PLC Hardware


Curated information from PLC Manual

PLC Hardware
Hardware Components of a PLC System
Processor unit (CPU), Memory, Input/Output, Power supply unit, Programming device, and other devices.

Central Processing Unit (CPU)
CPU – Microprocessor based, may allow arithmetic operations, logic operators, block memory moves, computer interface, local area network, functions, etc.
CPU makes a great number of check-ups of the PLC controller itself so eventual errors would be discovered early.

System Busses
The internal paths along which the digital signals flow within the PLC are called busses.

The system has four busses:
– The CPU uses the data bus for sending data between the different elements,
– The address bus to send the addresses of locations for accessing stored data,
– The control bus for signals relating to internal control actions,
– The system bus is used for communications between the I/O ports and the I/O unit.

Memory
System (ROM) to give permanent storage for the operating system and the fixed data used by the CPU.
RAM for data. This is where information is stored on the status of input and output devices and the values of timers and counters and other internal devices. EPROM for ROM’s that can be programmed and then the program made permanent.

I/O Sections
Inputs monitor field devices, such as switches and sensors.
Outputs control other devices, such as motors, pumps, solenoid valves, and lights.

Power Supply
Most PLC controllers work either at 24 VDC or 220 VAC. Some PLC controllers have electrical supply as a separate module, while small and medium series already contain the supply module.

Programming Device
The programming device is used to enter the required program into the memory of the processor.
The program is developed in the programming device and then transferred to the memory unit of the PLC.

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SCADA. FDAS. HMI. FMS. PLC. PAC. DCS. RTU. SMS.

https://jcgregsolutions.wordpress.com/2016/06/30/working-on-the-scada-system-of-a-50mw-solar-power-plant-in-tarlac/

We do design, programming, and system integration of local-to-remote-real-time data monitoring and control. Create the leverage to catch up with change brought about by the 4th Industrial Revolution and the entry of IoT (Internet of Things). Would like to assist you eliminate constraints of time and distance on the plant floor.
We have done high rise and commercial building BMS and FDAS. Commissioned industrial plant floor HMI and Automation systems. Serviced marine vessel instrumentation. Customized and programmed wind, solar, and biomass power plant SCADA- 12KW up to 50MW.
Looking forward to serve you. 

Best Regards,
Jess C.Gregorio

InSpecIT Inc.

Unit 719/722 City & Land Mega Plaza Bldg.

ADB Ave. cor. Garnet Road, Ortigas Center

San Antonio, Pasig City, Philippines 1605

gregoriojess@yahoo.com

We do SCADA, BMS, FDAS, FMS, HMI, and Control System Integration.

https://jcgregsolutions.wordpress.com/2016/07/31/over-and-above-scada-bms-fdas-hmi/
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PLC History


Curated Information from PLC Manual

PLC development began in 1968 in response to a request from an US car manufacturer (GE). The first PLCs were installed in industry in 1969.
Communications abilities began to appear in approximately 1973. They could also be used in the 70’s to send and receive varying voltages to allow them to enter the analog world.
The 80’s saw an attempt to:

standardize communications with manufacturing automation protocol (MAP), reduce the size of the PLC, and making them software programmable through symbolic programming on personal computers instead of dedicated programming terminals or handheld programmers.
The 90’s have seen a gradual reduction in the introduction of new protocols, and the modernization of the physical layers of some of the more popular protocols that survived the 1980’s.
The latest standard “IEC 1131-3” has tried to merge plc programming languages under one international standard. We now have PLCs that are programmable in function block diagrams, instruction lists, C and structured text all at the same time.

