In BAC0, Is it possible to expose actual points to Bacnet Server Points ?

[Daniel-V-Richardson]

Hello, I don't know whether my question makes any sense, but i have a requirement and i don't know how to achieve it.

I have Created a network with the below details : client = BAC0.lite(ip=networkAddress, port=networkPort, deviceId=device_id) After this i am discovering devices and adding them to my db and then adding points for each device respectively to my db aswell. I am using Room Control Simulator as a Bacnet Device and it's points.

Now I need to export these Imported DB Points as Bacnet points based on the client which i had created before, and i can do this by using object factory, which is working fine. But my requirement is, I need to establish a link between the exported bacnet point and the actual point. Which means if i try to update the setpoint1 of the exported point. then it should also reflect on the actual setpoint1.

I am trying to achieve this functionality for a long time but I am a beginner to field and i don't really get the entire picture. Please Help me out!

Thanks.

[bbartling]

maybe check out #381 for the fake AHU simulator code. Run it on some device and then on another device on your LAN discover it and the points. Don't test 2 BBACnet applications on the same OS but 2 separate devices/hardware networked together.

https://github.com/ChristianTremblay/BAC0/issues/381

[Daniel-V-Richardson]

@bbartling This (#381) script is just trying to simulate a bacnet device which is then discovered by another device. But want i wanted was kinda different. For example I have a bacnet device let's say an AHU device exposed on port 47808 simulated by niagra, and i have discovered it and enabled polling in my BAC0 application which used BAC0 library, now i want to export the same points of the simulated AHU on port 47809 which will be exposed as BAC1 points from my application. Now if i dicover the BAC1 device's points in another device i want the actual polling of the Original AHU's points to be happening, and also if i try to write to any point it should write not only the exported point from BAC0 device but the original point too. I don't know if i'm clear enough but this is what my understanding and requirement is. Thank You for your reply.

[bbartling]

I think you need a BBMD, right @ChristianTremblay/BAC0 @.***> ?

You can run 2 BACnet apps on one OS but I they need a BBMD to route data between them. I have actually never done this before.

That's what you want right? Run 2 apps on one machine and then read/write between the two?

On Sat, Mar 30, 2024, 6:38 AM Ʀɨ¢Ϧ♬Ʀᖱន០⩎ @.***> wrote:

@bbartling https://github.com/bbartling This script is just trying to simulate a bacnet device which is then discovered by another device. But want i wanted was kinda different. For example I have a bacnet device let's say an AHU device exposed on port 47808 simulated by niagra, and i have discovered it and enabled polling in my BAC0 application which used BAC0 library, now i want to export the same points of the simulated AHU on port 47809 which will be exposed as BAC1 points from my application. Now if i dicover the BAC1 device's points in another device i want the actual polling of the Original AHU's points to be happening, and also if i try to write to any point it should write not only the exported point from BAC0 device but the original point too. I don't know if i'm clear enough but this is what my understanding and requirement is. Thank You for your reply.

— Reply to this email directly, view it on GitHub https://github.com/ChristianTremblay/BAC0/issues/444#issuecomment-2028022345, or unsubscribe https://github.com/notifications/unsubscribe-auth/AHC4BHL7VDAJV3T34NDJ6ADY22P2FAVCNFSM6AAAAABDO5FNG2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDAMRYGAZDEMZUGU . You are receiving this because you were mentioned.Message ID: @.***>

[ChristianTremblay]

Not sure why you need that. From BAC1, you can point directly to BAC0 (the port, not the app) using unicast (a direct connection). I see no need for an intermediate device.

BBMD are used to make broadcast messages work on different subnets. If you know where to connect and don't need broadcast, a direct connection will work.

[Daniel-V-Richardson]

I think you need a BBMD, right @ChristianTremblay/BAC0 @.> ? You can run 2 BACnet apps on one OS but I they need a BBMD to route data between them. I have actually never done this before. That's what you want right? Run 2 apps on one machine and then read/write between the two? … On Sat, Mar 30, 2024, 6:38 AM Ʀɨ¢Ϧ♬Ʀᖱន០⩎ @.> wrote: @bbartling https://github.com/bbartling This script is just trying to simulate a bacnet device which is then discovered by another device. But want i wanted was kinda different. For example I have a bacnet device let's say an AHU device exposed on port 47808 simulated by niagra, and i have discovered it and enabled polling in my BAC0 application which used BAC0 library, now i want to export the same points of the simulated AHU on port 47809 which will be exposed as BAC1 points from my application. Now if i dicover the BAC1 device's points in another device i want the actual polling of the Original AHU's points to be happening, and also if i try to write to any point it should write not only the exported point from BAC0 device but the original point too. I don't know if i'm clear enough but this is what my understanding and requirement is. Thank You for your reply. — Reply to this email directly, view it on GitHub <#444 (comment)>, or unsubscribe https://github.com/notifications/unsubscribe-auth/AHC4BHL7VDAJV3T34NDJ6ADY22P2FAVCNFSM6AAAAABDO5FNG2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDAMRYGAZDEMZUGU . You are receiving this because you were mentioned.Message ID: @.***>

Yeah Exactly That's what i want

[Daniel-V-Richardson]

Not sure why you need that. From BAC1, you can point directly to BAC0 (the port, not the app) using unicast (a direct connection). I see no need for an intermediate device.

BBMD are used to make broadcast messages work on different subnets. If you know where to connect and don't need broadcast, a direct connection will work.

Yes I understand it's kinda unnecessary, but i just wanted to try it out as niagra does it pretty efficiently, and not only bacnet to bacnet, i also wanted to expose modbus points to be converted as Bacnet points from my application too.

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