Serial Interface(Rs232C); Usb Interface (V1.1) - Star Micronics NP-345 Product Specifications

7) Timing chart
POWER
DATA
STB
BUSY
ACK
T1=3500msec(MAX) T2,T3=500nsec(MIN) T4=500nsec(MAX) T5,T6=4microsec(TYP)
8) Reception control
Data from host can be receivable at BUSY signal LOW. Not available at HIGH.

3.2 Serial interface(RS232C)

1) Synchronization
2) Transfer speed
3) 1 word consists of :
Start bit
Data bit
Parity bit
Stop bit
4) Signal
RS-232C
Mark : Theory "1" (-3V~-12V)
Space : Theory "0" (+3V~+12V)
5) Reception data (RD signal)
Mark : 1
Space : 0
6) Reception control (DTR signal)
RS-232C
Mark : Data transmission not available
Space : Data transmission available
7) Transmission data (TD signal)
<<DC1>> [11] h code, XON: Data transmission available
<<DC3>> [13] h code, XOFF: Data transmission not available
3.3 USB interface
1) Version: USB1.1
2) Port: Up stream port (B-jack)
3) Power supply: Self-power
T2 T3
T1 T4
: Not synchronized
: 19200, 38400bps (user optional)
: 1 bit fixed
: 8 bits (user optional)
: no parity (user optional)
: More than 1 bit
T5 T6
8