pinout (polarity), schematic

[krissn0]

Hi everyone.

So I have Vaillant ecoTec plus VU 15CS/1-5. And I see + and - on eBUS connector on vaillant. Which pin on C6 is plus which minus?

My boiler works with standard on off configuration (SE wiser controller) so I have nothing connected to eBus connector. Will I get some communication between C6 adapter and boiler when no other eBus devices connected?

Also where can I find schematic of eBUS Adapter Shield C6 ?

Regards
Kriss