Answer / d das

A programmable logic controller (PLC) or programmable
controller is a digital computer used for automation of
electromechanical processes, such as control of machinery
on factory assembly lines, amusement rides, or light
fixtures. PLCs are used in many industries and machines.
Unlike general-purpose computers, the PLC is designed for
multiple inputs and output arrangements, extended
temperature ranges, immunity to electrical noise, and
resistance to vibration and impact. Programs to control
machine operation are typically stored in battery-backed-up
or non-volatile memory. A PLC is an example of a hard real
time system since output results must be produced in
response to input conditions within a limited time,
otherwise unintended operation will result.

if i want buy a pressure gauge then witch parameter i look

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hi vishok this is noor plz tell me what type problems will occured i use T/C in the place of RTD in (FEED WATER TANK),plz send ur e-mail address to my ID (mail2noor.hyd@gmail.com)

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In RTU Panel we are having several Analogue & Digital Inputs /Outputs. We are recently facing some problems over Analog inputs , which are not updating properly (But Digital Input are updating normally) Can any one tell me from where the problem is creating , we have checked PLC CPU card, Analog Input card & we reconfigured ,But still the issue is there. Issue : 1. Sometimes Analog values are updating & sometimes not. 2. Analog values are not updating normally , showing some wrong Values 3. Total dead (0 value) Analog values are Level & flow measurement from the field instruments. (But in field the instruments are working normally & Displaying the values normally in local display unit) This problem we are facing in our Water Plant. If any one experienced this same problem or having any ideas related to our issue PLS send your valuable Answers/Replies...

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