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SCADA. FDAS. HMI. FMS. PLC. PAC. DCS. RTU. SMS.

https://jcgregsolutions.wordpress.com/2016/06/30/working-on-the-scada-system-of-a-50mw-solar-power-plant-in-tarlac/

We do design, programming, and system integration of local-to-remote-real-time data monitoring and control. Create the leverage to catch up with change brought about by the 4th Industrial Revolution and the entry of IoT (Internet of Things). Would like to assist you eliminate constraints of time and distance on the plant floor.
We have done high rise and commercial building BMS and FDAS. Commissioned industrial plant floor HMI and Automation systems. Serviced marine vessel instrumentation. Customized and programmed wind, solar, and biomass power plant SCADA- 12KW up to 50MW.
Looking forward to serve you. 

Best Regards,
Jess C.Gregorio

InSpecIT Inc.

Unit 719/722 City & Land Mega Plaza Bldg.

ADB Ave. cor. Garnet Road, Ortigas Center

San Antonio, Pasig City, Philippines 1605

gregoriojess@yahoo.com

We do SCADA, BMS, FDAS, FMS, HMI, and Control System Integration.

https://jcgregsolutions.wordpress.com/2016/07/31/over-and-above-scada-bms-fdas-hmi/
Browse JcGreg Flipboard Magazine

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What can the blockchain be useful for, in real life ?


*curated information—-

The “blockchain” of rice growing communities

In Asia, people grow rice. Growing rice requires rice paddies, flat fields that can be flooded with water. This means that the vast majority of rice fields are located in river deltas. Growing rice is labour-intensive, therefore rice-growing civilisations value enormously mutual cooperation and help. As a result, the population lives in small villages where everybody knows everybody, a typical peer-to-peer organisation where there is no need of a strong central authority. There is a Vietnamese proverb that says “the authority of the emperor stops at the gate of the village”.

In such communities, when you promise to help someone for the harvest at a given day, the whole neighbourhood knows and records your promise, and you cannot deny it anymore. And if a boy dates a girl, the whole village knows it also. Clearly, gossiping is the way of life in such communities, be it good or bad.

Read more.

https://www.linkedin.com/pulse/what-can-blockchain-useful-real-life-khang-vu-tien

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SCADA. FDAS. HMI. FMS. PLC. PAC. DCS. RTU. SMS.

https://jcgregsolutions.wordpress.com/2016/06/30/working-on-the-scada-system-of-a-50mw-solar-power-plant-in-tarlac/

We do design, programming, and system integration of local-to-remote-real-time data monitoring and control. Create the leverage to catch up with change brought about by the 4th Industrial Revolution and the entry of IoT (Internet of Things). Would like to assist you eliminate constraints of time and distance on the plant floor.

We have done high rise and commercial building BMS and FDAS. Commissioned industrial plant floor HMI and Automation systems. Serviced marine vessel instrumentation. Customized and programmed wind, solar, and biomass power plant SCADA- 12KW up to 50MW.

Looking forward to serve you. 

Best Regards,

Jess C.Gregorio

InSpecIT Inc.

Unit 719/722 City & Land Mega Plaza Bldg.

ADB Ave. cor. Garnet Road, Ortigas Center

San Antonio, Pasig City, Philippines 1605

gregoriojess@yahoo.com

We do SCADA, BMS, FDAS, FMS, HMI, and Control System Integration.

https://jcgregsolutions.wordpress.com/2016/07/31/over-and-above-scada-bms-fdas-hmi/

Browse JcGreg Flipboard Magazine

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Introduction to PLCs


*curated information…

By PLC Manual

What does ‘PLC’ mean?

A 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.

NEMA defines a PROGRAMMABLE LOGIC CONTROLLER as:

“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”.

Traditional PLC Applications
*In automated system, PLC controller is usually the central part of a process control system.
*To run more complex processes it is possible to connect more PLC controllers to a central computer.

Disadvantages of PLC control
– Too much work required in connecting wires.

– Difficulty with changes or replacements.
– Difficulty in finding errors; requiring skillful work force.

– When a problem occurs, hold-up time is indefinite, usually long.

Advantages of PLC control
* Rugged and designed to withstand vibrations, temperature, humidity, and noise.

* Have interfacing for inputs and outputs already inside the controller.

* Easily programmed and have an easily understood programming language.

