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Question
what is difference between modbus & fieldbus
 Question Submitted By :: Instrumentation
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Modbus is a Modicon bus it doesnt require dedicated
interface card as it required for fieldbus(Profibus) Modbus
can communicate from serial printer port via RS-485 n RS-
232 while Fieldbus can communicate from RS-485 ONLY.
 
Is This Answer Correct ?    44 Yes 14 No
Hemant Bhati
 

 
 
 
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how to know the URL and LRL for steam drum level and why the calibration range is in negative ? jsw 1
Basics Instrumentation Question   1
what is datum line?   4
WHAT DO YOU MEAN BY LOOP IN C. Wipro 2
why can't we use 5-20mA standard or some other instead of 4- 20mA? Emerson 6
what is plc? Basic function of plc? application of plc in industry? What is lader diagram ? What is the main advantage to use plc in industry? Schlumberger 9
what is the meaning of HART ?   1
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why temperature transmitter is showing ambienttemp.but 21.5ma. alarm AO showing at the display &how to sloves this problem.   2
HOW DPT WORKS? Essar 6
How to calculate 47Liter H2 Gas cyilnder consumtion? Cylinder inlet Pressure is 200bar and Discharge pressure is 6.0bar. Flow is 100ml/min.For the above condition how many days one cylinder can be used?   1
 
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