Intermec EasyCoder PM4i Installation Instructions Manual page 25

Connector Confi guration (RS-232 on "uart2:", "uart3:", or "uart4:")
DB-9 socket
1
2
3
4
5
6
7
8
9
5
GND
9
4 DSR
RTS
8
3
RXD
CTS
7
2
TXD
DTR
6
+5V (0.5
1
RS-232 socket as seen from the outside.
Serial/Industrial Interface Kit Installation Instructions
Signal Meaning
External +5VDC max 500 mA (automatic switch-
off at overload, short-circuit protected)
TXD Transmit data
RXD Receive data
DSR Data set ready
GND Ground
DTR Data terminal ready
CTS Clear to send
RTS Request to send
– Not used
Chapter 3 — Serial Interface
21