Define the I/O section of the PLC

  • Define the I/O section of the PLC

     Padhu updated 1 year, 6 months ago 1 Member · 1 Post
  • Padhu

    July 19, 2020 at 10:07 am

    The I/O (Input/Output) section of the PLC is the part of the unit that all external devices are connected. The I/O section communicates between the I/O sections and the CPU to carry out programmed functions.

    A typical PLC has several I/O sections that allow for a variety of functions to be controlled. We will distinguish between the input and output sections later in this module.

    Most PLCs have room for multiple I/O modules on the controller. This allows the PLC to be customized to many different uses, depending on the needs of the user.

    Different I/O options can be strung together in order to accomplish a number of tasks.

    Several additional types of interfaces should be considered when working with Programmable Logic Controllers.

    The following devices may be configured as the interface with the PLC:

    – Simple lights

    – Pushbuttons

    – Proximity switches

    – Text messages

    Systems that are more complex may include internet-based interfaces that run on supervisory control computers or data acquisition systems.

    Human Machine Interfaces (HMI) can also communicate with PLCs as an interface.

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