Intermec PX4i Double Serial Interface Kit Installation Instructions - Page 33

DB-9 socket, Signal, Meaning

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Chapter 4 - Serial Interface "uart3:", "uart4:", and "uart5:" Connector Configuration (RS-232 on "uart3:", "uart4:", or "uart5:") DB-9 socket 1 Signal 2 TXD 3 RXD 4 DSR 5 GND 6 DTR 7 CTS 8 RTS 9 - Meaning External +5VDC max 500 mA (automatic switchoff at overload, short-circuit protected) Transmit data Receive data Data set ready Ground Data terminal ready Clear to send Request to send Not used 5 GND 9 4 DSR RTS 8 CTS 3 7 RXD 2 TXD DTR 6 1 +5V (0.5 RS-232 socket as seen from the outside. Double Serial Interface Kit Installation Instructions 29

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4
5
3
2
1
8
9
7
6
TXD
+5V (0.5
RXD
DSR
GND
DTR
CTS
RTS
Double Serial Interface Kit Installation Instructions
29
Chapter 4 — Serial Interface "uart3:", "uart4:", and "uart5:"
Connector Configuration (RS-232 on "uart3:", "uart4:", or "uart5:")
DB-9 socket
Signal
Meaning
1
External +5VDC max 500 mA (automatic switch-
off
at overload, short-circuit protected)
2
TXD
Transmit data
3
RXD
Receive data
4
DSR
Data set ready
5
GND
Ground
6
DTR
Data terminal ready
7
CTS
Clear to send
8
RTS
Request to send
9
–
Not used
RS-232 socket as seen from the outside.