The 1-Hour Modbus Rs485 Primer

What you'll learn
Understand the difference between Modbus and RS485
Modbus Protocol theory
RS485 theory
Modbus memory mapping
Modbus network communication
The essential device information required for Modbus connection
The steps involved in the connection of devices via Modbus
Requirements
Working knowledge of the process control devices in a typical Process Automation or SCADA system
Description
The Modbus protocol is the oldest and still by far the most popular automation protocol in the field of process automation and SCADA. Knowing how to create Modbus based networks that run on the RS485 serial communication standard is essential for any electrical technician and engineer working in these fields. Being able to integrate devices from different manufacturers is a skill that is in demand and will ultimately make you more valuable and marketable in the industry.
This course gives you the theory behind the Modbus Protocol as well as RS485. It then goes on to show you how they work together to create a Modbus RS485 network.
After completing this course, you will be able to integrate devices from the same manufacturers and different manufacturers, that are Modbus compliant, to form a complete seamless network.
Overview
Section 1: Introduction
Lecture 1 Introduction
Lecture 2 Accessing Attached Resources and Setting Optimal Video Resolution
Section 2: A Brief History
Lecture 3 History of the Modbus Protocol
Lecture 4 History of RS485
Lecture 5 Common Misconceptions
Section 3: Course Problem to be Solved
Lecture 6 The Design Problem
Section 4: The Modbus Protocol Memory Map
Lecture 7 Modbus RTU vs. ASCII
Lecture 8 Modbus...

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