SNBC BT-T080R - 6 Interface Signal; RS-232 Interface (Optional); Parameter; Interface Linking Terminal Distribution and Signal Function

BT-T080R User’s Manual
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6 Interface signal
6.1 RS-232 interface (optional)
6.1.1 Parameter
1) Data transfer mode: asynchronous serial communication
2) Handshaking mode: RTS/CTS
3) Level： MARK= -3 to -15 V: Logic "1"/ OFF
i. SPACE = +3 to +15 V: Logic "0"/ ON
4) Baud rate： 1200, 2400, 4800, 9600, 19200, 38400, 57600 bps
5) Data bit： 8 bit or 7 bit
6) Parity checkout： None, even, or odd
7) Stop bit： 1bit
8) Connector： 9-pin serial interface connector (female type)
Note: Serial baud rate, data bit and parity bit are set by EEPROM.
6.1.2 Interface linking terminal distribution and signal function
Printer signal and status is described as the following table:
Pin Signal name Signal direction Function
1 —
2 RXD Input Receive data
3 TXD Output Transmit data
4 DTR Output Data terminal ready
5 SG — Signal ground
6 DSR — Data set ready
7 RTS Output Request to send
8 CTS Input Allow to send
9 FG — Frame ground
Table 6.1.2 Interface and pin explanation
6.1.3 Demonstration of interface connection
Host side Printer side
TXD---------------RXD
RXD---------------TXD
DSR---------------DTR
CTS---------------RTS
RTS---------------CTS
DTR---------------DSR
FG ---------------FG
SG ---------------SG
Note: Please send data to the printer after the printer is powered on and finishes initializing.