Concept of Latching in PLC
Explain the Concept of Latching in PLC using relevant example. Draw a Ladder Logic to control a bulb using push buttons in PLC with latching. I0.0 : START (ON) push...
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What is Seal-in Circuit ?
A Seal-in circuit is a method of maintaining current flow after a momentary switch has been pressed and released. What is Seal-in Circuit ? Fig 1 : Start button not...
PLC Program for Latching and unlatching Circuit
PLC Latching and unlatching Circuit This is PLC Program for Latching and unlatched circuit for output. Problem Description In some conveying system operator fills tank manually by operation water pump manually....
PLC Latching Function
There are often situations where it is necessary to hold an output energized, even when the input ceases. A simple example of such a situation is a motor, which is...