621-02 - Input/Output (I/O) Processing

621-02 - Input/Output (I/O) Processing

Learning objectives

  • Describe various error checking methods
  • Compare volatile and nonvolatile memory and provide example types of each
  • Describe data table structure within the CPU memory
  • Discuss the addressing of the I/O modules
  • Describe memory maps and their function
  • Describe I/O module structure

Course overview

The previous lesson discussed how a programmable logic controller (PLC) is a specialized type of computer. A PLC monitors inputs and other variable values, makes decisions based on a stored program, and controls outputs to automate a process or machine. Understanding a PLC's memory and error detection processes helps understand PLC program operation. The Input/Output (I/O) Processing training course discusses I/O error checking and its impact on communication and function. It also identifies the types and structure of PLC memory and describes how memory interacts with the peripheral I/O. This online training course focuses on error checking, memory types, memory organization and I/O interaction, and configuring PLC memory - I/O addressing. Input/Output (I/O) Processing is part of the Programmable Logic Controllers training series.

The individuals involved in the development and promotion of this course do not receive any compensation or financial benefits outside of their regular employment for their work on this course.


  • 60 minutes
  • Format: Online Interactive
  • Tier: 3
  • Course ID: 4970
Language Icon English
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