Modular programmable logic controller

Abstract

The invention belongs to the technical field of controllers, and particularly relates to a modular programmable logic controller, which comprises a base body, wherein a mounting cavity is formed in the side wall of the base body, a slot frame is fixedly inserted into the mounting cavity, a flowing cavity is formed in the slot frame, a plurality of conductive thimbles are arranged in the slot frame, a conductive plug is inserted into the slot frame in a matched mode, a sealing sliding plate is inserted into the slot frame in a sliding mode through an elastic cavity bag, the sealing sliding plate is slidably sleeved on the plurality of conductive thimbles, the side wall of the elastic cavity bag is communicated with the flowing cavity through a liquid guide pipe, an elastic protruding film is arranged on the inner wall of the slot frame in an attached mode, an expansion cavity is formed by the elastic protruding film and the inner wall of the slot frame, the expansion cavity communicateswith the flowing cavity through a guide groove, and the elastic protruding film is elastically expanded and clamped into a clamping groove in the outer wall of the conductive plug. According to the invention, the phenomenon that the conductive plug is separated from the slot frame due to the fact that the controller is installed in an environment with frequent vibration is effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of controllers, in particular to a modular programmable logic controller. Background technique [0002] A programmable logic controller (PLC) is a specialized computer control system configured to execute software that continuously collects data about the state of input devices to control the state of output devices. A PLC typically includes three main components: a processor (which may include volatile memory), volatile memory including an application program, and one or more input / output ( I / O) port. [0003] The existing patent discloses a programmable logic controller, the patent application number is 2013800750675, and the programmable logic controller has a control unit. In the programmable logic controller, the control units are provided such that the side surfaces of the control units adjacent to each other are spaced from each other. In the programmable logic controller, as the control unit, the ...

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Problems solved by technology

[0004] Although the above-mentioned patent can easily obtain heat dissipation characteristics adapted to the setting environment; but when the controller is used in an environment with high vibration frequency, since the conductive jack on the controller and the external conductive wire are basically simple Plug-in connection, when the vibration frequency is too high, it is easy to cause the conductive plug to be separated from the conductive jack of the controller, which will affect the stable electrical connection effect of the controller

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