IOTech Systems Limited

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Modbus connectivity logo | IOTech Systems

Easily read and write data to Modbus devices over both TCP and serial networks with IOTech’s high-performance Modbus device connector

 

What is Modbus? 

  • Modbus is a widely used open communications protocol for delivering data between control systems and devices
  • Modbus is prevalent in multiple industries including Power Systems, Industrial Automation and Buildings Management
  • It was initially developed to reliably transmit control and instrumentation data between devices over serial lines
  • A Modbus master device can write data to or request data from a Modbus slave device
  • Modbus RTU is used in serial communication and transmits its data frames with a checksum to ensure the reliability of the data across the serial lines
  • Modbus TCP/IP delivers the Modbus data over Ethernet using TCP/IP frames and therefore does not require the same error checking as Modbus RTU

IOTech's Modbus device connector supports both Modbus RTU and Modbus TCP variants and a wide variety of functionality including performance gains from batch reading and writing data

 

The Modbus device connector implements the following key features:

  • Support for both Modbus RTU and Modbus TCP devices
  • Read operations for input statuses, coils, input registers, and holding registers
  • Write operations for coils and holding registers
  • Batch (multi) read operations for input statuses, coils, input registers, and holding registers
  • Batch (multi) write operations for coils and holding registers
  • Support for Boolean, Int8, Uint8, Int16, Uint16, Int32, Uint32, Int64, Uint64, Float32, Float64 and String data types
  • Support for byte and word swapping for Int32, Uint32, Int64, Uint64, Float32, and Float64 data types which is required for communication with some Modbus devices
  • Support for reading individual Boolean bits from input registers and holding registers
  • Support for writing individual Boolean bits to holding registers
  • Support for the base address mechanism required for communication with some Modbus devices

If you would like more information on IOTech’s Modbus device connector please contact us 

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