Serial Communication Port "Uart1 - Intermec EasyCoder PX4i Service Manual

16.2 RS-232 Serial Communication Port ("uart1:")
MTG
5
GND
9
4 DSR in
RTS out
8
3
RXD in
CTS in
7
2
TXD out
DTR out
6
+5V DC
1
MTG
EasyCoder PX4i and PX6i Service Manual
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 Signal
1
2 TXD
3 RXD
4 DSR
5 GND
6 DTR
7 CTS
8 RTS
9 –
9600
8 bits
None
1
Disabled
Disabled
Disabled in both directions
CR/LF
Meaning
External +5VDC max 500 mA (automatic switch-off at
overload, short-circuit protected)
Transmit data
Receive data
Data set ready
Ground
Data terminal ready
Clear to send
Request to send
Not used
RS-232 socket
("uart1:")
Chapter 16 — Interfaces
167