The use of a Modbus gateway opens the door to using industrial equipment in non-industrial applications for facility management. Modbus is one of the most widely used industrial network protocols available. Many types of industrial equipment are also useful in building automation applications, including PLCs, VFDs, power monitoring equipment, and more. Building management systems most often use other protocols such as BACnet. Industrial power monitoring equipment is also useful in data centers which most commonly use SNMP as the primary network protocol.

Modbus protocol converters, also known as gateways, convert Modbus protocol to other network protocols such as BACnet, SNMP, or LonWorks. Protocol conversion involves more than simply retransmitting data. Data is encoded differently in different protocols, and the gateway or protocol converter needs to understand both protocols well enough to decode and re-encode the data as necessary.

Modbus gateway devices in the Control Solutions Babel Buster family of gateways include Modbus to BACnet protocol converters, Modbus to LonWorks protocol  converters, and Modbus to SNMP protocol converters.

Modbus gateways are used to connect non-Modbus devices to a Modbus network, or vice versa. Remapping registers to make a new Modbus slave emulate an old Modbus slave is another application of a Modbus gateway. Translating Modbus RTU to Modbus TCP or vice versa is also a common application of a Modbus gateway. Data flow is generally bidirectional, subject to the rules of the protocol.

All Modbus gateways in the Babel Buster family are remapping gateways except those whose model number ends with “-GW”. These non-mapping gateways simply re-encapsulate the exact same Modbus request, transferring verbatim from Modbus RTU to Modbus TCP or vice versa. No protocol translation is done by the non-mapping gateways.


Our Most Popular Modbus to SNMP Gateway

Babel Buster SPX SNMP to Modbus Gateway

Babel Buster SPX
• Connect Modbus RTU and Modbus TCP Devices to SNMP
• Connect SNMP Devices to Modbus Network
• Modbus RTU RS-485 Master or Slave
• Modbus TCP Client and Server
• SNMP v2c client and server
• SNMP Get/Set access to all data points
• SNMP trap generation, user programmable criteria
• Configured via internal web server
• FCC, CE Mark
• Software Included, No Drivers to Buy

Our Most Popular Modbus to BACnet Gateway

Babel Buster BB2-7010 BACnet IP to Modbus or SNMP Gateway

BB2-7010 Modbus RTU and TCP to BACnet IP
• Connect BACnet IP Devices to a Modbus RTU or TCP Network
• Subscribe to COV on Changes from Modbus or BACnet
• Up to 1000 BACnet Objects and 1000 Modbus Holding Registers
• BACnet Input, Value, Output objects for Analog, Binary, Multistate
• Optional mapping of Modbus Registers as Coil, Discrete, Input, Holding
• Optional SNMP client and server, includes trap send on threshold
• FCC, CE Mark, UL 916 Listed
• Software Included, No Drivers to Buy


 Read more about Modbus to BACnet Gateways...

 Read more about Modbus to SNMP Gateways...

 Read more about LonWorks to Modbus Gateways...

 Learn about Converting Proprietary Serial Protocols to Modbus

Follow links below to find the model that fits your application. You will find detailed information for each model, including User Guide and How-To videos.

 Find Gateway Models with Modbus Support

 Find Gateway Models with BACnet Support

 Find Gateway Models with SNMP Support

 Find Gateway Models with LonWorks Support

 Use Gateway Selection Guide

Babel Buster®... The Modbus Gateway Brand Everybody Remembers.


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