Major Types of Industrial Control Systems

Industrial control system or ICS comprise of different types of control systems that are currently in operation in various industries. These control systems include PLC, SCADA and DCS and various others:

PLC

They are based on the Boolean logic operations whereas some models use timers and some have continuous control. These devices are computer based and are used to control various process and equipments within a facility. PLCs control the components in the DCS and SCADA systems but they are primary components in smaller control configurations.

DCS

Distributed Control Systems consists of decentralized elements and all the processes are controlled by these elements. Human interaction is minimized so the labor costs and injuries can be reduced.

Embedded Control

In this control system, small components are attached to the industrial computer system with the help of a network and control is exercised.

SCADA

Supervisory Control And Data Acquisition refers to a centralized system and this system is composed of various subsystems like Remote Telemetry Units, Human Machine Interface, Programmable Logic Controller or PLC and Communications.

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SCADA. FDAS. HMI. FMS. PLC. PAC. DCS. RTU. SMS.

https://jcgregsolutions.wordpress.com/2016/06/30/working-on-the-scada-system-of-a-50mw-solar-power-plant-in-tarlac/

We can build you a local or remote real-time data monitoring system to jumpstart you to the 4th industrial revolution and IoT (Internet of Things).

We have done above subject for high rise/commercial building BMS and FDAS. Industrial HMI and Automation. Marine vessel instrumentation. Wind, Solar, and Biomass Power Plant SCADA in the range of 12KW up to 50MW. 

Jess C.Gregorio

InSpecIT Inc.

Unit 719/722 City & Land Mega Plaza Bldg.

ADB Ave. cor. Garnet Road, Ortigas Center

San Antonio, Pasig City, Philippines 1605

gregoriojess@yahoo.com

We do SCADA, BMS, FDAS, FMS, HMI, and Control System Integration.

https://jcgregsolutions.wordpress.com/2016/07/31/over-and-above-scada-bms-fdas-hmi/

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An Invention and Tips from the Inventor on Inventing


*curated information…

One does wonder how many millions of ideas and indeed inventions fail to see the light of day.
The topic raises some interesting questions. Are there traits typical to inventors, for example and does the commercial successes of an invention (and its protection) always rely on a great deal of money? Or is marketing expertise the key?

Read and find out what.

http://www.idc-online.com/content/invention-and-tips-inventor-inventing

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SCADA. FDAS. HMI. FMS. PLC. PAC. DCS. RTU. SMS.

https://jcgregsolutions.wordpress.com/2016/06/30/working-on-the-scada-system-of-a-50mw-solar-power-plant-in-tarlac/

We can build you a local or remote real-time data monitoring system to jumpstart you to the 4th industrial revolution and IoT (Internet of Things).

We have done above subject for high rise/commercial building BMS and FDAS. Industrial HMI and Automation. Marine vessel instrumentation. Wind, Solar, and Biomass Power Plant SCADA in the range of 12KW up to 50MW. 

Jess C.Gregorio

InSpecIT Inc.

Unit 719/722 City & Land Mega Plaza Bldg.

ADB Ave. cor. Garnet Road, Ortigas Center

San Antonio, Pasig City, Philippines 1605

gregoriojess@yahoo.com

We do SCADA, BMS, FDAS, FMS, HMI, and Control System Integration.

https://jcgregsolutions.wordpress.com/2016/07/31/over-and-above-scada-bms-fdas-hmi/

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Understanding the need for protection from lightning induced surges


*curated information…

The last thing you want mission control to worry about is if your design engineers used the right circuit protection technology. And you shouldn’t be worried if your engineering team took the right precautions during the design phase.

Why is circuit protection so important when designing circuits for space applications?

http://www.idc-online.com/content/understanding-need-protection-lightning-induced-surges

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SCADA. FDAS. HMI. FMS. PLC. PAC. DCS. RTU. SMS.

https://jcgregsolutions.wordpress.com/2016/06/30/working-on-the-scada-system-of-a-50mw-solar-power-plant-in-tarlac/

We can build you a local or remote real-time data monitoring system to jumpstart you to the 4th industrial revolution and IoT (Internet of Things).

