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- From: mark@hpcpbla.bri.hp.com (Mark Simms)
- Date: Wed, 27 Jan 1993 15:15:33 GMT
- Subject: Re: HP-7585 plotter
- Message-ID: <9930013@hpcpbla.bri.hp.com>
- Organization: HP Computer Peripherals Bristol, UK
- Path: sparky!uunet!munnari.oz.au!spool.mu.edu!sdd.hp.com!hpscit.sc.hp.com!hplextra!otter.hpl.hp.com!hpltoad!hpopd!hpcpbla!mark
- Newsgroups: comp.periphs.printers
- References: <1993Jan09.121432.12420@edsi.plexus.COM>
- Lines: 107
-
-
- >> Does anyone know anything about this plotter? We have one at work
- >> that was connected to an RS6000 and we have moved it to a print
- >> server device that uses a standard serial port. I can't find any
- >> information on the pin-out for the modem/computer port.
-
- I have never tried to interface one of these things using RS-232. The
- HP-IB is much easier if you era connecting it to an HP system.
- However, I have the manual and will try to summarise what it says.
-
- The following pins are used on the computer/modem port:
-
- Pin no Signal Name
- 2 Data line to plotter TDATA
- 3 Data line from plotter RDATA
- 4 Request to send from plotter RTS
- 5 Clear to send to the plotter CTS
- 6 Data set ready to the plotter DSR
- 7 Signal ground SGND
- 20 Data terminal ready to computer/modem DTR
- 23 Data signal rate selector DSRS
-
- The following pins are used on the terminal port:
-
- Pin no Signal Name
- 2 Data line to plotter TDATA
- 3 Data line from plotter RDATA
- 7 Signal ground SGND
- 4 Request to send to plotter RTS
- 5 Clear to send to the terminal CTS
- 6 Data set ready from the plotter DSR
- 10 Data terminal ready to computer/modem DTR
-
- In addition there are the following switches that should be set:
-
- Interface mode: Set to RS-232 for RS-232 operation. This is
- only read at power on. The LED on the RS-232
- section of the control panel should light up.
-
- Stand alone/Eavesdrop: Usually set to stand alone. Set to eavesdrop
- if you are connecting a computer to the
- computer port and a terminal to the terminal
- port and wish to use the terminal in pass
- through mode.
-
- Monitor mode/Normal: Usually set to normal. Set to monitor if you
- wish commands being sent to the plotter
- through the computer/modem port to be echoed
- down the terminal port for debugging purposes.
-
- Local/Normal: Usually set to normal. Set to local if the
- commands for the plotter come from the
- terminal port rather than the computer/modem
- port.
-
- Parity: Switches that set parity checking and
- generation. Set according to what your host
- sends.
-
- Duplex full/half: Not normally used. In somemodes indicates
- whether data fromt he terminal port is echoed
- back on that port.
-
- Hardwire/Modem: Usually set to hardwire. If set to modem,
- hardware handshaking is disabled and full
- duplex is enabled.
-
- DTR bypass/normal: Usually set to normal. If set to bypass, the
- DTR line on the computer/modem port is
- connected directly to the DTR line on the
- terminal port.
-
- BAUD rate: Set to the baud rate sent by your system. The
- same rate must be used for both ports.
-
- Normally the computer/modem port is used to connect to the host
- computer. The terminal port may be used to add a terminal either for
- debugging or for remote operation.
-
- The plotter uses handshaking modes:
-
- Hardware handshaking: Pin 20 of the connector (RTS) is used to
- control the flow of data to the plotter. This
- will always be set if the hardwire/modem
- switch is set to hardwire.
-
- Xon/Xoff: XON and XOFF characters are used to control
- handshaking. This is always used.
-
- Enquire/Acknowledge: The plotter will respond to an ENQ character
- by sending an ACK character when ready to
- receive data. This is used by som HP computer
- systems.
-
- Hope this information is useful.
-
- Mark Simms
-
- ----------------------------------------------------------------------
- Opinions expressed are my own and are not intended to be an official
- statement by Hewlett-Packard Company
- ----------------------------------------------------------------------
- Name: Mark Simms
- Profession: Software Engineer
- Organization: Hewlett-Packard Computer Peripherals Division
- Unix-mail: mark@hpcpbla.bri.hp.com
- ----------------------------------------------------------------------
-