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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Ada for Automation
Date: Tue, 18 Nov 2014 10:28:30 +0100
Organization: cbb software GmbH
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Date: 2014-11-18T10:28:30+01:00
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On Tue, 18 Nov 2014 09:52:13 +0100, Björn Lundin wrote:

> Very few sites use OPC, which was believed to be THE way of
> communicating in the early 2000s

Huh.
 
> Talking modbus directly would be nice, but in my field, I don't see
> any of the vendors preferring that to TCP/IP.

ModBus TCP is actually far more wide spread than ModBus RTU.

The design of middleware should support easy developing on new interfaces.
That is the idea of middleware, to decouple the application from the
hardware.
 
-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de