Answer / murali iroyal

A programmable logic controller(PLC)is a electronic device
or i can say it as a controller to make program for machine
to operate in lay-man language,

Using PLC you can make machine automatic and run the machine
asper your requirement

Answer / m.umer irshad

a PLC is a Controller and a electronic device thats perform
according to instrunctions saved in their memory to perform
the specific tasks.

Answer / khomotso

It Operates, more like microcontrollers but the configuration are way too different. It make use of logic zero and logic one for automatic control and for complex operation, some sensors, relays, timers, counters... etc are installed as part of the process control to obtain desired outputs

Examples. Boom gate, traffic lights,

what is commissioning & pre commissioning , explain with difination

2 Answers   Bapco Bahrain Petroleum Company, Shell,

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I work on a electronic positioner transmitter 4211 at the field.I connect my multimeter in series to get the current output then I calibrate it to 4ma in 0% of position of the valve and 20ma in 100% position of the valve.My problem is in the field I get the correct output current based on my multimeter but in the dcs they only receive 40% in a output 20ma of this positioner.Then I try to simulate in this analog card and they receive the equivalent percent on the value that I simulated.Is ther any possibility to reset the zero and span of this positioner 4211 fisher.And what other possibility I can do to fixed this.This is my email add ( landicho_randy@yahoo.com )

4 Answers  

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what is cascade system ?

1 Answers   RSP, Thermax,

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what is the formula for calculating milliampere at different pressure points for eg 4-20 ma = 3-15 psi but if i have to check the ma at 4.6 ma?

4 Answers  

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what is the difference between Ethernet unmanaged and managed Switch?

2 Answers  

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Explain about signal isolator

1 Answers   TCS,

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what is field bus system. need defination

3 Answers   Takreer,

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How to calibrate radar type level transmitter for interface level? Total liquid(liq.1 and liq.2), level both the liq individually? For. Both the liquid levels how the signal will go from transmitter to dcs? How to calibrate. Single radar 9:26:55 AM for 2 different liquids in a tank?

0 Answers   Almeer Technical Services,

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Explain about relays.. Can we give both AC and DC to the same relay... How it is energising.. Explain its working..

7 Answers   IOCL,

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key phaser where is use and work

0 Answers   BAP,

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what's meanning of 1250KVA and how to calculate with Volttage and Current. answer give with example.

3 Answers  

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what is the well head protection system?

1 Answers  

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