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Is PLC going to be "Dead"/ Obsolete ?

Industrial Digitization Era


There is buzz going on out there, PLC's or programmable logic controller will die soon….

its my view on what this article is all about, With advancement in industrial IOT (Internet Of Things) , Industry 4.0 and Industrial digitization , some people believe it will soon kill PLC's, as "Edge Server"( Computer PC with high specification RAM and redundancy features) implementations are on rise.

PLC's ARE, and WILL continue to be used heavily in industrial sectors, automation, manufacturing, and public infrastructure (like Wastewater Treatment, Electric Utilities, Gas Utilities, Traffic Control Systems, Bridge and Railroad Controls, Automated Storage and Retrieval Systems (ASRS), and etc).

PLC's are a popular option because of a few key points:

1: PLC's Technology is rapidly improving, latest PLC's from Siemens, Rockwell, GE are other brands like PLC's next made cloud connectivity so easy than ever.

2: PLC's are robust to withstand Harsh Environments commonly found in an industrial setting, such as widely varying temperatures, humidity, electromagnetic interference (EMI) noise, current flows, and shocks and vibration. Most PC based systems would not stand well in this kind of environment and probably BURN.

3: PLCs are dedicated controllers meant to run the specific application code for the machines task and in real time. In a PC based system, there may be a delay from when an input is given, until a desired output is achieved. A PLC is meant to process information in real-time and adjust or react to the process very quickly, usually within milliseconds (mS). In a motion controlled or process controlled environment, missing an input or not actuating an output in time could mean the end of a critical manufacturing process, loss of profits, life, or a major event like a fire, overflow of a tank, or an explosion.

4: PLC's do not freeze up like PCs do. The PLC's is meant to just loop through all of the code endlessly and is dedicated to that specific task. PLC's may halt due to a major or minor error, that may stop the processor from executing code (this is usually due to poor programming, such as a math overflow, infinite loop, watchdog scantime error, or buffer overflow). When this halt happens, there is other code that can be programmed to help properly shut down the process in a safe manner.

5: The PLC's does the dirty work on the manufacturing floor or an industrial environment, the SCADA server or PC sits in a nice clean Server room.

6: PLC's will continue to remain popular because a large sum on the code is written in ladder logic and is very familiar with most of the technicians and electricians that can read ladder logic and electrical blueprints. It gives them enough of a tool to go online with a processor with at least read access and troubleshoot why a process is not working, such as seeing a sensor is not on or a Motor Contactor is not starting. It is more cost effective to have a team of technicians rather than full time engineers to open the program every time there is a problem. PLC's support is also heavily invested in by various manufacturers of industrial hardware, such as supporting add on code and instructions and drivers to specific PLC's. Finally, depending on the model you chose, some PLC's may be very economical and cost effective for controlling a small machine rather than the cost of paying 5–10 times more for a PC based system, that would also require additional hardware to interface with hardwired IO systems.

Source shared info and credit goes to : https://www.youtube.com/watch?v=jgPd2MqZ-EU ( IT and Automation Academy )
​NO 9-01, JALAN PERTAMA 5, PUSAT PERDAGANGAN DANGA UTAMA, 81300, JOHOR BAHRU, JOHOR, MALAYSIA. 
TEL : 607-5596470

email: sthangar@asasmy.com

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  • Home
  • Training
    • Registration
    • Online Training
    • InHouse Training >
      • Siemens >
        • Siemens SM5.6 Inter
        • Siemens SM5.6 Advance
        • Siemens TIA Portal Inter
        • Siemens TIA Portal Advance
        • Siemens TIA Portal IIOT
      • Mitsubishi >
        • Mitsubishi FX Series Inter
        • Mitsubishi FX Series Advance
        • Mitsubishi FX Series Servo
      • Omron >
        • Omron C Series Inter
        • Omron C Series Advance
        • Omron NX Series Inter
        • Omron NX Series Advance
      • Allen Bradley >
        • Allen Bradley RSLogix5000 Inter
        • Allen Bradley RSLogix5000 Advance
        • Allen Bradley MicroLogix CCW 2 Days
      • Keyence >
        • Keyence PLC Basic
      • Schneider >
        • Schneider Machine EXpert Inter
      • GE Fanuc >
        • GE Fanuc Series 90-30 Inter
        • GE Fanuc Series 90-30 Advance
    • Contract Base Training
  • Product & Services
    • PLC & HMI Training Kits
    • Industrial Automation Repair & Services
    • Automation & Control Panels
    • Software Support
    • PLC, HMI & Industrial Products
  • PLC Info
    • Confident PLC Programmer
    • PLC Is Dead ?
    • Know PLC >
      • What is PLC
      • Difference Between PLC & DCS
      • Difference Between SCADA and HMI
      • Top 15 PLC brands
      • Popular PLC Language
      • Modular PLC vs Compact PLC
      • PLC Power Supply Safety
      • PLC Projects
      • IIoT and PLC
      • Top 11 reasons why you still need a PLC
      • Siemens PLC Com Port Types
    • Automation Info >
      • The Solution for Malaysian in Automation Fear
      • PLC Job Scopes Demand in Malaysia
      • PLC Online vs Onsite Training
    • Industrial Info >
      • Industrial Applications with PLC
      • Project Plan for Panel
      • FLUKE Processmeter for PLC
    • Safety First >
      • Safety Relays PNOZ(PILZ)
      • Working Principle of PLC
      • Wiring Practices
      • PLC Control System Failures Top Reasons
      • Do’s and Don’ts in PLC
      • Static Survey of PLC Programming
    • SKIM BANTUAN LATIHAN / SBL (HRDC)
    • SKIM BANTUAN LATIHAN KHAS / SBL-KHAS (HRDC)
  • Blog
  • Contact
  • Legal Terms
    • Terms and Condition
    • Training Apply Terms
    • Privacy Policy
    • Copyright Notice
    • Calender (Locked)
  • About Us
  • asasmy Review