You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Table H-2. Connector sianals for the serial interface.<br />
PIN SIGNAL NAME DIRECTION FUNCTION<br />
1 F-GND Frame ground.<br />
3 TXD . .-<br />
OUT The TXD ftransmit data) sianal<br />
carries data from the printer<br />
3 RXD IN The RXD (receive data) signal<br />
carries data to the printer<br />
A FITS OUT The FITS (reauest to send)<br />
I sional is on when the minter I<br />
isready to receive data.<br />
5 CTS IN The CTS (clear to send) signal<br />
is on when the computer is<br />
ready to send data.<br />
6 DSR IN This signal line is used<br />
to check if the printer<br />
7 S-GND<br />
6 DCD<br />
9 TTY TXDR<br />
<strong>10</strong> TTY TXD<br />
11 REV-CH<br />
12 N/C<br />
13 S-GND<br />
14-16 N/C<br />
17 TTY TXDR<br />
18 TTY RXDR<br />
19 TTY RXD<br />
20 DTR<br />
21-22 N/C<br />
23 TTY RXDR<br />
,‘:!<br />
IN<br />
OUT<br />
OUT<br />
IN<br />
OUT<br />
is ready for operation.<br />
Signal ground.<br />
When the DCD (data carrier<br />
detect) signal is on,, the<br />
receive signal is wrthin a<br />
specified range.<br />
This pin indicates the<br />
signal line return of 20mA<br />
current loop for data transmission.<br />
Indicates the signal line of<br />
20mA current loop for data<br />
transmission.<br />
The REV-CH (reverse channel) pin<br />
is the signal line for busy<br />
protocols. This pin goes off<br />
when the buffer fills, and on<br />
when the printer is ready to<br />
receive data.<br />
Unused.<br />
Signal ground.<br />
Unused.<br />
Indicates the signal line<br />
return of the 20mA current<br />
loop for data transmission.<br />
Indicates the signal line<br />
return of the 20mA current<br />
loop for data reception.<br />
Indicates the signal line<br />
of the 20mA current loop for<br />
data reception.<br />
The DTR (data terminal ready)<br />
Din is on when the minter is<br />
ready to receive data.<br />
Unused.<br />
Indicates the signal line<br />
return of the 20mA current<br />
Indicates the signal line of the<br />
I