Explain No & Nc concept used in allen bradley plc?
What is sink and sourse module?How you will use No,Nc
concept in sink and sourse module?
Answers were Sorted based on User's Feedback
Answer / abhaynath
NO=XIC(EXAMINE IF CLOSED)
NC=XIO(EXAMINE IF OPEN)
NO IS DIRECTLY PROPORTIONAL TO INPUT LOGIC.
NC IS COMPLIMENT OF INPUT LOGIC.
i.e.
IF I/P=0 THEN LOGIC OF NO IS ALSO LOW(0).
IF I/P=1 THEN LOGIC OF NO IS ALSO HIGH(1).
ON THE OTHER HAND
IF I/P=0 THEN LOGIC OF NC IS HIGH(1).
IF I/P=1 THEN LOGIC OF NC IS LOW(0).
SINK MODULE ACCEPTS THE SIGNAL COMMING FROM THE SENSORS.
i.e.SIGNAL FLOWS FROM SENSOR TO MODULE.
SOURCE MODULE SENDS THE SIGNAL TO THE SENSORS.
i.e.SIGNAL FLOWS FROM MODULE TO SENSOR.
Is This Answer Correct ? | 31 Yes | 5 No |
Answer / shalini
If the module is source +ve signal is shared, it gets -ve
from outside.
If its sink type then -ve signal is shared, it gets +ve
from the external source
If senor is source type then card shud be of sink type.
If sensor is sink then I/O card shud be source type.
Is This Answer Correct ? | 21 Yes | 3 No |
Answer / mahip kaushal
this ia a basic and the most imp one too
NO MEANS NORMAL OPEN
NC MEANS NORMAL CLOSED
AS THE NAME SUGGEST NO IS A STATE 0 OR OFF IT IS BASICALLY
USED AS SWICH FOR EXAMPLE WHEN WE PUT ONN ANY ELECTRICAL
EUIPMENT LIKE BULB WE FOR THE SWITCH TO ONN POSTION I.E WE
TAKE THE SWITCH FROM 0 TO POSTION 1, FALSE TO TRUE.LIKE WISE
NC OPPOSITE TO NC INTIALLY IT IS IN HIGH STATE ,WE BASICALLY
USE NC IN PROGRAMING TO CUT SUPPLY AS WE FORCE IT FROM 1 TO
0 STATE
Is This Answer Correct ? | 17 Yes | 4 No |
Answer / atul
sink means sensor to module and source means o/p module to o/p devices(like as motor,...etc)
Is This Answer Correct ? | 2 Yes | 2 No |
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