Path: utzoo!attcan!uunet!seismo!sundc!pitstop!sun!oliveb!tymix!antares!jms
From: jms@antares.UUCP (joe smith)
Newsgroups: comp.sys.dec.micro
Subject: Re: Need VT-180 (ROBIN) printer port pinout
Summary: Normal 6-wire connection
Message-ID: <254@antares.UUCP>
Date: 6 Nov 88 01:34:58 GMT
References: <2190@tekcae.CAX.TEK.COM>
Reply-To: jms@antares.UUCP (joe smith)
Organization: Tymnet QSATS, San Jose CA
Lines: 29

In article <2190@tekcae.CAX.TEK.COM> bobp@tekcae.CAX.TEK.COM (Robert N. Perry (Sky Scum)) writes:
>	I need the pinout for the VT-180 as I'm having no luck at all
>getting my Epson FX80 to work with this system. Can anyone help me with the
>serial printer port pinout ?
>	I've found that a straight null modem cable doesn't work.

From the "VT180 Series Technical Manual", page 3-35:
  Pin	Signal Description	Mnemonic
   1	Protective Ground	PROT GND
   2	Transmitted Data	TXD
   3	Received Data		RXD
   6	Data Set Ready		DSR
   7	Signal Ground		GND
  20	Data Terminal Ready	DTR

Note that the following signals are NOT connectd:
   4	Request To Send		RTS
   5	Clear To Send		CTS
   8	Carrier Detect		CD

Some printers get upset if they don't see a signal on DSR, CTS, and CD at
their end of the null modem.  Use a break-out box and check for these
signals, and jumper various pins together to see which ones the printer wants.

-- 
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