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Modbus RTU to BACnet MS/TP & BACnet IP Protocol Converter

E8951 $836.80 EA

  • Overview
  • Series Specifications

The E8951 Modbus to BACnet Protocol Converter enables easy integration of a broad
selection of Veris meters with Building Automation Systems via BACnet protocol.
When networked, the E8951 detects supported Modbus meters and gives them
a unique BACnet Device ID and full set of measurement data and configuration
objects. Simply select the desired MS/TP baud rate using DIP switches or configure
the IP interface using the integral web server, and the supported Veris Modbus
meters are available as fully-supported BACnet devices.


  • Energy Management with Building Automation Systems
  • Integrated metering of HVAC systems and chillers


  • Enables Veris Meter access via BACnet MS/TP and/or BACnet IP
  • Supports a broad range of Veris meters - H8035, H8036, H81xx with H8163-CB, H8238, H8436, H8437, H663, H704, E50C2, E51C2, E50C3*, E51C3*,E30Axxx, E30Bxxx, E30Cxxx, E31Axxx, E31Bxxx, E31Cxxx, U013-0010, U013-0011
  • Each E8951 can support up to 10,000 BACnet measurement points (or 32 meters max, if <10,000 total points)
  • Simultaneously supports mixed meter types (with common baud rate)
  • Can provide SNMP support for a single E3xxxxx branch circuit monitor
  • Supports Modbus pass-through communication simultaneous with BACnet or SNMP conversion
  • Simple to set up...automatically detects supported meters and configures BACnet objects
  • Presents a Device object and data objects for every meter
  • BTL certified
  • BBMD functionality
  • No manual mapping of Modbus points required
  • Presents a separate device object for each meter attached
  • Easily configure protocol parameters with the integral web server
  • PC-based discovery tool simpifies IP configuration
  • Can be mounted on DIN rail or wall

Downstream (device) Interfaces:

  • Physical Layer: 2-wire RS-485
  • Protocol: Modbus RTU
  • Baud Rate: 9600 to 38400 (selections vary with Modbus devices used)

Upstream (controller) Ethernet Interface:

  • Physical Layer: 10/100 Mb Ethernet
  • Protocol: BACnet IP (w/simultaneous Modbus TCP) or SNMP (w/simultaneous Modbus TCP)

Upstream (controller) Serial Interface:

  • Physical Layer: 2-wire RS-485
  • Protocol: BACnet MS/TP
  • Baud Rate: 300-115,200

Input Power Requirements:

  • Supply Voltage: 9-30VDC or 12-24 VAC
  • Nominal Current Draw @ 12V: 240mA


  • Operating Temperature: -40°C to 60°C (-40°F to 140°F)
  • Relative Humidity: 5-90% RH noncondensing