
EMS 7000 IRIS +
7940 ENGINEERS GUIDE v2.2 – 13/04/10
6
4. Programming Connection Details
4.1 The computer to transmitter physical connection details are as follows:-
COMPUTER ISOLATED RS 232 PORT
PIN 2 ---------------------------------- TX OUT
PIN 3 ---------------------------------- RX IN
PIN 5 ---------------------------------- COMMON CONNECT
4.2 All Computer to HyperTerminal connections are shown below in Figure 3.
Figure 3
TAMPER
0V 12V
DC
COMMON
CONNECT
RX- RX+
RX TX COMMON
ISOLATED RS485 ISOLATED RS232
3
5
+
POWER
SUPPLY
SERIAL
CONNECTOR
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