The 1-Hour Modbus Rs485 Primer

Learn How to Interconnect Modbus Devices on an RS485 Network in just 1 HOUR!

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 Device Components

Lecture 9 Memory Address vs. Value

Lecture 10 Memory Block Sizes

Lecture 11 The Modbus Memory Map

Lecture 12 Modbus Memory Map Exceptions

Lecture 13 Determining I/O Mapping to Memory

Lecture 14 Application to our Design Problem

Section 5: Modbus Protocol Network Messaging

Lecture 15 Messaging Method

Lecture 16 Modbus Unit ID

Lecture 17 Modbus Request Commands

Lecture 18 Modbus Block Reads

Lecture 19 Application to our Design Problem

Section 6: The RS485 Serial Communication Standard

Lecture 20 Physical Connection

Lecture 21 Port Settings

Lecture 22 Application to our Design Problem

Section 7: Bonus Section - How to Always get the Lowest Prices for my Courses

Lecture 23 Bonus Lecture

Electrical Engineers,Electrical Technicians,Electrical Tech or Engineering Students,Process Control Technicians