Introduction

This Driver implements the Modbus protocol, which allows an Elipse Software application to communicate with any slave device that implements this protocol in ASCII, RTU, or TCP modes.

This Driver always works as a master of a Modbus network. If users want to to communicate with master devices, then Elipse Software's Modbus Slave Driver must be used, which can be downloaded at company's website.

This Driver, starting with version 2.0, was developed using Elipse Software's IOKit library. This library is responsible for implementing the physical layer access (Serial, Ethernet, Modem, or RAS). For more information about IOKit library configuration, please check topic Documentation of I/O Interfaces.

It is recommended to start by reading topic Quick Configuration Guide if the device is fully compliant with standard Modbus protocol, defined by the Modbus Organization (modbus.org), and if users only want to read or write bits and registers, without using more advanced features of this Driver.

For a complete understanding of all this Driver's functionality, it is recommended to start reading, in this order, chapters Adding a Driver to an Elipse Software Application and Configuration.

To create large scale applications, it is also recommended to read topic Optimization Tips.

If users are not familiar with the protocol, please check topics The Modbus Protocol, Recommended Websites, Supported Functions, and Special Functions.