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Practicing Technician Series

PLC Programming Errors and Oversights - Part 2

June 18, 2020
PLCLogix Simulation

In our last installment of the Practicing PLC Technician Series, we examined some of the common approaches used when programming PLCs for industrial applications. In this installment we will examine some of the most common programming errors and oversights that occur when working with the instructions we have covered to date in our ongoing series. Here are some basic programming oversights and issues to watch out for.  

Standard Practices And Errors Encountered By Beginners When PLC Programming - Part 1

February 28, 2020
Typical seal in rung

Over these next two installments of our ongoing Practicing PLC Technician Series we will examine some common programming concepts  as well as some of the most common programming errors that occur when utilizing the instructions we have covered in basic control applications.

The Basics Of PLC Programming – Part 4

January 21, 2020
Counter Ladder Logic Circuit

In this installment of our ongoing Practicing PLC Technician Series, we will expand on our knowledge of the virtual counterparts to real world field equipment already familiar to PLC technicians working in industry today.  The last physical device we will be examining is the counter.

The Basics of PLC Programming - Part 3

November 04, 2019
SQO Instruction

In this installment of the Practicing PLC Technician Series, we continue our investigation into some of the ladder logic instructions that are based on real world field equipment familiar to the technicians of today.  We have covered virtual coils and contacts, as well as timer instructions used for time driven program segments. Here we will be taking a look at a simple Event Driven program segment using another staple of relay logic control systems, the drum sequencer.  This real world contr

The Basics of PLC Programming - Part 2

September 06, 2019
Cascaded Timers

In our last installment of the Practicing PLC Technician Series, we began to look at some of the similarities between relay logic control circuits and plc ladder logic programming.  Over the next few blogs, we will further examine some additional instructions that are based on real world field equipment or devices that have been included in the ladder logic programming approach available for programming modern PLC’s.

Basic Instructions and Operation of a PLC - Part 1

July 22, 2019
PLC Components

In this installment of the Practicing PLC Technician series, we are going to look at the basic structure of a PLC and how it operates. 

File Based Addressing Tips - Part II

April 18, 2019
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In our second installment of the Practicing PLC Technician series, we continue our examination of the basics of File Based Addressing for students and practicing PLC technicians.  In our last article, we examined the overall data file system used.  We defined the default file types used in files 0 – 8.  We then moved on to discuss the default data files specifically relating to inputs and outputs.  Each of these files is comprised of memory locations made up of 16 bit words.  Each word corres

File Based Addressing Tips - Part I

March 26, 2019
Memory Allocation

This is the first in a series of brief articles discussing important topics specific to PLC (Programmable Logic Controller) technicians and technician students preparing for a role in an increasingly automated workforce. In this series we will be discussing skills and knowledge unique to the understanding of PLC’s.