485 / RS232 EXP1 / COM2
6
TX – RS232
EXP1
7
RX – RS232
EXP1
8
Not used
-
DB9 PINS
9
RS485 +
EXP1
