Communication Interface; Rs232 Serial Interface; Connector And Specification; Signal Definition - SNBC BTP-R880NPI Service Manual

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
1
2
3
4
5
6
7
8
9

3.1.3 Interface parameters

Parameters of the Serial interface module:
Data transfer
Synchronize method
Handshaking
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
Signal name
NC
RXD
TXD
DTR
GND
DSR
RTS
CTS
+5V
Item
Serial
Asynchronism
DTR/DSR or XON/XOFF
MARK = -3 to –15 V: logic 1/ OFF
Pressure
SPACE = +3 to +15 V: logic 0/ ON
Baud rate 1200,2400,4800,9600,19200,38400,57600，115200bps
Data bits 8bits
Stop bits 1bit
Signal direction
—
Input
Output
Output
—
Input
Output
Input
Output
Parameter
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BTP-R880NPII Service Manual
Function
NC
Data Input
Data input
Require to Receive
GND
Require to send
Require to Receive
Require to send
Not connected