Interpreting Ladder Logic (A9602)

Learn how to interpret programmable controller ladder logic.

Prerequisites

This lesson is designed for participants familiar with the principles of programmable electrical print reading.

Description

This lesson teaches how to interpret programmable controller ladder logic. The lesson defines the program elements of ladder logic and the functions that they perform. This includes contacts, coils, and data functions as well as many of the common ladder logic arrangements.

Objectives

Interpret power flow in circuits containing many program elements. Circuits designed to start equipment. Start circuits with sealing (holding contacts). Stop circuits, and in circuits that contain the following: normally open contacts to represent normally closed field devices, timer functions, counter functions, math functions, data comparison functions and data transfer functions.