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[ pdf ] A Micro PLC for Process Control

A Micro PLC for Process Control Download
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Topic under  PLC (Programmable Logic Controller)
Source: www.khalus.com.ua 
File size: 309.81 KB
File type: pdf
Last download on: Tue May 15, 2018 02:47:53 AM
Short Desciption:
A PLC or a Programmable Logic Controller in any process control.

Summary:
A PLC or a Programmable Logic Controller in any process control, e.g. a petroleum refinery, an automobile manufacturing unit or a building complex is designed to carry out operations and annunciations in the working of the plant that could be the monitoring of pressure, temperature, Motor and Valve status, etc., and controlling of electrical and mechanical machines within a sequence of values of time, pressure, temperature, level etc. In reality PLC's could be quite complex and is usually built around 486 and Pentium based processors with plenty of Analog and Digital I/O's to control an entire series of operations. However, at times an application may desire the use of a PLC with very limited functions but the costing doesn't suit the budget. Thus arises the need of having a flexible and programmable MicroPLC within a very restricted budget.
The PSoC based controller is used to control/operate a remote butterfly valve pack in a pipeline installation and working as a slave controller in connectivity with a MASTER PLC LAN . The Micro PLC uses the RS232 to receive control and status interrogation commands over the RS232 and also updates a remotely placed MASTER PLC of the valve status. The system is based on the PSoC CY8C26443 with logic/communication control to avoid or disallow illegal function call/operation. A MAX232A serves as the RS232 Line Driver and Receiver.
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    Posted by tfali
    Sun May 15, 2011 10:39:17 AM

    very good and thank you

    Posted by tfali
    Sun May 15, 2011 10:02:20 AM

    thank you for help

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