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Logic Machine Forum › LogicMachine eco-system › Gateway v
BAcnet BBMD

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BAcnet BBMD
jmir Offline
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#1
30.04.2021, 15:10 (This post was last modified: 30.04.2021, 15:12 by jmir.)
Hi,
I'm trying to use LM5 as Bacnet Server and I've a doubt.
Can LM5 act as BBMD? Or are the parameters inside "BACnet Setting" tab used to connect to a BBMD?

Which is the best way to communicate a Bacnet Server to a Bacnet Client when they are in different networks through a router?

Thanks.
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Daniel Offline
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#2
30.04.2021, 15:11
Bacnet Client must have BBMD and LM can connect to it.
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jmir Offline
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#3
30.04.2021, 15:32
(30.04.2021, 15:11)Daniel. Wrote: Bacnet Client must have BBMD and LM can connect to it.

If the Client is on the WAN side of the router, is only one BBMD needed on WAN side?
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Daniel Offline
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#4
30.04.2021, 15:35
I'm not the expert on this but I think yes.
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Erwin van der Zwart Offline
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#5
01.05.2021, 17:10 (This post was last modified: 01.05.2021, 17:29 by Erwin van der Zwart.)
You must see a BBMD as a tunnel between 2 BACnet networks, it takes a broadcast message from network 1 as unicast message and broadcast it on the secondary network again. Only ONE BBMD should be configured per TCP/IP subnet. I repeat ONLY ONE !  Just like KNX routers you can only have one tunnel between your 2 networks to avoid loops.

As you can see in this image you need a BBMD in each network, if you only have one BBMD you might want to register it as foreign device..
   
   
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