HP d640 HP D640 High-Volume Printer - Installation Manual (Printer and Accesso - Page 107

Set the Printer's Communication Interface

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Host Interface Printer Interfaces Direct connect parallel is second choice When connecting the printer directly to an HP 9000 system it is possible to read back only limited status information: the printer is offline, or is out of paper. This is an asynchronous, byte-wide, forward (host to printer) direction channel with data and status lines. This mode is known as Centronics mode or IEEE 1284 Compatibility mode. Direct connect parallel is not possible on HP 3000 systems. Direct connect serial is third choice The serial communication interface is RS-232C or RS-422A and operates at up to 115,200 baud. Note that HP's DTC's maximum baud rate is 19,200 or 38,400 depending on the DTC. As this is a slower data transfer rate than the parallel interface, performance on the serial interface will be lower than performance on the parallel interface. The serial interface connecting cable uses a standard DB-25 male connector. You can configure the D640 as a printer that does status checking; on MPE/iX that's Termtype 22. Set the Printer's Communication Interface If you are using JetDirect EX, configure your printer's parallel interface at the operator panel, set Parallel mode to Advanced, and Parallel Speed to Fast. (These are the factory default settings). If you are using HP-UX direct connection on the parallel interface, set Parallel mode to Compatible and Parallel Speed to Fast. If you are using the serial connection, set the baud rate, pacing and handshake method. DTC16 or DTC48, set baud rate to 19,200 baud. DTC16xx or DTC72, set baud rate to 38,400 baud. Host Computer Interface Installation and Configuration 3-5

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Printer Interfaces
Host Computer Interface Installation and Configuration
3-5
Host Interface
Direct connect parallel is second choice
When connecting the printer directly to an HP 9000 system it is possible to read back only
limited status information: the printer is offline, or is out of paper. This is an asynchro-
nous, byte-wide, forward (host to printer) direction channel with data and status lines. This
mode is known as Centronics mode or IEEE 1284 Compatibility mode.
Direct connect parallel is not possible on HP 3000 systems.
Direct connect serial is third choice
The serial communication interface is RS-232C or RS-422A and operates at up to 115,200
baud.
Note that HP’s DTC’s maximum baud rate is 19,200 or 38,400 depending on the
DTC.
As this is a slower data transfer rate than the parallel interface, performance on the
serial interface will be lower than performance on the parallel interface.
The serial interface connecting cable uses a standard DB-25 male connector.
You can configure the D640 as a printer that does status checking;
on MPE/iX that’s
Termtype 22.
Set the Printer’s Communication Interface
If you are using JetDirect EX, configure your printer’s parallel interface at the operator
panel, set Parallel mode to Advanced, and Parallel Speed to Fast. (These are the factory
default settings).
If you are using HP-UX direct connection on the parallel interface, set Parallel mode to
Compatible and Parallel Speed to Fast.
If you are using the serial connection, set the baud rate, pacing and handshake method.
DTC16 or DTC48, set baud rate to 19,200 baud.
DTC16xx or DTC72, set baud rate to 38,400 baud.