From: "Björn Lundin" <b.f.lundin@gmail.com>
Subject: Re: Ada for Automation
Date: Tue, 18 Nov 2014 13:27:49 +0100
Date: 2014-11-18T13:27:49+01:00 [thread overview]
Message-ID: <m4fdt8$tfc$1@dont-email.me> (raw)
In-Reply-To: <1uhe64g68og8k.16z0icy3wfdhu.dlg@40tude.net>
On 2014-11-18 12:03, Dmitry A. Kazakov wrote:
> Because OPC was totally unsuitable for the purpose. It was extremely slow,
> hugely difficult to configure and had to run on the same host. Some of the
> problems were lifted by the OPC UA, but it is still a monstrosity.
Indeed.
>> Yes, that is why I think Ada for Automation is interesting.
>> But in practice, i still see the dominating way of this kind of
>> communication to be TCP/IP with vendor-specific data content.
> I don't understand "but". In our middleware (which is in Ada) there is a
> well defined interface to design new device interfaces. In fact there is a
> ready-to use base device type for a custom TCP/IP connection based client.
> You would simply override Read and Write abstract operations. All automatic
> connection and reconnection stuff is handled by the base type.
>
You are right, there should be not but in that sentence.
PLC-to-host communication is simple, stable and robust via TCP/IP and
custom protocols.
However, what I meant was that the OP's library would be very
interesting if I
>>> .... was given the opportunity to do conveyor system logic
>>>in say a raspberry pi, I'd definitely would look closer to you
>>>project.
That is if I was to control motors and read inputs myself.
But there seem to be no market for that, unless you supply the
hardware - as in conveyors/cranes/AGV ets - yourself.
--
Björn
next prev parent reply other threads:[~2014-11-18 12:27 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-06 11:14 Ada for Automation slos
2014-11-06 13:31 ` Dmitry A. Kazakov
2014-11-06 14:43 ` slos
2014-11-06 17:22 ` Dmitry A. Kazakov
2014-11-06 21:58 ` slos
2014-11-07 8:29 ` Dmitry A. Kazakov
2014-11-07 9:51 ` slos
2014-11-07 13:44 ` Dmitry A. Kazakov
2014-11-07 15:23 ` slos
2014-11-07 17:16 ` Dmitry A. Kazakov
2014-11-07 20:37 ` slos
2014-11-07 21:15 ` Dmitry A. Kazakov
2014-11-07 22:21 ` slos
2014-11-07 11:44 ` slos
2014-11-07 13:46 ` Dmitry A. Kazakov
2014-11-18 8:52 ` Björn Lundin
2014-11-18 9:28 ` Dmitry A. Kazakov
2014-11-18 10:43 ` Björn Lundin
2014-11-18 11:03 ` Dmitry A. Kazakov
2014-11-18 12:27 ` Björn Lundin [this message]
2014-11-18 13:24 ` Dmitry A. Kazakov
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