Introduction

This Driver allows communication between Elipse Software applications and external devices that support the Modicon Modbus RTU/ASCII/TCP standard protocol. This Driver was designed to operate in Slave mode, in which an Elipse Software application works as a Slave and an external device works as a Master in communication transactions and it supports the following functions:

•Reading Status Bits: Function code 1 (one), 0x references

•Reading Input Bits: Function code 2 (two), 1x references

•Reading Multiple Registers: Function code 3 (three), 4x references

•Reading Multiple Input Registers: Function code 4 (four), 3x references

•Writing to a Single Bit: Function code 5 (five), 0x references

•Writing to Multiple Bits: Function code 15, 0x references

•Writing to a Single Register: Function code 6 (six), 4x references

•Writing to Multiple Registers: Function code 16, 4x references

•Reading Diagnostics: Function code 8 (eight)

These functions are universally implemented and fully consistent with systems compliant with the Modbus RTU/ASCII/TCP protocol.