Discovering Gateway Powertag Link

[Breina]

I've got a stand-alone Gateway Powertag Link HD (A9XMWD100) and wish to talk with it to write an integration for a home automation system.

I can discover it through DWPS and fully communicate it with modbus. However, to make my integration fully plug&play, I need to know the modbus TCP port that has been configured. Otherwise my users will need to enter it manually, or I would need to resort to port scanning.

The EcoStruxure Power Commission app uses TLS communication in between the DWPS and Modbus TLS steps. Is there a something that I can leverage to do the same?

[Romain_Polette]

Hello @Breina , 

Can you precise your need ?

Default Modbus TCP Port for PowerTag Link is 502 (for any communication with upstream system).

https://www.productinfo.schneider-electric.com/powertaglinkuserguide/powertag-link-user-guide/Englis...

Regards, 

[Breina]

Hi Romain,

My use case is the following;

User opens home automation app -> Sees notification that a new integration is found -> It just works

I am certainly able to 'guess' port 502, but would like to 'know' it, if the information is available. 

So far I've found 

GET /rs/ModbusTCPServerNetworkService

but that requires authentication, which wouldn't make it plug&play.

I've got a hunch that through the SOAP interface, there's more information to be found. Currently I'm using DPWS to find some metadata, but it seems like the interface has more to offer;

<wsd:Types>dp:Device se:Device se:GatewayServer</wsd:Types>