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Five Popular PLC Programming Languages You Need to Know

Posted by Harvie Hill on

PLC programming languages are used to program the automation devices in the industrial field. The device connect through PLCs can perform certain tasks like moving products or sorting them. The 5 most popular PLC Programing languages nowadays are all part of International Electrotechnical Commission Section 61131-3 Standard. IEC Standard is a set of rules that standardize PLC languages. The PLC programming language can be divided into two section: text-based and graphical. Text-based Languages: Instruction List (IL) Structured Text (ST) Graphical Languages: Ladder Logic Diagram (LLD) Sequential Function Charts (SFC) Function Block Diagram (FBD) The following are the introduction of the...

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Which is better PLC? Allen Bradely or Siemens

Posted by Harvie Hill on

In this article I want to share with you a comparison of these two product lines, including both the programmable controller hardware, as well as programming software. Controllers: Let’s start by looking at the Controllers or CPUs of each manufacturer. From an Allen-Bradley programmer's perspective, at first glance a Siemens S7-1200 might look like a MicroLogix, with its small form factor and on-board I/O. But the S7-1200 is actually more comparable to the CompactLogix in terms of processing power and memory. That said, the S7-1200 is more limited in add-on modules. It supports a max of 1 signal expansion board...

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All You Need to Know about PLC

Posted by Harvie Hill on

What is the PLC? PLC(Programmable logic controller): An industrial digital computer which has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, or robotic devices, or any activity that requires high reliability, ease of programming and process fault diagnosis. The above is the definition of PLC in Wikipedia. In short, PLC is simply a special computer which is programmed to control certain processes in industries like petroleum, Steel or Automobile, which can can range from small modular devices with tens of inputs and outputs (I/O), in a housing integral with the processor, to large rack-mounted modular devices with a...

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What is the difference between PLC and DCS?

Posted by Harvie Hill on

1.Definition of PLC and DSC on Wikipedia: PLC(Programmable logic controller): An industrial digital computer which has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, or robotic devices, or any activity that requires high reliability, ease of programming and process fault diagnosis. DCS(Distributed Control systems): A computerized control system for a process or plant usually with many control loops, in which autonomous controllers are distributed throughout the system, but there is no central operator supervisory control. This is in contrast to systems that use centralized controllers; either discrete controllers located at a central control room...

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Proper Ergonomic Design of Touch Screen

Posted by Harvie Hill on

1.INTRODUCTION The ability of employees to do their jobs is influenced by workspace attributes, equipment and job content. While deviation from optimal design of work equipment and environments is tolerable, there is a limit to the amount of adaptation to unsuitable conditions an employee can reasonably be asked to make. Beyond this point there is a cost, which can be defined in terms of efficiency, discomfort, frustration and dissatisfaction, work stress, attrition, and increased potential for accidents and personal injury. There are a number of upper body disorders that can be attributed to poor or constrained postures, repetitive movements or...

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