How does PLC work in elevators?

PLC receives input signal from operator or various sensors used at different floor for performing many functions. PLC controller produces control signals via output module which controls the motor operation and feedback is given to PLC controller.

How do you program a PLC ladder?

Basic Ladder Logic Rung Analysis Step 1 – The hypothetical current starts moving from left to right. Step 2 – When the hypothetical current encounters and XIC Instruction, it checks if the condition is TRUE or FALSE. If the XIC is False, the PLC aborts this rung.

What programming line is used in ladder logic for PLC?

In PLC ladder logic programming, the horizontal line is called Rung. Basically, the ladder logic is composed of a set of rungs. Each rung represents a single line with specific functions.

What controls an elevator?

An elevator controller is a system to control the elevators and the elevator control panel is a cabin that holds all of the components to control the elevator. The elevator control panel holds all the power supply units, orchestrates all the operations, and ensures safety.

What is a rung on a ladder logic diagram?

Horizontal lines in a ladder diagram are called “rungs,” each one representing a unique parallel circuit branch between the poles of the power supply.

What are the logic functions used in ladder programming?

Now let’s talk about the six most used logic functions in PLC ladder programming //

  • AND function.
  • OR function.
  • NOT function.
  • NAND function.
  • NOR function.
  • Exclusive OR (XOR) function.

What does C mean in elevator?

Concourse
C: With three different meanings: Concourse, used in some train stations and double deck (lower deck) elevator. Casino, used as the building with the specific floor used only for Casinos. Cockloft, similar as “Mezzanine Floor” (M).