We have done above subject for high rise/commercial building BMS and FDAS. Industrial HMI and Automation. Marine vessel instrumentation. Wind, Solar, and Biomass Power Plant SCADA in the range of 12KW up to 50MW. 

Jess C.Gregorio

InSpecIT Inc.

Unit 719/722 City & Land Mega Plaza Bldg.

ADB Ave. cor. Garnet Road, Ortigas Center

San Antonio, Pasig City, Philippines 1605

gregoriojess@yahoo.com

We do SCADA, BMS, FDAS, FMS, HMI, and Control System Integration.

https://jcgregsolutions.wordpress.com/2016/07/31/over-and-above-scada-bms-fdas-hmi/

Browse JcGreg Flipboard Magazine

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Linking Networks, Middleware and SCADA for IoT


*curated information…

As interest in the Internet of Things increases among industrial end users of all sizes, manufacturers looking to take the plunge are learning that they need to construct their IoT initiative by cobbling together many disparate technologies. 

“Collectively, we can offer a unique technology combination that opens up advanced monitoring, analysis, management and maintenance benefits,” says Phil Marshall, CEO of Hilscher North America. “Our combined resources put the big operational gains promised by IIoT within easy reach of any enterprise.”

Read more.

https://www.automationworld.com/all/linking-networks-middleware-and-scada-iot

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SCADA. FDAS. HMI. FMS. PLC. PAC. DCS. RTU. SMS.

https://jcgregsolutions.wordpress.com/2016/06/30/working-on-the-scada-system-of-a-50mw-solar-power-plant-in-tarlac/

We can build you a local or remote real-time data monitoring system to jumpstart you to the 4th industrial revolution and IoT (Internet of Things).

We have done above subject for high rise/commercial building BMS and FDAS. Industrial HMI and Automation. Marine vessel instrumentation. Wind, Solar, and Biomass Power Plant SCADA in the range of 12KW up to 50MW. 

Jess C.Gregorio

InSpecIT Inc.

Unit 719/722 City & Land Mega Plaza Bldg.

ADB Ave. cor. Garnet Road, Ortigas Center

San Antonio, Pasig City, Philippines 1605

gregoriojess@yahoo.com

We do SCADA, BMS, FDAS, FMS, HMI, and Control System Integration.

https://jcgregsolutions.wordpress.com/2016/07/31/over-and-above-scada-bms-fdas-hmi/

Browse JcGreg Flipboard Magazine

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LEADING THE DIGITAL GOVERNMENT TRANSFORMATION


//curated information.

Data and IoT are among the emerging technologies driving the fourth industrial revolution. One key role GovTech plays is in building the infrastructure and backend data and video analytics platforms to help public sector agencies better optimise data and analytics for planning and operations.

In Singapore, the Government Technology Agency of Singapore, or “GovTech”, launched in October 2016, underscores the government’s intent to transform the traditional delivery of digital government services. Driving the government’s digital transformation is the first of GovTech’s three key strategic thrusts.

Read more.
http://focus.fccsingapore.com/2017/02/09/leading-the-digital-government-transformation/

—————————————-

SCADA. FDAS. HMI. FMS. PLC. PAC. DCS. RTU. SMS.

We can build you a local or remote real-time data monitoring system to jumpstart you to the 4th industrial revolution and IoT (Internet of Things).

We have done above subject for high rise/commercial building BMS and FDAS. Industrial HMI and Automation. Marine vessel instrumentation. Wind, Solar, and Biomass Power Plant SCADA in the range of 12KW up to 50MW. 

Jess C.Gregorio

InSpecIT Inc.

Unit 719/722 City & Land Mega Plaza Bldg.

