CD Industrial Group Inc.

Simulations & Hands-On Learning Challenges

Level III

2 Day

$1445

Instructor-Led Course

Serial Communications: RS-232, RS-485, Modbus Serial, Modbus+

This course teaches the fundamental principles of serial communications for the process environment. Electronics technicians and instrumentation specialists learn the layers, protocols, limitations and electrical parameters, involved.

The Modbus serial protocol and message format is thoroughly covered along with the register map and exception codes.

Modbus Plus networking with its node structure token rotation is taught, along with addressing, cabling and use of taps and terminators.

Basic Principles Of Digital Communication

Objectives:

Explain basic principles of digital communication
Describe key features of RS-232 and RS-485 standards
Describe device interfacing and cabling configurations
Measure signals and test cabling
Configure serial communications adaptors

Activity: Utilize a RS-232 break-out box to confirm pin assignment and device role

Master the basics of serial communications!

Modbus Serial Protocol

Objectives:

Describe the Modbus Serial protocol
Explain the Modbus Serial protocol structure
Interpret Modbus Serial exception responses
State modes of operation
Troubleshoot cabling and software problems
Configure and adjust serial communications settings in Modsoft 2.6 software

Activity: Use a Modbus simulator and work with RTU and ASCII mode states

Know your master-slave, query-response communications

Modbus Plus Network

Objectives:

Describe the Modbus Plus topology and structure
Modbus Plus cabling
Installing taps and testing connections
The Modbus Plus network
Modbus Plus network troubleshooting

Activity: Cable and install three types of Modbus Plus taps

Use MBP Stat software to diagnose like a pro!

Where to go from here?

Serial Communications Basics is part of a general instrumentation training plan, to prepare students for PID Control System Troubleshooting, and our advanced class, Applied Automation & Process Control.

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