Supported interfaces

Although the VBus is a serial data communication interface like RS-232 or RS-485, it uses its own signal specification which is incompatible to most industry standards. That means that a converter is needed to convert between the VBus signal and an industry standard interface for further data processing.

This document provides some of the interfaces and converters that are known to work in conjunction with the resol-vbus-core* set of libraries.

If you have built you own converter and would like to share it with the community, please create a pull request to this page including the details.

Industry standards interfaces support in resol-vbus-core*

The two major categories of supported industry standard interfaces that are currently supported by the resol-vbus-core* set of libraries are:

• TCP/IP over Ethernet or WiFi
  • Uses the VBus over TCP protocol
  • Supported by the NetLiveTransceiver class in resol-vbus-core-nodejs
  • See this guide for integration details
• Other serial port interfaces
  • Use a third-party library like e.g. serialport in combination with LiveTransceiver class in resol-vbus-core
  • See this guide for integration details
  • Examples for these converters include:
    • Converters between VBus and USB
    • Converters between VBus and TTL-UART (e.g. for Raspberry Pi or other microcontrollers)

Industry standard interfaces offered by RESOL

Products with integrated industry standard interfaces

Some RESOL controllers already provide the VBus data over an industry standard interface. Those include:

| Product | Industry standard(s) | |:--|:--|:--| | RESOL DeltaSol MX Plus | TCP/IP over Ethernet and/or WiFi | | RESOL DeltaTherm PV MAX | TCP/IP over Ethernet | | RESOL DeltaSol SLT with LAN (discontinued) | TCP/IP over Ethernet, Serial port over USB |

Standalone converters

In addition to the products above RESOL also offers standalone converters. Those include:

Product	Industry standard(s)
RESOL DL2 Plus	TCP/IP over Ethernet and/or WiFi
RESOL KM2	TCP/IP over Ethernet and/or WiFi
RESOL VBus/USB	Serial port over USB
RESOL DL2 (discontinued)	TCP/IP over Ethernet
RESOL DL3 (discontinued)	TCP/IP over Ethernet
RESOL KM1 (discontinued)	TCP/IP over Ethernet
RESOL VBus/LAN (discontinued)	TCP/IP over Ethernet

Industry standard interfaces offered by the community

Converter	Industry standard(s)
Forum post "Resol data to 3.3V (adapter schematic)" by Robert	Serial port over TTL-UART

Industry standard interfaces that most likely will not work

• RS-485 interface connected to the VBus
  • The signal specifications of RS-485 is incompatible with the VBus signals
  • Some RS-485 transceivers might work, but most tested transceivers don't