Hi Björn, the problem with the subscriptions in S7 are that they do work, but only on S7 300 (I think). I mentioned before on this list, that we should probably do context-sensitive “isXYZSupported” functions. Unfortunately, I haven’t yet had the time to implement them.
So, to make it short … in general the S7 protocol doesn’t support subscriptions, except for a small subset of device types. If Cesar could possibly tell me which devices support Subscriptions, I could implement something to make this happen (Shouldn’t be too much work). One day we’ll probably have simulated subscriptions, but admittedly as nobody really seems to be interested in working on core-services like this, it’s probably gonna take a while. In the past I was able to work on PLC4X full time, but as no company (except Zylk) was really willing to pay for any form of development, I had to pick a job that pays the bills. I’m still on it, but doing this in my free time. Chris Von: Björn Haverland <bjo...@coding-nexus.com> Datum: Mittwoch, 13. März 2024 um 18:52 An: dev@plc4x.apache.org <dev@plc4x.apache.org> Betreff: Re: Board report .... Hi, as I'm starting to get used to the project I do have some questions, especially regarding the mentioned v1.0.0. I tried to set up a plc4j with the quickstart guide which utilizes the S7 protocol. So there are examples, in the example folder as well, which are just not working. (The Subscription for instance) I do understand that the lib hasn't had a Major release yet, but I think it could set people off. I like to suggest to change the docs on that points. I know it is hard to test everything but if a feature isn't implemented a wrong documentation just leads to frustration. Cesar has implemented a working CyclicSubscription, and I think he is going to merge it to the dev branch soon. But still there are other subscription methods shown which won't work, just yet. I'd like to hear your opinion on this. Best regards Bjoern Gesendet von Outlook für Android<https://aka.ms/AAb9ysg> ________________________________ From: Christofer Dutz <christofer.d...@c-ware.de> Sent: Wednesday, March 13, 2024 12:00:11 PM To: dev@plc4x.apache.org <dev@plc4x.apache.org> Subject: Board report .... Hi all, unfortunately I had almost forgotten to submit the board report after coming back from my little snowboard vacation. I took the liberty of posting the following report. If there are changes you’d like to see, please tell me asap and I can edit it. ## Description: The mission of the Apache PLC4X project is creating a set of libraries for communicating with industrial programmable logic controllers (PLCs) using a variety of protocols but with a shared API. ## Project Status: Current project status: Ongoing with moderate activity Issues for the board: None ## Membership Data: Apache PLC4X was founded 2019-04-17 (5 years ago) There are currently 21 committers and 13 PMC members in this project. The Committer-to-PMC ratio is roughly 3:2. Community changes, past quarter: - No new PMC members. Last addition was César García on 2021-10-01. - No new committers. Last addition was Jinlin Hong on 2022-11-02. ## Project Activity: Version 0.12.0 was released on 2024-02-19 The project has been working on closing many issues this quarter. We were able to cut the number of open issues by half. Also did we invest a considerable amount of time for working towards reproducible builds and automating most of the release process. Also did we update the content on the website, especially thanks to a new documentation- generator now the configuration for our drivers is automatically going to be up to date. ## Community Health: We know we haven't invited any new committers for quite some time. This is definitely not due to a high committer bar, but more related to the fact that the people needing Apache PLC4X seem to come from a part of the industry that is completely new to the concept of open-source. Only very few people accept our offer to mentor them to scratching their own itches. Interestingly the project is gaining more and more popularity on the user- side. Activity on the mailing lists seems to have increased slightly (8% - 605 emails) The community is looking forward to a community meetup in Frankfurt the weekend after the board meeting. Here we hope to re-ignite some of the community activity and focus on perhaps releasing a 1.0.0 version of PLC4X this year.
