BEST PLC TRAINING IN CHENNAI

Best plc training  provide  PLC (Programmable Logic Controllers)  is an industrial computer used to monitor inputs, and depending upon their state make decisions based on its program or logic, to control (turn on/off) its outputs to automate a machine or a process.

A digitally operating electronic apparatus which uses a programmable memory for the internal storage of instructions by implementing specific functions such as logic sequencing, timing, counting, and arithmetic to control, through digital or analog input/output modules, various types of machines or processes

BEST PLC TRAINING

·         Introduction to process control Automation

·         History of Automation

·         Concepts of Relay logic automation

·         Basic &Architectural Evolution of PLC

·         Role of PLC in automatio

·         Various ranges available in PLCs

·         Types of Inputs & outputs

·         Source Sink Concept in PLC

·         AI, AO, DI, DO Parameterization and configuration

·         Truth table implementation

·         Ladder builder Keyence PLC and Omron PLC Simulator

·         Timer Blocks programming

·         Counter Block programming

·         Concept of flags, Scan cycle

·         Live Interface Allen Bradley, Siemens S7-300 & GE-Fanuc, Mitsubishi, ABB, Delta PLCs

·         Upload, download, Monitoring of programs

·         Forcing I/P & O/P

·         Monitoring / Modifying data table values

·         Programming instructions Sets

·         Arithmetic and Logical

·         Load / Read / Write /Move /Leading edge / Trailing edge instructions

·         Compare / Add / Sub /Master control /set /reset function

·         Troubleshooting and fault in PLC

Programmable Logic Controller

•  Introduction to process control Automation •  Programmable Logic Controller •  Concepts of Relay logic automation •  Basic &Architectural Evolution of PLC •  Role of PLC in automation •  Various ranges available in PLCs •  Types of Inputs & outputs •  Source Sink Concept in PLC •  AI, AO, DI, DO Parameterization and configuration •  Truth table implementation •  Ladder builder Keyence PLC and Omron PLC Simulator •  Timer Blocks programming •  Counter Block programming •  Concept of flags, Scan cycle •  Live Interface Allen Bradley, Siemens S7-300 & GE-Fanuc, Mitsubishi, ABB, Delta PLCs •  Upload, download, Monitoring of programs •  Forcing I/P & O/P •  Monitoring / Modifying data table values •  Programming instructions Sets •  Arithmetic and Logical •  Load / Read / Write /Move /Leading edge / Trailing edge instructions •  Compare / Add / Sub /Master control /set /reset function •  Troubleshooting and fault in PLC

Programmable Logic Controller

A PLC works by continually scanning a program. We can think of this scan cycle

as consisting of 3 important steps. There are typically more than 3 but we can focus on

the important parts and not worry about the others. Typically the others are checking the

system and updating the current internal counter and timer values. The first type of

scanning, as shown in the diagram below, is not as common as the type that will be

discussed second.

The first step is to check the input status. This step is therefore generally referred

to as the “Check Input Status” stage. First the PLC takes a look at each input to determine

if it is on or off. In other words, is the sensor connected to the first input on? How about

the second input? How about the third? This goes on and on through the entire program.

It records this data into its memory to be used during the next step.

Next the Programmable logic controllers  executes your program one instruction at a time, called the

Execute Program  stage. For example, if your program said that if the first input was on

then it should turn on the first output. Since it already knows which inputs are on/off

from the previous step it will be able to decide whether the first output should be turned

on based on the state of the first input. It will store the execution results for use later

during the next step

.

Finally the PLC updates the status of the outputs. It updates the outputs based on

which inputs were on during the first step and the results of executing your program

during the second step. Based on the example in step 2 it would now turn on the first

output because the first input was on and your program said to turn on the first output

www.pacontrol.comwhen this condition is true.

  A new style of scanning has been implemented in the more recent years, called

“rung scanning”. This type basically scans each ladder rung individually in the entire

ladder logic program, updating the outputs on that rung after scanning through the inputs.

This changes the type of programming that will be used as well. If an output is in a rung

above the inputs it depends on, you will not get the output updated until the next scan, as

the program will keep scanning down until the last rung, then start over. This style is very

advantageous in certain situations. If you want your outputs updated at the soonest

possible moment, this is the style of scanning that you want to use