From: "Björn Lundin" <b.f.lundin@gmail.com>
Subject: Re: Simple Components 4.12 with MQTT implementation released
Date: Thu, 14 Apr 2016 23:03:46 +0200
Date: 2016-04-14T23:03:46+02:00 [thread overview]
Message-ID: <nep0d9$vnc$1@dont-email.me> (raw)
In-Reply-To: <neohin$ttp$1@gioia.aioe.org>
On 2016-04-14 18:47, Dmitry A. Kazakov wrote:
> On 2016-04-14 15:01, slos wrote:
>
>> Anyone for OPC ? ;-)
>
> Well, which of?
>
> OPC DA is, truth to tell, garbage.
Yes.
> OPC UA is under permanent development. It is impossible to say when it
> will reach even a semi-standard stage.
Iteresting. Never heard of it.
But we left the OPC-world 10 years ago,
when we realized it is much better with direct socket
with some protocol we PLC-guys and we could agree upon.
>
> Regarding architecture, OPC is barely usable in automation because of
> its heavy client/server architecture. Part of our business is to replace
> OPC with better middleware architectures. Replacement works smoothly
> because in most cases you can throw out the OPC server and communicate
> with the hardware directly. E.g. most SPS' support either ITOT or
> ModBus, each far superior to OPC.
>
The only real advantage I can see is the OPC-scout - a way of
browsing raw data in the plc.
But that is for manual use, and troubleshooting,
so for 'office' use I can see OPC as something not too bad -
hence why I wrote down the opcda code in another answer.
For automation - other protocols are better
--
--
Björn
next prev parent reply other threads:[~2016-04-14 21:03 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-12 18:48 Simple Components 4.12 with MQTT implementation released Dmitry A. Kazakov
2016-04-14 8:54 ` slos
2016-04-14 10:07 ` Dmitry A. Kazakov
2016-04-14 13:01 ` slos
2016-04-14 16:19 ` Björn Lundin
2016-04-14 16:49 ` Dmitry A. Kazakov
2016-04-14 20:57 ` Björn Lundin
2016-04-14 21:29 ` slos
2016-04-14 21:20 ` slos
2016-04-15 11:29 ` Björn Lundin
2016-04-15 12:13 ` slos
2016-04-14 16:47 ` Dmitry A. Kazakov
2016-04-14 21:03 ` Björn Lundin [this message]
2016-04-14 21:30 ` slos
2016-04-15 8:01 ` Dmitry A. Kazakov
2016-04-15 10:06 ` slos
2016-04-15 11:12 ` Björn Lundin
2016-04-15 15:05 ` Dmitry A. Kazakov
2016-04-15 15:17 ` slos
2016-04-15 15:34 ` Dmitry A. Kazakov
2016-04-15 16:00 ` slos
2016-04-15 16:39 ` Dmitry A. Kazakov
2016-04-15 22:39 ` slos
2016-04-15 15:47 ` slos
2016-04-15 16:30 ` Dmitry A. Kazakov
2016-04-15 22:18 ` slos
2016-04-16 8:12 ` Dmitry A. Kazakov
2016-04-16 17:48 ` slos
2016-04-18 16:33 ` Dmitry A. Kazakov
2016-04-19 11:51 ` hanslad
2016-04-19 12:43 ` Dmitry A. Kazakov
2016-04-19 12:59 ` high frequency time stamping (Was: Simple Components 4.12 with MQTT implementation released) G.B.
2016-04-19 13:35 ` Dmitry A. Kazakov
2016-04-20 7:55 ` Georg Bauhaus
2016-04-20 8:48 ` Dmitry A. Kazakov
2016-04-19 13:43 ` Simple Components 4.12 with MQTT implementation released hanslad
2016-04-19 16:39 ` Dmitry A. Kazakov
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