Interface Signal; Serial Interface - SNBC BT-UC156 User Manual

6. Interface Signal

6.1 Serial interface

The interface cable is customerized and the interface connector is double socket with 4PIN 2.54mm
between each other. Pin signal is defined as below figure:
Interface signal order is as below:
Signal
Pin No.
name
1 RTS/DTR
2 TXD
3 RXD
4 GND
Users can check interface settings via printing configuration sample. The default Serial interface settings:
19200bps baud rate, 8 data bit, without checkout, 1 stop bit, hardware handshaking (shall not check
handshaking signal when the printer returns data).
Signal
direction
Output Serial handshaking signal
Output Serial data output port
Input Serial data input port
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Function
Signal ground
BT-UC156 User's Manual