Serial Communication Port "Uart1 - Intermec EasyCoder PX4i Service Manual

16.2 RS-232 Serial Communication Port ("uart1:")
RTS out
CTS in
DTR out
EasyCoder PX4i and PX6i Service Manual
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The EasyCoder PX4i and PX6i printers are always fi tted with one RS-
232 communication port. In Intermec Fingerprint, this port is designated
"uart1:" (uart = Universal Asynchronous Receiver and Transmitter.) The
circuitry is fi tted on the CPU board (see Chapter 15) and has a fi xed set of
signals in a DB-9pin female connector which protrudes through a slot in
the printer's rear plate.
Protocol
Default setup
Baud rate:
Char length:
Parity:
Stop bits:
RTS/CTS:
ENQ/ACK:
XON/XOFF:
New line:
Signals on serial port ("uart1:")
DB-9 socket
MTG
1
5
GND
9
2
4 DSR in
8
3
3
RXD in
7
2
TXD out 4
6
+5V DC
1
5
6
MTG
7
8
9
manuals search engine
9600
8 bits
None
1
Disabled
Disabled
Disabled in both directions
CR/LF
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 16 — Interfaces
RS-232 socket
("uart1:")
167