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APPENDIX
APPENDIX 5. SERIAL INTERFACE
1 Specifications
(1) Synchronizing system: Asynchronous
(2) Baud rate : 4800, 9600, 19200 or 38400 bps (User selectable)
(3) Configuration of one word
Start bit: 1 bit
Data bits: 7 or 8 bits (User selectable)
Parity bit: Odd, even, or none (User selectable)
Stop bit: 1 bit or more
Transmission control: DTR/DSR or XON/XOFF control (User selectable)
2 Connector Pin Assignments
Host side
D-Sub 9 pin (Female)
Printer side
D-Sub 25 pin (Male)
3. Connector Pin Configuration
Function
Grounding for safety (Case ground)
Transferred data
Received data
Same as DTR
Data set ready or reset (Selected with the DIP switches)
Ground for signals (Common ground on the circuit)
Printer Busy signal
Reset (Selected with the DIP switches)
I/O
Output
Input
Output
Input
Output
Input
Applicable connectors (D-Sub connectors)
Printer side: 17LE-13250 (DDK or equivalent)
Cable side: 17JE-23250 (DDK or equivalent)
CAUTION
• Signals for RS-232C are specified based on EIA RS-232C.
• While data is not being transferred, be sure to maintain the received data in a mark state.
Pin No.
Case
2
3
8
4
5
6
Signal name
FG
RXD
TXD
CTS
DTR
GND
DSR
Pin No.
1
2
3
4
6
7
20
Signal name
FG
TXD
RXD
RTS
DSR
GND
DTR
NO.
1
2
3
4
6
7
20
25
Signal name
FG
TD
RD
RTS
DSR
GND
DTR
INIT