– 8 –
GENERAL SPECIFICATIONS
5. Serial Interface (option)
5-1. General Specifications
Item Specifications
Interface RS-232C level
Synchronization System Asynchronous
Baud rate 150-19,200 bit per second (BPS) [selectable]
150, 300, 600, 1200, 2400, 4800, 9600, 19200BPS
Word length
Start bit: 1 bit
Data bit: 7 or 8 bits (selectable)
Parity bit: Odd, Even or None (selectable)
Stop bit: More then 1 bit length
Signal polarity
Mark: Logic “1” (–3V to –15V)
Space: Logic “0” (+3V to +15V)
Handshaking DTR
XON/XOFF
ETX/ACK
Data buffer 8KB (standard)
5-2. Connector Signal and Functional Descriptions
Pin No. Signal name Direction Function
1 GND — Printer’s chassis ground.
2 TXD OUT This pin carries data from the printer.
3 RXD IN This pin carries data to the printer.
4 RTS OUT Always space.
This pin is Space when the computer is ready to send data.
This printer does not check this pin.
6 NC Unused.
7 GND — Signal ground.
8-10 NC Unused.
This printer turns this pin Space when it is ready to receive data.
This line carries the same signal as pin 20.
12 NC Unused.
13 GND — Signal ground.
14-19 NC Unused.
20 DTR OUT The printer turns this pin Space when it is ready to receive data.
21-25 NC Unused.
5 CTS —
11 RCH OUT
To Next Page
Loading...
Need help?
General
