• Subject: Re: remote twinax connection problem
  • From: jdraper@xxxxxxx (Jerry Draper)
  • Date: Tue, 28 Oct 1997 13:48:32 -0800 (PST)

What kind of PC's are you running.  Sounds like a PC conflict.


>We have an AS/400 (9402-200, v3r2m0) in our main office. About three
>blocks down the street we have an office. An *SDLC line connects this
>office to the AS/400. At the other end of the line we have a Perle 494e
>controller with a twinax interface. There are three PCs (1-Win 3.1, 2-
>Win95) in the office with twinax cards in them. We are running Netsofts
>emulation software on each PC. The controller shows as an *APPC device
>on the AS/400 and when the users sign on they show up as QPCSUPP
>Normally this works fine - for weeks or months at a time. But every so
>often the users will not be able to get a signon screen at the PCs. The
>lines, controllers, and devices are all varied on and show active on
>the  AS/400. If I reboot the controller it will pass the power on self
>test and come up ready. If I take a 3486 workstation over there I can
>connect it to an unused port and get a signon screen right away. I also
>get a signon screen if I disconnect the twinax line from the PC and
>connect it to the terminal. When I connect the PC back to the same line
>- no signon screen.
>Eventually the PCs will be able to get a signon screen again. It will
>take anywhere from a couple of hours to a day and a half. When they do
>connect it will be with the same software settings, cards, and cables
>that worked yesterday, didn't work a few minutes ago, but are working
>now. If one PC gets a signon screen then the others will too.
>I've varied the line off and on (with and without the reset parameter).
>I've also tried turning on the controller first then the PCs, and
>turning the PCs on first then the controller. All with no luck.
>I can't point to any one thing that makes the connection work. One time
>the signon screens returned while I was driving from the office back to
>the main office.
>I've talked to Perle tech support about this. Their answer is that the
>twinax cards in the PCs are defective. So how do three twinax cards
>suddenly become undefective at the same time and then work for three or
>four months?
>Are there some system values or settings that I should be looking at on
>the As/400.
>Bill Fortenberry
>Magnolia Steel

Jerry Draper, Trilobyte Software Systems, since 1976
Specializing in connecting PC's, Windows, MAC's, and LAN's to the AS/400
Representing Synapse, Apple, IBM, UDS, MI, DCI, Netsoft, etc.
(415) 457-3431; (415) 258-1658fax; jdraper@wco.com

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