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  • Modbus RTU

Does your device use a serial Modbus-RTU protocol? 

 

The Anybus Communicator lets you avoid the hassel of scripting and serial Modbus frame building. Your device is connected in just minutes following just six easy steps.

Serial Modbus-RTU device

How to configure 

The Anybus Configuration Manager included with the Communicator, is pre-configured for use with Modbus-RTU. It uses visual template wizards that guide you through the easy 6-step configuration. 

Modbus RTU Configuration Video

In the configuration video below we show how an ABB C100 temperature controller is network connected via serial Modbus-RTU. By selecting "Modbus-RTU Wizard" in the Anybus Configuration Manager you can see how this is easily done.

How it works

Modbus RTU is an open, serial (RS-232/422/485) protocol derived from the Master/Slave architecture. It is the most used serial protocol used today, mostly due to its ease of use and reliability. Modbus RTU messages are a simple 16-bit CRC (Cyclic-Redundant Checksum). The simplicity of these messages is to ensure reliability.

The Anybus Communicator functions as a Modbus RTU Master towards your connected serial-based slave devices. Towards the Controlling PLC, the Communicator is a slave device on the upper network.

The scenario below shows two examples of how devices can be connected to a control network using serial Modbus RTU via RS-232 to one device and RS-485 to multiple devices. The Communicator is a Slave/Adapter on the Fieldbus/Ethernet network but a Modbus RTU Master to the attached slave devices.

rtu-topology

Modbus RTU configuration highlights - Anybus Configuration Manager

The Anybus Configuration Manager (ACM) is included with the purchase of the Anybus Commuicator.

  • Communicator functions as a Modbus RTU Master towards the serial devices
  • Selectable RS-232/422/485 serial interface
  • Pre-configured Modbus commands. No scripting or serial frame building required!
  • Ability to make popular checksum calaculations 
  • In-built Line Listener to analyze serial telegrams on the sub-network
  • Multi-language support, supporting English, German, Spansh, Italian, French, Polish, Russian, Chinese and Japanese
  • Handy Save/Load function allows for a completed configuration to be re-used for many other installations
  • Password protection prevents unauthorized upload and download of configurations 

More information

Learn more about the Anybus Communicator

  • What you can do
  • How data is mapped
  • Verified devices
  • Case studies

Protocol Conversion

See the unique way the Communicator handles any serial/CAN based protocol without the need for any programming.

  • Modbus RTU
  • ASCII/Vendor specific
  • Rockwell DF1
  • CAN based
Select your Communicator version

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Industrial devices
PLC manufacturers
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Fieldbus and Serial
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