Explain What Is Scan In Plc?

1.	Explain What Is Scan In Plc?
Answer» The sequential operation of the CONTROLLER that goes through the ladder diagram from top to bottom of the ladder. In this PROCESS it updates all the outputs corresponding to the INPUTS. SCAN takes place from left to right of each rung. Usually SCAN time is in MILLISECONDS and it is a continuous process. The sequential operation of the controller that goes through the ladder diagram from top to bottom of the ladder. In this process it updates all the outputs corresponding to the inputs. SCAN takes place from left to right of each rung. Usually SCAN time is in milliseconds and it is a continuous process.

Answer»

The sequential operation of the CONTROLLER that goes through the ladder diagram from top to bottom of the ladder. In this PROCESS it updates all the outputs corresponding to the INPUTS. SCAN takes place from left to right of each rung. Usually SCAN time is in MILLISECONDS and it is a continuous process.

The sequential operation of the controller that goes through the ladder diagram from top to bottom of the ladder. In this process it updates all the outputs corresponding to the inputs. SCAN takes place from left to right of each rung. Usually SCAN time is in milliseconds and it is a continuous process.

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