APPENDIX B
Connectors
B-1
▌B.1 RS-232C Serial I/F
RS-232
Interface connector
Drawer kick-out
Connector
▌B.1.1 RS-232C Serial I/F cable connection
(F.G) 1
(TXD) 2
(RXD) 3
(RTS) 4
(CTS) 5
(DSR) 6
(S.G) 7
(DTR) 20
1 (F.G)
2 (RXD)
3 (TXD)
4 (DTR)
5 (S.G)
6 (DSR)
7 (RTS)
8 (CTS)
PRINTER
SIDE
(25Pin)
HOST
SIDE
(9Pin)
▌B.1.2 RS-232C Serial I/F signal descriptions
Pin No. Signal name Signal direction Function
Body Frame GND - Frame ground
2 TXD Output Transmit data
3 RXD Input Receive data
6 DSR Input
This signal indicates whether the host computer can receive
data. (H/W flow control)
MARK(Logic 1) : The host can not receive a data.
①
SPACE(Logic 0) : The host can receive a data.
②
The printer transmits a data to the host, after confirming
③
this signal.
When XON/XOFF flow control is selected, the printer
④
does not check this signal.
7 Signal GND - Signal ground
20 DTR Output
This signal indicates whether the printer is busy.
(H/W flow control)
MARK(Logic 1) : The printer is busy.
①
SPACE(Logic 0) : The printer is not busy.
②
The host transmits a data to the printer, after confirmi
③ ng
this signal.
When XON/XOFF flow control is selected, the host does
④
not check this signal.
