INTRODUCTION TO OMRON PROGRAMMABLE LOGIC CONTROLLER

(CQ1MH)

by: crystal sofiana

INTRODUCTION TO OMRON PLC (CQM1H )

• Training kit which will be studied is from OMRON brand, model CQM1H of module types.

• A type of PLC control system and is able to control 16 input signals and 16 output signals.

• The control consists of three modules:• Power supply modules• Control modules• Output modules

FEATURES ~

• The CPU Unit provides 16 built-in input terminals.• I/O Units can be added to increase I/O capacity.• The CQM1 is much faster: about 20 times faster

than P-type PCs.• High-speed timers and counters are built in.• Outputs are processed when instructions are

executed (direct outputs).

MODULE IN PLCS

Power Supply Modules

Control Modules

Ouput Modules

PLC Training Kits

POWER SUPPLY MODULES

• Function

• 5VDC supply voltage to the unit and output control module.

• Model• Power supply model - PA203 CQM1

• Green indicator light will be lit when the power supplied was 240VAC

CONTROL MODULES

Processing the received signal from the input (input signal) and produces a signal that has been processed to the output.

• Modules & unit• Used from model CPU 21.• Have units such as:

• Built-in input terminal, • Built-in peripheral port, • Built-in RS-232 port, • Port batteries, • Port portable memory • memory device • microprocessor

• The CQM1 is a compact, high-speed PC composed of a Power Supply Unit, a CPU Unit, and I/O Units.

• All of these Units connect at the sides to form a single PC, which is normally mounted to a DIN track.

• All CQM1 CPU Units, except for the CQM1-CPU11-E, are equipped with an RS-232C port that can be connected directly to a host computer, another CQM1, or other serial devices.

CENTRAL PROCESSOR UNIT (CPU)

• Function• Regulate and supervise all operations and execute

commands stored in memory.

• A bus system is used as a medium of information between the CPU and other devices.

• Devices

• OMRON PLC CQM1H using microprocessor

integrated circuit as CPU

INTEGRATED CIRCUITS MICROPROCESSORS

AREAS OF APPLICATION

• Manufacturing / Machining• Food / Beverage• Textile Industry• Aerospace• Printing Industry

WHY PLC'S ARE PREFERRED?

Using PLC's to achieve automation has many advantages like:

1) Consistency in manufacturing can be easily achieved.

2) Complete control of the manufacturing process can be achieved.

3) Accuracy and quality can be improved.

4) Productivity can be improved.

5) Makes it easy to work in difficult or hazardous environment.

HOW IT WORK ?

CPU UNIT OVERVIEW

THE FOLLOWING DIAGRAM SHOWS THE SYSTEM CONFIGURATIONS POSSIBLE WITH THE

CQM1.

FLOWCHART FOR PLC

Design system

Create sequence diagram

Install and wire

Allocate I/O bits

Draw ladder diagram

Code Ladder Diagram

Turn on PC

Input Program

Debug Do test run

SAFETY PRECAUTION

• Do not attempt to take any unit apart while the power is being supplied.

• Do not touch any of the terminal while the power is being supplied.

• Do not attempt to disassemble, repair or modify any units.

• Tighten screws on the terminal block of the AC power supply unit to the torque specified in the manual.

• Double check the user program for proper execution before actually running it on the Unit.

ADVANTAGE AND DISADVANTAGES

ADVANTAGES DISADVANTAGES

Fast PLC Devices Are Proprietary

Easily programmed and have an easily understood programming

language.

Initial Costs Are High

Improves Productivity There's Too Much Work Required In Connecting Wires

Improves Quality Unemployment Rate Increases

CONCLUSION

• Programmable Logic Controllers, along with easy-to-use Support Software, are available to flexibly handle applications from small-scale equipment to entire production lines with Programmable Logic Controllers.

• It can be effectively used in applications ranging from simple control like replacing a small number of relays to complex automation problems.