From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!mx02.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Simple Components 4.12 with MQTT implementation released Date: Thu, 14 Apr 2016 18:47:10 +0200 Organization: Aioe.org NNTP Server Message-ID: References: <6d3b7ac5-8fc6-406c-8aac-947d25a78249@googlegroups.com> NNTP-Posting-Host: LMk7+sG0YqgPmReI4fVkAA.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.7.2 X-Notice: Filtered by postfilter v. 0.8.2 Xref: news.eternal-september.org comp.lang.ada:30107 Date: 2016-04-14T18:47:10+02:00 List-Id: On 2016-04-14 15:01, slos wrote: > Anyone for OPC ? ;-) Well, which of? OPC DA is, truth to tell, garbage. OPC UA is under permanent development. It is impossible to say when it will reach even a semi-standard stage. 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. > http://open62541.org/ Cannot comment on it. I am familiar with Softing OPC DA stack and with Unified Automation OPC UA stack. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de