User`s manual

Confidential Thermal Printer
RS-T80 Programming Manual
- 64 -
6.2 Serial interface
The serial interface of the printer is compatible with RS-232 and is equipped with a 25-pin
female D type connector.
PIN No. Signal definition
PIN1 Frame Ground
PIN2 TXD
PIN 3 RXD
PIN 4 DTR
PIN 5 Not connected
PIN6 DSR
PIN 7 Signal Ground
PIN 8~19 Not connected
PIN 20 DTR
PIN 21~25 Not connected
The user may check the current setting status of the interface by printing a configuration
table. The default setting is as follows:
Baud rate: 19200bps, 8 data bit, none Parity, 1 stop bit
Handshake: DTR/DSR
6.3 USB interface
 Parameters
Data transmission: Support USB1.1 protocol
Connector (Printer side): USB B type socket. Support and pass USB HUB
 Interface signal definition and functions
Pin No. Signal Description
1 VBUS +5V
2 DATA- Printer data transmit line minus
3 DATA+ Printer data transmit line plus
4 GND Ground
 Interface connector