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Learn Programmable Logic Controller (PLC)

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Learn all about Programmable Logic Controller (PLC).

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The below articles covers Basics of PLC, PLC Logic & Functions, PLC Programming, PLC Logic
examples, PLC Programming questions & answers, PLC Interview Questions & Answers, PLC
Programming Questions & Answers and PLC Ladder Logic Questions & Answers

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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
https://instrumentationtools.com
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Basics of Programmable Logic Controller (PLC)

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1.
What is a Programmable Logic Controller ?

2.
History of Programmable Logic Controllers (PLC)

3.
Overview of SCADA

4.
Difference between DCS, PLC, and RTU ?

5.
DCS Architecture Vs PLC Architecture

6.
What is a Human-Machine Interface (HMI) ?

7.
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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
https://instrumentationtools.com
Essential Documents in a PLC System

8.
Alarm and Trip Documentation

9.
Basics of Switches – NO/NC Contact

10.

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What Sinking & Sourcing ?

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Relay circuits

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What is Ladder Diagram ? To
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PLC Logic & Functions

1.
Introduction to PLC Ladder Diagrams

2.
PLC Logic Functions

3.
PLC Latching Function

4.

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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
https://instrumentationtools.com
PLC Multiple Outputs Configuration

5.
PLC Program Examples

6.
Equivalent Logic Gates & PLC Ladder Diagrams

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PLC IO Cards
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1.
PLC Input/Output Modules

2.
PLC Digital Input and Output Modules

3.
PLC Ladder Logic : Contacts and coils

4.
PLC Analog I/O and Network I/O

5.
PLC Analog Input Card Resolution Effects on Accuracy

6.
PLC Problems Troubleshooting

7.

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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
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PLC Analog Input Conversion Formula

8.
PLC Output Types

9.
PLC Analog I/O Potential Problems

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PLC Design Rules

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1.
Why Normally Closed Contact For Stop Buttons ?

2.
Failsafe Wiring Practices

3.
PLC Sinking & Sourcing Concept

4.
PLC Analog Signals Wiring Techniques

5.
PLC Digital Signals Wiring Techniques

6.
How to Reduce Relay Noise in PLC Systems

7.

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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
https://instrumentationtools.com
Basics of Permissive and Interlock Circuits

8.
Basics of Fail-safe Circuits

9.
What is Interposing Relay in a PLC System?

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Motor Control Circuits

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PLC Programming
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1.
Basics of Ladder Diagram in PLC Programming (VIDEO)

2.
PLC Programming languages

3.
Basics of PLC Programming

4.
Mis-conceptions of PLC Ladder Logic

5.
PLC Ladder Logic Example

6.

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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
https://instrumentationtools.com
Free SCADA Software Download

7.
What is Seal-in Circuit ?

8.
PLC Example with Switches

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Click Here to Read Article

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PLC Counter Instructions

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PLC Timer Instructions To
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PLC Math instructions

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PLC Data Comparison Instructions

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PLC Memory Mapping & I/O addressing

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PLC Industrial Automation

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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
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How a PLC Reads the Data from Field Transmitters

2.
How PLC Controls a ON/OFF Valve ?

3.
How PLC Controls a Motor ?

4.

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How to Troubleshoot a PLC System

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How a PLC do the Scaling for a Sensor ?

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PLC Analog Input Scaling To
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PLC Pneumatic Circuit Control

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PLC Interview Questions & Answers

1.
PLC Interview Questions and Answers

2.
Industrial Networking & Wireless Interview Questions

3.

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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
https://instrumentationtools.com
PLC/DCS Interview Questions & Answers

4.
Control Room and Field Instruments Questions & Answers

5.
Industrial Automation Engineers Interview Questions

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PLC/SCADA Engineers Interview Questions

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SCADA Interview Questions & Answers

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Siemens PLC Interview Questions & Answers
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Allen Bradley PLC Interview Questions & Answers

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Programmable Logic Controller Questions & Answers

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Industrial Instrumentation Questions & Answers

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Ethernet Communication Interview Questions & Answers

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Serial Communication Interview Questions & Answers

14.
Modbus Communication Interview Questions & Answers

15.
Fieldbus Communication Interview Questions

16.
OPC Communication Interview Questions & Answers

17.
Control Systems Interview Questions & Answers

18.
Interview Questions on PID Controllers

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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
https://instrumentationtools.com

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PLC Program Examples

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PLC Program for Mixing Tank

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PLC Program for Conveyor Motor

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PLC Program for Continuous Filling Operation

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PLC Program for Water Level Control

5.
PLC Program for Temperature Control using Thermostat

6.
PLC Program for Motor Starter

7.
PLC Program for Star Delta Motor Starter

8.
PLC Program using START & STOP Buttons

9.
PLC Program using Timers

10.
Allen Bradley PLC Subroutines

11.
PLC Program using Logic GATEs

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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
https://instrumentationtools.com
12.
PLC Program using Counters

13.
PLC Program to Energize & De-energize the Outputs based on Events

14.
PLC Program for Conveyor System

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PLC Program for Analog Input Sampling

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PLC Program for Conditional Control Logic

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PLC Ladder Logic for 3 Phase Asynchronous Motor Control
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PLC Program for Latching and unlatching Circuit

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PLC Program for Automatic Parameter Initialization when Power UP

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PLC Program for Automatic Lamp Control in Storage Facility

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PLC Program for Two Way Switch Logic

22.
PLC Program for Sequential Motor Control

23.
PLC Program for Automatic Liquid Mixing Application

24.
PLC Program for Water filling and Discharging Process

25.
PLC Program for Daily Production Record

26.
PLC Program for Automatic Bottle Rejection System

27.
PLC Program for Positive Edge Pulse Output for One Scan Cycle

28.
PLC Program for Alarm Indication in Process

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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
https://instrumentationtools.com
29.
PLC Program for Entry/Exit Control of Car Parking

30.
PLC Program for Alternate Output Circuit

31.
PLC Program for Blinking Lamp on 5 Seconds Interval

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PLC Program for IEC timers ( TON, TOF, TP &TONR ) used in S7-1200

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PLC Program for Flow Totalizer

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PLC Program for Artificial Fishpond Water Level Monitoring System
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PLC Program for Burglar Alarm Security System

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PLC Program for Automatic Heating and Mixing of Products

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PLC Program to Control Level of Parallel Tanks

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PLC Program to Control Level of Series Tanks

39.
PLC Program for Control Valve Scaling

40.
PLC Program to Read Temperature in PLC

41.
PLC Program for Counting Moving Objects on Conveyor

42.
Implement SR Flip Flop using PLC Ladder Logic

43.
PLC Program to Drain Same Products from Two Tanks

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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
https://instrumentationtools.com

PLC Programming Questions & Answers

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PLC Programming Questions & Answers – 1
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PLC Programming Questions & Answers – 2

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PLC Programming Questions & Answers – 3

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PLC Programming Questions & Answers – 4

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PLC Programming Questions & Answers – 5

PLC Programming Questions & Answers – 6
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PLC Programming Questions & Answers – 7

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PLC Ladder Logic Questions & Answers

Programmable Logic Controller (PLC) Questions and Answers – 1

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 Instrumentation Tools
Learn Instrumentation and Control Engineering. Inst Tools covers topics of Industrial Instrumentation,
PLC, DCS, SCADA, Field Instruments, Analyzers and so on.
https://instrumentationtools.com
Programmable Logic Controller (PLC) Questions and Answers – 2
Programmable Logic Controller (PLC) Questions and Answers – 3
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