BACnet devices discovery over different network subnets

[maherhodali]

Hello Everyone,

I'm trying to discover BACnet devices over different subnets, Delta (DSM-RTR) and Notifier BACnet Gateway-3, each of these devices has slaves controllers under the MS/TP network, I don't have BBMD hardware and I don't want to use it as I'm using direct discovery method !.

I tested this method over WinCC OA with johnson controllers (NAE/NCE) and I was able to discover it successfully (Only the router controller).


Is it possible to discover the MS/TP devices through (delta/notifier routers) in WinCC OA using this method ? is this method supported in WinCC OA 3.16 ?. If yes, please share the settings, if no what other options do we have rather than BBMD hardware to discover devices ?

The config file entries are not changed in my test. and on the BACnet driver config: Address binding was static and IP for BACnet router was inserted, network ID remains 1, and port is 47808.

check attached image, please

Thanks

[Asem Bani Salameh]

Good day all,

I will try to explain what Maher said in other words.

While working with BACnet Scanner in wincc it’s not possible to Scan objects or use the dynamic link for the devices over different Subnets ( a foreign one rather than where the wincc project is located) .So to solve this we have used the static binding by filling the IP address of the BACnet router by ourselves.
However, while using this method a lot of BACnet devices where all tags are located in the Router itself were discoverable (tags are located in the router talking BACnet IP). But the issue is when we are trying to deal with other kind of devices where there is no tags in the Router but it acts just as a path to the slave controllers which are using BACnet MSTP ; in this case we can see the Router Online but can’t detect or read the sub BACnet devices.

Note: We are capable to discover all the MSTP devices and related Objects while we are scanning within the same Subnet .

As a summary is Wincc OA capable to read MSTP Devices that are located under the IP router using the Static binding from different Subnet.

Regards and thank