View Full Version : Wireless - Bacnet, MS/TP, RS422 etc?
02-23-2009, 03:15 PM
Does anyone have any successful experience using RF to transmit their communications protocol?
The product cut sheets indicate they should work but I am looking for real world success. How far and how reliable they can transmit. Any drop out of signal or interference?
03-23-2009, 11:20 AM
You could call for references.
03-23-2009, 11:43 AM
Check out B&B Electronics. They have several differnent wireless options for RS-485. They can do some pretty amazing things with there products. I have never used them because I do mostly hospitals and critical care areas and they don't like wireless signals floating around, but from what I've heard they work pretty good.
03-23-2009, 03:25 PM
We have an integration consultant that really likes the spinwave stuff. I think it is all modbus. I'm not sure if that is a concern to you at all.
03-25-2009, 02:00 AM
I did a school last year with Spinwave sensors and two of their bacnet bridges intergrated into a Reliable Control system.
Plus: Their controls have a power saving mode, use both mesh and frequency jumping and seem are both reliable and economically priced.
Con: Had some learning curve problems, plus some issues with their components having different software revisions which wasn't real fun.
But proof is in the pudding and only had minor problems since.
All in all would only go wireless when it isn't physically possible to get a wire from a to b, (like in this instance). One thing is that it adds another whole level of stuff that you have to really stay on top of, like sensor and receiver id and locations. That doesn't sound like much, but the sensors install so fast and can be moved so easily that on a big job it easy to get sideways if youre not careful. hope that helps.
The guys at N.E.C.C have mentioned to me a wireless Lon system that they say can do "miles" of distance transmitting Lon. Give them a call.
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