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Understanding PLC HMI SCADA Programming
Source: plcer.com  Date: 2011-08-05

Programmable logic controllers (PLCs) are widely used today for industrial automation and control for the factory assembly lines. Unlike general-purpose computer, the PLC is designed for operation in harsh environments, and most manufacturers offer a wide range of I / O and communication options to choose from.
While the basic concepts of PLC programming are common to all manufacturers differences in the I / O addressing, memory organization and instruction sets that PLC programs are never perfectly interchangeable between different makers. Even within the same product of a manufacturer, different models are not directly compatible.
For real-time systems, our diverse experience in various manufacturing environments has enabled us to specialize in a variety of PLC brands and platforms. Some well known brands of PLC, we also know: Allen Bradley, Siemens, GE Fanuc, Omron, Modicon / Telemecanique, Toyopuc, Mitsubishi, Bristol Babcock, SCADAPack Series, Koyo, and Panasonic (Matsushita brand). Our team of experienced engineers and programmers, you need all your design and programming assistance.

Supervisory Control and Data Acquisition (SCADA) and Human Machine Interface (HMI) systems are implemented with greater regularity in today’s ultra competitive manufacturing environment.
SCADA systems are used to ensure data collection and management at the level of supervision, while the HMI is usually a local user interface allows operators to a machine or a process to manipulate perceived locally.
Data collection begins with the PLC and includes readings and equipment status is communicated to SCADA as required. The data can then be processed and formatted so that the operator can dispatch via a terminal (usually a desktop computer) the appropriate supervisory decisions that may be necessary to change or over-ride the normal PLC control.
Tags (data) is locally collected in the database software or SCADA historian (distributed database), which allows other analytical work and monitoring of trends. These distributed measurement and control systems provide manufacturers with a flexible software solution that can be adapted to the specific needs of the production. It also allows a common framework, enabling operators noticed the same look and feel in control of any part of the system.
In the past, the implementation of the distributed control system often requires a lot of end users to purchase the system from one source. Today, with OPC connectively, it often build to a system of SCADA hardware and software components from a variety of manufacturers. At RTS, our extensive knowledge and experience in implementing distributed control systems over the years in many industries, the technical expertise to solve your most demanding applications. We have a software solution from different vendors including: Allen Bradley (Panel Builder introduced RSView SE / ME, RSView 32), GE (Panelmate Power Pro FIX32, iFix & Cimplicity), Siemens (WinCC WinCC Flexible &), Wonderware, Iconics ( Genesis), Omron (CX-data), Mitsubishi (GT Works), Think Koyo (Direct Touch & Thu), Telemecanique (Magelis).

 


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