linux-kernel - Re: [PATCH v10 0/7] Add Fieldbus subsystem + support HMS Profinet card

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Date:   Mon, 15 Apr 2019 19:41:02 +0200
From:   "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
To:     Sven Van Asbroeck <thesven73@...il.com>, robh+dt@...nel.org,
        linus.walleij@...aro.org
Cc:     lee.jones@...aro.org, mark.rutland@....com, afaerber@...e.de,
        treding@...dia.com, david@...hnology.com, noralf@...nnes.org,
        johan@...nel.org, monstr@...str.eu, michal.vokac@...ft.com,
        arnd@...db.de, gregkh@...uxfoundation.org, john.garry@...wei.com,
        geert+renesas@...der.be, robin.murphy@....com,
        paul.gortmaker@...driver.com,
        sebastien.bourdelin@...oirfairelinux.com, icenowy@...c.io,
        stuyoder@...il.com, jan.kiszka@...mens.com,
        maxime.ripard@...tlin.com, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v10 0/7] Add Fieldbus subsystem + support HMS Profinet
 card

On 09.04.19 16:42, Sven Van Asbroeck wrote:

Hi,

> Fieldbus device (client) adapters allow data exchange with a PLC aka.
> "Fieldbus Controller" over a fieldbus (Profinet, FLNet, etc.)

AFAIK, "fieldbus" is a bit broader term than just the typical IEC61158-
style remote memory stuff. At least that's the terminology my clients
tend to use (eg. they also call some homebbrewn rs485-based protocols
"fieldbus").

Maybe it would be better calling it "IEC-61158" instead of "fieldbus" ?


By the way: can this device be opened/used by several processes
simultaniously ?


--mtx

-- 
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287