how to write program by ladder logic in case of PLC operation
Answer Posted / muhammad uzair
Ladder Logic is simply an interpretation of OR, AND, NOR,
XOR, XNOR, NAND functions. First you solve the problem
using the above functions & then transform the symbols into
those of ladder logic.
Each rung of ladder language typically has one coil at the
far right. Some manufacturers may allow more than one
output coil on a rung.
--( )-- a regular coil, true when its rung is true
--(\)-- a "not" coil, false when its rung is true
--[ ]-- A regular contact, true when its coil is true
(normally false)
--[\]-- A "not" contact, false when its coil is true
(normally true)
The "coil" (output of a rung) may represent a physical
output which operates some device connected to the
programmable controller, or may represent an internal
storage bit for use elsewhere in the program.
Example:
S = X AND ( Y OR Z )
----[ ]---------|--[ ]--|------( )--
X | Y | S
| |
|--[ ]--|
Z
Is This Answer Correct ? | 72 Yes | 14 No |
Post New Answer View All Answers
what are the ''pitting rings''and how cn they be controlled in a series generator
please tell me how a surge protector work on a DC 48Volt.? please describe briefly.
Match the following a)(X'+Y') b)X'Y' C)XY 1)NAND 2)NOR 3)Carry
Load break swicth maintenance procedure.
A motor running with lenze frequiency inverter stops if I REDUCE SPEED with 25% load.If I run it in High speed and medium speed running smoothly with full load.please help me to solve it.
What type of a DC motor would you use for a lift?
how will we calculate the copper wire load..
The specific heats of the gas at constant pressure and constant volume are respectively 1.0 kJ/kg K and 0.72 kJ/kg K; the value of R for the gas is
in our all power plant have connected in grid and grid voltage and plant voltage is same, but as per as electrical concept the power will transmit from high potential to low potential but here altough same,then how power transmit from power plant to grid.
If a air condition consume 2.50 to 3.00 amp then how much it will consume in watts if it is running 10 hours out of 24 hours????
what is booster? and how it is connected in a circuit?
How to Calculate the Fault Level of Electrical Installation
working principle of AC Servo Motor with its construction
Is it possible to implement Restricted Earth Fault protection for a transformer without neutral CT?
PLEASE ANYBODY HAVE ELECTRICAL CIRCUIT DIAGRAM FOR CHMER PULSE CD 60M SPARKING MACHINE.PLEASE MAIL ME SUPRIYAAYYAPPAN@YAHOO.CO.IN.