Operator Interface for SCADA System
Operator interface or human-machine interface (HMI) for SCADA systems provide the functions of status indication, alarm reporting, operator intervention in
PLC Tutorials
Tutorials of Programmable Logic Controller – Learn PLC programs and ladder logic lectures of GE, ABB, Siemens, Allen Bradley, Omron PLC’s.
PLC Program to Simulate Gate Array Logic
Develop a PLC program that will simulate the gate array logic as shown in the below figure. Gate Array Logic
Basics of Industrial Communication Networks
Communication networks may be used in control systems to pass data between field devices and PLCs, between different PLCs, or
PLC Programming Example for Motor Forward and Reverse Control
Make the example ladder logic to control the motor in forward and reverse direction using PLC Programming with limit switches
Data Handling Instructions in PLC Programming
We already discussed Timers, counters and other instructions used in PLC programming. Sometimes we may need some operations in the
Program Flow Control Instructions in PLC Programming
Program Flow Control Instructions used to control the sequence in which your program is executed. Control instructions allow you to
Comparison Instructions in PLC Programming
Comparison instructions in PLC are used to test pairs of values to condition the logical continuity of a rung. Thus,
Types of Instructions in PLC Programming
What is a Ladder Diagram? A Ladder Diagram is one of the simplest methods used to program a PLC. It
How to use JUMP Instruction in PLC Ladder Logic?
Jump instruction in ladder logic is used to skip some process or rungs according to the requirement. It is paired
How to Use Encode and Decode Instructions in PLC ?
In this article, we discussed Encode (ENC) and Decode (DCD) Instructions application in PLC ladder logic with example programs. In