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GENERAL SPECIFICATIONS
5
Serial Interface (optional)
When using the serial interface, the optional Serial-Parallel Converter must be connected to the printer.
5-1. General Specifications
Item
Interface
Synchronization System
Baud rate
Word length
Start bit:
Data bit:
Parity bit:
Stop bit:
Signal polarity
Mark:
Space:
Handshaking
Data buffer
5-2. Connector Signal and Functional Descriptions
Pin No.
Signal name
1
GND
2
TXD
3
RXD
4
RTS
5
CTS
6
NC
7
GND
8~10
NC
11
RCH
12~19
NC
20
DTR
21~25
NC
RS-232C level
Asynchronous
150 - 19,200 bits per second (BPS) [selectable]
150, 300, 600, 1200, 2400, 4800, 9600, 19200 BPS
1 bit
7 or 8 bits (selectable)
Odd, Even or None (selectable)
More than 1 bit length
Logic "1" (–3V to –15V)
Logic "0" (+3V to +15V)
DTR
X
/X
ON
OFF
ETX/ACK
8KB (standard)
Direction
Printer chassis ground.
—
This pin carries data from the printer.
OUT
This pin carries data to the printer.
IN
Always space.
OUT
This signal is space when the computer is ready to send data.
—
The printer does not check this pin.
Unused.
—
Signal ground.
Unused.
The printer sets this signal to space when it is ready to receive data.
OUT
This line carries the same signal as pin 20.
Unused.
OUT
The printer sets this signal to space when it is ready to receive data.
Unused.
– 10 –
Specifications
Function
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