Answer / raj anu raj

Every manufacturer issues catalogs, O&M manuals with their
products or download them from their respective site. Just
go through them. They will clearly explain you the error
codes which are visible(flashing leds) in the PLC. From
them trouble shooting will be easy.
Regards

Answer / ponnuswamy balakrishnan

It doesn't matter which brand of PLC you are hanldling
with. You should know the basics of electrical circuits and
able to read circuit drawings perfectly. PLC perform the
programme what we write for a specific objective.If it
ackowledges the inputs signals ( Sensors,switches etc)it
will automatically give o.k for output( motors and
temp.controllers etc.).So first check the input & output
signals in the plc for the broke down circuit. If it is
o.k.then proble should be in the hard wire line. May be the
wire groundeded or the defective component.

Answer / rajesh kumar rajesh

The programmable logic controller (PLC) is changing to
reflect the demands of sequencing and continuous processing
applications. The PLC can be thought of as a hardened
computer with high speed I/O and communications ports with
bus interfacing for multiprocessor or coprocessor
enhancements, and a BIOS that supports those features. PLC
manufacturers now retain control over both aspects of the
PLC which interoperate in a proprietary manner. Via the
delineation of the two may come a standard real time
operating system or real time kernel which would give rise
to true applications portability.
IF ANYONE NEED ANY MORE DETAILS PLEASE CONTACT ME :
rajeshbole@gmail.com or call me @ 09980499000(RAJESH)

Whether the DP transmitter can be utilised in the medium of Vaccum for the measurement of Level?

10 Answers  

---

in valve is constructed as per SME B 16.34, then which standard is used for fire testing of valve?.

0 Answers  

---

can you suggest good traning institute in instrumentation ? (in automation, or designing)

5 Answers  

---

Tell me the field calibration procedure step by step with diagram of pressure gauge, pressure switch, pressure transmitter, temperature switch, level switch, flow switch, flow transmitter.

0 Answers  

---

What is derating factor in Motor?

1 Answers  

---

---

What are the most frequent problem faces with Vortex flow meter?

1 Answers  

---

deference between DCS and PLC including date processing and architacture.

11 Answers   Jindal, Shell,

---

what pressure transmitter?

8 Answers   Bhel,

---

what is the advantage by using PID controller than P& PID?

1 Answers  

---

Why boiler chimney area  oxyden sensor fixing? 

0 Answers   NTPC,

---

Why ac supply load cell is used? Can we use the dc supply load cell?

0 Answers  

---

what is difference between PLC and DCS?

10 Answers  

---