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double submit - closing.
2009-04-15 17:05:39 UTC by obormot
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something goes wrong after this:
1.038: receive-i-am: From Device 16
1.038: receive-i-am: npdu snet=3 slen=6 local=0
1.038: receive-i-am: device snet=3 slen=6 local=0
1.038: receive-i-am: npdu src_mac=00:00:00:00:00:00 src_ip=192.168.103.19
1.038: receive-i-am: device src_mac=00:00:00:00:00:00 src_ip=192.168.103.19
2.002: MAIN: Delaying query: 2 seconds of 5 seconds.
3.002: MAIN...
2009-04-15 13:29:46 UTC by obormot
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something goes wrong after this:
1.038: receive-i-am: From Device 16
1.038: receive-i-am: npdu snet=3 slen=6 local=0
1.038: receive-i-am: device snet=3 slen=6 local=0
1.038: receive-i-am: npdu src_mac=00:00:00:00:00:00 src_ip=192.168.103.19
1.038: receive-i-am: device src_mac=00:00:00:00:00:00 src_ip=192.168.103.19
2.002: MAIN: Delaying query: 2 seconds of 5 seconds.
3.002: MAIN...
2009-04-15 13:05:50 UTC by obormot
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OK, understood - thanks.
Is the write stuff hard to do (if, for sake or argument, I had a spare BMS system that could cope with being broken)?
The job I need to do requires setpoint writes so BACnet4linux would be out right now, but I'd like to put some effort into it and see what I can do, as I'm otherwise faced with some fairly expensive, inflexible and over-the-top solutions (usually...
2006-08-11 16:25:51 UTC by hollymcr
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'Write' operations are less benign than 'reads', because the possibility exists to do harm, if there are errors in the write messages. If your only development platform is a live, functioning buliding control system, then testing new code is perilous. Hence, less development work has been done for writing than reading.
In teory, you can use bacnet4linux to test against itself. However, I...
2006-08-11 16:00:37 UTC by thenbomr
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How little is the "little" in "little to no write capability"?
Is there a fundamental reason why writing is hard work, or has it just not been needed?
I will need some writing for my application, but I'm prepared to hack the code if there's a possibility I'll succeed! If others before me have failed, though, I'd be way out of my depth.
I don;t have any BACnet kit to...
2006-08-11 08:59:56 UTC by hollymcr
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BACnet as a standard is mature, complete, and seems to me to be well thought out. My only complaint is that there is a lot of extra work in handling packets, where the objective seems to be network bandwidth conservation. I question whether the effort is worthwhile with today's technology.
BACnet4linux has little to no 'write' functionality. You will probably not need much BACnet experience...
2006-08-10 17:08:36 UTC by thenbomr
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I'm new to BacNet but have a project I'd like to experiment with. Basically I have some hardware which talks BacNet and some hardware which talks something else, so I need to write a little gateway for it.
Is BacNet a suitable product to start with? I believe that I only need fairly minimal capabilities for this application (read and write from/to a few objects).
At least in part I'm...
2006-08-10 10:22:22 UTC by hollymcr
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Ok, after looking through the code I think this is meant to work but that write property (which is what I really want) has not been implemented.
When I get some time I will see where I can take it.
2006-03-14 10:41:52 UTC by while_1_fork
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Hi,
I have been able to use the program to browse a Delta network and it works well.
One thing I've noticed is that when you click on an object in the browser no property name or value is displayed. With ethereal I can see a read property request is sent and acknowledged.
I've also tried it with the demo server in the bacnet stack package but it does the same thing.
Is this a bug or is it...
2006-03-11 12:25:52 UTC by while_1_fork
