Talk:Modbus

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I went to the site, and I can say it contains nothing useful from encyclopedic point of view. This link belongs to 'yellow pages'. Deleting. --matusz 09:32, 15 Oct 2004 (UTC)

I think this page was written by a MODbus salesman. It is very POV.

Where are the sources to state that Modbus "is the most commonly used communication interface". I could have easily said the same about EtherNET/IP, Profibus, DeviceNET, DH+, ControlNET or RemoteI/O.

Wikipedia is a place to learn and share information, not to advertise.

ProdigalSon 08:51, 26 August 2006 (UTC)

Count the devices. A reference refuting the statement would be most welcome. Modbus is everyone's second-favorite protocol (with their own, proprietary, superior protocol being offered to their customers who are englightened enough to realize that one vendor has every solution they could ever possibly need). I suspect that its popularity is due to being available royalty-free, though I have no reference for that. There's no such thing as a "Modbus" salesman any more than there's an "Ethernet" salesman. --Wtshymanski 13:34, 26 August 2006 (UTC)

As an engineer for a company which is an end-user of these products, I agree with Wtshymanski. We absolutely prefer Modbus because it's universally useful - we don't need NDAs or expensive licensing fees to make devices work with our in-house software. Just a modbus mapping spec, a day or two writing a new device module for our software, and it just works. Contrast to Profibus or DeviceNET... not a happy experience. Even getting HART specs out of some device manufacturers is like trying to get blood out of a stone. For Modbus, companies like Emerson, General Monitors, etc. have an appendix in the user manual which is all you need to make things work. Generally, it's the DeviceNet/ProfiBus manufacturers who want to lock you into their software. Such manufacturers who want vendor lock-in do NOT use Modbus.

As someone who helps in software development for natural gas equipment, I would agree that Modbus is the most widely used. However this is from my point of view and I have no physical proof to back this up. I would agree that without references, that statement does not belong here.

Alshain01 13:05, 19 April 2007 (UTC)

Removed commercial (non free) link from Free section. Moved to commercial section -- user:wpostma