Service manual

Confidential BTP-M280 Service Manual
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3 Main Control Board Description
BTP-M280 can be connected to another device with USB, serial, parallel, Ethernet or WIFI interface. The
USB interface is fixed and other is optional.
3.1 USB interface
3.1.1 Parameter
¾ Data transfer：Supports USB1.1 Protocol
¾ Socket： USB A type standard socket
3.1.2 Interface signal
3.1.3 USB interface connection
Host Printer
VBUS..................................…VBUS
DATA- ................................…DATA-
DATA+................................... DATA+
GND .......................................GND
3.2 Serial interface
3.2.1 Parameter
¾ Data transmission： Asynchronous serial communicate
¾ Handshaking： DTR/DSR or XON/XOFF
¾ Voltage： MARK = -3 to -15V： Logic "1"/ OFF
¾ SPACE = +3 to +15V：Logic "0"/ ON
¾ Baud rate： 1200, 2400, 4800, 9600, 19200, 38400, 57600 bps
¾ [bps: bits per second]
¾ Data bit： 7 bit or 8 bit
¾ Parity bits： No
¾ Stop bit： 1 bit or 2 bit
¾ Socket： D-SUB 25PIN hole socket
Notice：
Handshaking, baud rate, data bit and stop bit can be set by EEPROM and feed button.
Pin Signal Function
1 VBUS +5V
2 DATA- Data-
3 DATA+ Data+
4 GND Ground