HP LaserJet II Serie Manual De Instrucciones página 370

HP 33440/HP 33449 COMBINED SERVICE MANUAL
SERIAL lNTERFACE
Use the Configuration Menu and the instructions in either Appendk A or Appendk B to configure
your printer for se~ 1/0 operation. men you configure your printer for serial operation, you
transfer dab to the printer using serial communication protocol. You mn use either RS-232-C or
RS-422A cable.
Table D-2 fists RS-232-C and RS-422A pin assignment and signal descriptions. Those pins not
appearing in the table are not used.
Table D-2. RS-232-C and RS-422A Pin Assignments and Signal Descriptions.
12
3
K
4
5
k
6
7
9
10
Transmitted dati (data from the ~rinter).
.
Received data (received by the printer).
Received data inverted (RDA) (received by
printer)
Request
to send. This signal is HIGH whenever
the printir is powered ON.
Clear to send. This signal is not required for
the printer to transmit flow control characters.
(Del/Dc3).
Data set rmdy. This signal is not required for
the printer to receive data.
Signal ground.
Send data inverted (SDA).
Send data noninverted (SDB).
Receive data noninverted (RDB).
Data terminal ready. (Polarity can be set from
the printer Control Panel. Normally set to HI.
Refer to host interface specifications for polarity
reauiremenk.)
*The asterisks iden~ signals that are used.
D-4
F
*
*
+
*
*
I
*
*
~
output
Input
Input
1
output
4
Input
Input
4
output
output
Input
output
I