2.5.3.1 J3 Serial Port - RS-232 Connection
Introduction
This section shows how to connect your PC’s RS-232 port to the
5645.
J3
Connections
Build the cable to connect to your computer or terminal by
referring to the documentation for the device. Standard RS-232
pinouts for IBM compatible personal computers are shown as
follows.
Note: Pinouts vary among computer manufacturers. Check the
hardware reference manual for your machine before wiring the
serial port.
RS-232
Connection
25 PIN
SERIAL PORT
TXD (TRANSMIT)
TXD (TRANSMIT)
RXD (RECEIVE)
RXD (RECEIVE)
SIGNAL GND
J3-5
J3-5
J3-2
J3-2
J3-3
25 PIN SERIAL PORT CONNECTOR
ON PC OR TERMINAL
9 PIN SERIAL PORT CONNECTOR
ON PC OR TERMINAL
25 PIN SERIAL MATING CONNECTOR
(DB-25)
9 PIN SERIAL MATING CONNECTOR
(DB-9)
J3-3
2
3
3
2
3
2
2
3
7
5
5
7
SIGNAL GND
5645
5645
9 PIN
SERIAL PORT
COMMON
RXD232
TXD232
+5 VDC RTN
/SHIELD
6
7
8
9
1
2
3
4
5
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5645 Installation and Hardware Manual
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