SNBC BTP-R880NPI, Руководство по обслуживанию, Страница: 13 / 45

BTP-R880NPII Service Manual
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3 Communication interface
BTP-R880NPII support RS232 serial interface, USB interface, Ethernet interface.
3.1 RS232 serial interface
3.1.1 Connector and specification
The printer serial interface is compatible with RS-232 standard, of which the outlet is 9PIN and the
connector is female DSUB-9 type.
3.1.2 Signal definition
Signal definition of 9pin interface is as below:
Pin Signal name Signal direction Function
1 NC
—
NC
2 RXD Input Data Input
3 TXD Output Data input
4 DTR Output Require to Receive
5 GND
—
GND
6 DSR Input Require to send
7 RTS Output Require to Receive
8 CTS Input Require to send
9 +5V Output Not connected
3.1.3 Interface parameters
Parameters of the Serial interface module:
Item Parameter
Data transfer Serial
Synchronize method Asynchronism
Handshaking DTR/DSR or XON/XOFF
Pressure
MARK = -3 to
–15 V: logic 1/ OFF
SPACE = +3 to +15 V: logic 0/ ON
Baud rate
1200,2400,4800,9600,19200,38400,57600
，
115200bps
Data bits 8bits
Stop bits 1bit
Notes:
All of the baud rates, data bits and parity bits of the serial interface can be configured by EEPROM.
3.1.4 Default Setting
Default configuration of the printer.(user can inquire the interface configuration by printing self test
page)
Baud rate: 9600bps
Data bits: 8bits
Parity bits: NO
Stop bits: 1bit