ADB Ave. cor. Garnet Road, Ortigas Center

San Antonio, Pasig City, Philippines 1605

gregoriojess@yahoo.com

We do SCADA, BMS, FDAS, FMS, HMI, and Control System Integration.

https://jcgregsolutions.wordpress.com/2016/07/31/over-and-above-scada-bms-fdas-hmi/

Browse JcGreg Flipboard Magazine

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Microgrids Could Pave the Way for Future Energy Distribution


//curated information…

Microgrids are local energy grids the can disconnect from the traditional grid and operate autonomously. Microgrids have the ability to strengthen and reinforce the traditional grid because they can function even when the main grid is down and are optimal for integrating renewable sources of energy. However, energy storage technology accounts for the highest cost in developing a microgrid, yet is the least understood component and tends to be the most poorly integrated. If batteries and microgrids could interact at a higher efficiency, new possibilities could arise for the future of energy distribution.

Read more.

http://www.newswise.com/articles/view/670344/?sc=rssn&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+NewswiseScinews+%28Newswise%3A+SciNews%29

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SCADA. FDAS. HMI. FMS. PLC. PAC. DCS. RTU. SMS.

https://jcgregsolutions.wordpress.com/2016/06/30/working-on-the-scada-system-of-a-50mw-solar-power-plant-in-tarlac/

We can build you a local or remote real-time data monitoring system to jumpstart you to the 4th industrial revolution and IoT (Internet of Things).

We have done above subject for high rise/commercial building BMS and FDAS. Industrial HMI and Automation. Marine vessel instrumentation. Wind, Solar, and Biomass Power Plant SCADA in the range of 12KW up to 50MW. 

Jess C.Gregorio

InSpecIT Inc.

Unit 719/722 City & Land Mega Plaza Bldg.

ADB Ave. cor. Garnet Road, Ortigas Center

San Antonio, Pasig City, Philippines 1605

gregoriojess@yahoo.com

We do SCADA, BMS, FDAS, FMS, HMI, and Control System Integration.

https://jcgregsolutions.wordpress.com/2016/07/31/over-and-above-scada-bms-fdas-hmi/

Browse JcGreg Flipboard Magazine

https://flipboard.com/@JessGregorio?tab=magazines

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A Sharper Focus on the Edge


//curated information…

Not so long ago, when automation suppliers talked about the future of manufacturing, cloud computing was central to nearly every conversation. Though the cloud remains poised to play a significant role in manufacturing’s future, there is a great deal more attention being focused on edge computing today.

If you’re unsure about the difference between the two, here is a simplified explanation. Edge computing is the placement of servers or other computing devices—even a microcomputer—on or near a plant-floor device for data collection, analysis and storage. Cloud computing, on the other hand, involves sending plant-floor device data to an off-site server for storage and analysis. 

Read more. 

https://www.automationworld.com/all/sharper-focus-edge

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SCADA. FDAS. HMI. FMS. PLC. PAC. DCS. RTU. SMS.

https://jcgregsolutions.wordpress.com/2016/06/30/working-on-the-scada-system-of-a-50mw-solar-power-plant-in-tarlac/

We can build you a local or remote real-time data monitoring system to jumpstart you to the 4th industrial revolution and IoT (Internet of Things).

We have done above subject for high rise/commercial building BMS and FDAS. Industrial HMI and Automation. Marine vessel instrumentation. Wind, Solar, and Biomass Power Plant SCADA in the range of 12KW up to 50MW. 

Jess C.Gregorio

InSpecIT Inc.

Unit 719/722 City & Land Mega Plaza Bldg.

ADB Ave. cor. Garnet Road, Ortigas Center

San Antonio, Pasig City, Philippines 1605

gregoriojess@yahoo.com

We do SCADA, BMS, FDAS, FMS, HMI, and Control System Integration.

https://jcgregsolutions.wordpress.com/2016/07/31/over-and-above-scada-bms-fdas-hmi/

Browse JcGreg Flipboard Magazine

https://flipboard.com/@JessGregorio?tab=magazines

Follow JcGreg WordPress Blogs

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