Connecting Lonworks to BACnet

You have two devices in two different buildings on two completely different networks, one that uses the Lonworks protocol to communicate, while the other one talks BACnet protocol and they need to talk to each other. What do you do?

A FieldServer is a protocol converter or gateway that can communicate in many different protocols and physical layers including Lonworks protocol and the BACnet protocol. The Fieldserver acts as a middle man between the two devices. It reads data from one device, stores it internally and makes it available to the 2nd device using another protocol. This is how the FieldServer converts Lonworks data to BACnet data.

It's a simple solution to a common problem that we can help you with.

Contact us:

Call us: 1-866-383-1657 (Toll Free) or (778) 370-3882


Lonworks is part of the Echelon family of protocols. With the help of FieldServer acting as a client and or a master we can set and retrieve Lonworks data from your device and make it available to many different devices no matter what protocol they use. The FieldServer can act as a protocol converter to convert the Lonworks protocol messages to an impressive set of other industrial automation, intelligent building, and building automation protocols. It works by talking Lonworks on one side of the network and anything else you want on the other. More information, Driver Data Sheet


There are a number of flavors of BACnet. Our gateways supports them all.

  • BACnet IP
  • BACnet Eth (802.3)
  • BACnet PTP
  • BACnet MSTP
  • BACnet ARCnet

  • You can read more about the flavors at this page: Flavors of BACnet
    Our gateways can act as clients / servers or both at the same time.

    Buy a BACnet Gateway and get Free BACnet Explorer Software included.

    More information

    BACnet to Modbus Gateways

  • BACnet IP to Modbus JBUS
  • BACnet IP to Modbus ASCII
  • BACnet IP to Modbus TCP
  • BACnet IP to Modbus RTU
  • BACnet IP to Modbus Plus (MB)

  • BACnet Ethernet to Modbus JBUS
  • BACnet Ethernet to Modbus ASCII
  • BACnet Ethernet to Modbus TCP
  • BACnet Ethernet to Modbus RTU
  • BACnet Ethernet to Modbus Plus (MB)

  • BACnet MSTP to Modbus JBUS
  • BACnet MSTP to Modbus ASCII
  • BACnet MSTP to Modbus TCP
  • BACnet MSTP to Modbus RTU
  • BACnet MSTP to Modbus Plus (MB)

  • BACnet ARCnet to Modbus JBUS
  • BACnet Arcnet to Modbus ASCII
  • BACnet Arcnet to Modbus TCP
  • BACnet Arcnet to Modbus RTU
  • BACnet Arcnet to Modbus Plus (MB)
  • Range of Conversion Solutions

    Depending on project requirements select from units with varying resources. and multi port devices. OEM and embedded solutions too.
    QuickServer 1010 2x RS485 1x Ethernet
    QuickServer 1011 1x RS485 1x Ethernet 1x Lonworks
    QuickServer 1020 1x RS485 1xRS232 1x Ethernet
    QuickServer 1021 1x RS485 1xRS232 1x Ethernet 1x Lonworks
    QuickServer Fieldbus 1x RS485 1x Ethernet M-bus or KNX
    FS20 Series 1x RS232/485 1x Ethernet 1x Lonworks
    FS25 Series 2x RS232/485 1x Ethernet
    FS30 Series 2x RS232 and 2x RS485 2x Ethernet 1x Lonworks FieldBus Support:eg Profibus, DeviceNet etcHot Standby Support
    FS40 Series 8x RS232 and 2x RS485 2x Ethernet 1x Lonworks FieldBus Support: eg DH+, MB+, Profibus, DeviceNet etcHot Standby Support
    SlotServer 1x RS232/485 1x Ethernet 1x Lonworks For Rockwell ControlLogix 5600
    Lonworks and Fieldbus are options not provided on base models.  

    Connection Diagram

    Purchase Now

    You can purchase some of these items now at We keep stock of most gateways and CAS can often ship for next day delivery. Often we need to do due diligence with you, check the number of devices, trunks, points , network routing and many other factors and thus we like a chance to chat to you, learn your project requirements and work with you to provide the most effective solution. Contact us.

    Configuration and Support

    With CAS you are purchasing a solution - not a commodity. If you ask CAS to do the gateway configuration for you then you are purchasing a solution from us and we will work with you to pre-configure the device, make changes as you require them, keep a backup of your files and provide support for you and your customer when installation is done.

    CAS are famous for a high level of effective and responsive support. We work with you using voice, email and remote desktop applications.

    Contact us

    We have the solution that you are looking for, please contact us today.

    Call us: 1-866-383-1657 (Toll Free) or (778) 370-3882
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