Path: utzoo!attcan!uunet!samsung!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-pcd!hpfcso!rjn
From: rjn@hpfcso.HP.COM (Bob Niland)
Newsgroups: comp.sys.hp
Subject: Re: RS232 Pinout on HP110
Message-ID: <7370205@hpfcso.HP.COM>
Date: 11 Sep 90 19:33:47 GMT
References: <1990Sep11.065103.22106@portia.Stanford.EDU>
Organization: Hewlett-Packard/FSY Ft.Collins,CO,USA
Lines: 29

re: > Does anybody have the pinout for the db-9 on the back of an HP 110?

The HP 9000 Series 300 interface was originally based on the HP 110,
and here is what we used (it is now PC-standard male on the 345/375).

9-Pin   92221M  EIA Circuit     V.24 Circuit    Signal
Number  Pin No. Designator      Designator      Description
_
1       20      CD              108/2           DTR: Data Terminal Ready
_
2       2       BA              103             TXD: Transmitted Data
_
3       3       BB              104             RXD: Received Data
_
4       4       CA              105             RTS: Request To Send
_
5       5       CB              106             CTS: Clear To Send
_
6       6       CC              107             DSR: Data Set Ready
_
7       7       AB              102             GND: Signal ground
_
8       8       CF              109             CD: Carrier Detect
_
9       22      CE              125             RI: Ring Indicator

Regards,                                              Hewlett-Packard
Bob Niland      Internet: rjn@hpfcrjn.FC.HP.COM       3404 East Harmony Road
                UUCP: [hplabs|hpfcse]!hpfcrjn!rjn     Ft Collins CO 80525-9599