BASGLX-M1 | Modbus to BACnet gateway with virtual routing | Contemporary Controls

Features
      
Modbus remains a popular network interface. It
        is commonly found on jobs such as boiler control,
        variable speed drives, and metering applications, but
        these devices lack BACnet compliance. To make
        Modbus devices appear as individual BACnet
        devices a BASgatewayLX is used. This device
        has one 10/100 Mbps Modbus TCP or BACnet/IP
        Ethernet port and an opto-isolated Modbus EIA-485
        serial port for Modbus RTU or Modbus ASCII devices.
      
Up to 30 Modbus serial devices (represented by up
        to 1000 polled points) can share the single Modbus
        port on the BASgatewayLX. The virtual routing
        feature in the BASgatewayLX allows each connected
        Modbus device to appear as an individual BACnetcompliant
        device. What is needed is a device
        profile for each Modbus type device. Contemporary
        Controls maintains a library of common device
        profiles. If one is not available, Contemporary
        Controls will provide it upon request. Custom device
        profiles can be uploaded to the BASgateway. 
      
Using web pages and a resident database of
        common Modbus device profiles, Modbus data points
        from Modbus Serial or Modbus TCP devices can be
        mapped to BACnet objects.
      

        


          


            Gateway Functionality Between...
            
Modbus Serial (RTU or ASCII) and BACnet/IP
            
Modbus TCP and BACnet/IP
          
            

              Convenient Installation
              
24 VAC/VDC powered
              
DIN-rail mounting
            

          


            Routing Functionality Between...
            
Modbus Serial (RTU and ASCII) and Modbus TCP
          
            

              Flexible Communication Ports
              
10/100 Mbps Ethernet with auto-negotiation and Auto-MDIX
              
Opto-isolated serial port supports either 2-wire or 3-wire EIA-485
              
Jumper-selectable EIA-485 bias and termination
              
Baud rates from 2.4–115.2 kbps
            

        
      

      
Overview
      
The BASgatewayLX is housed in a metal case that
        mounts on 35-mm DIN-rail and it is powered from a
        24 VAC/VDC (± 10%) source. Its half-wave rectified
        power supply allows sharing of power with other
        half-wave devices.
      
The optically-isolated serial port allows for connection
        to either 2-wire or 3-wire EIA-485 networks using a
        removable 5-pin terminal block. Up to 30 EIA-485
        Modbus devices can share the serial bus at data
        rates between 2.4 and 115.2 kbps. Internal jumpers
        allow flexible bias and termination options. They can
        be removed for mid-span installations. 
      
The Ethernet port offers a shielded RJ-45 connector.
        Through auto-negotiation and Auto-MDIX, it
        automatically matches connections to the attached
        equipment. Therefore, either CAT5 straight-through
        or crossover cable can be used to attach to the
        BACnet/IP or Modbus TCP network at either 10 or
        100 Mbps speed.
      
 A resident web server allows for commissioning, and
        troubleshooting via a standard web browser. A reset
        switch is provided for returning to the factory default
        IP address. LED indicators provide communication
        status on both the Ethernet and serial ports.




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