IO port configuration device and method and PLC configuration software

Abstract

The invention discloses an IO port configuration device, PLC configuration software and an IO port configuration method thereof. The device comprises a definition unit which defines resources of a logic port and uses the logic port to define variables, wherein the logic port is a virtualization port of a physical port of controlled PLC hardware, and the logic port uses resources of the logic portin PLC application program codes; the device further comprises a mapping unit which is used for configuring a mapping relationship between the logic port and a physical port of the controlled PLC hardware; and the mapping unit is further used for realizing mapping and transmission of data and functions between the logic port and the physical port of the controlled PLC hardware according to the mapping relationship between the logic port and the physical port of the controlled PLC hardware, which is obtained by configuration, under the condition that a PLC application program runs in the controlled PLC hardware. According to the scheme, by decoupling the application program and the controlled mainboard hardware, the transportability of the application program developed by the configurationsoftware is improved, and the code change efficiency of the application program is improved when IO resources of the hardware mainboard are replaced.

Description

technical field [0001] The invention belongs to the field of computer technology, and in particular relates to an IO port configuration device, PLC configuration software and a method for configuring the IO port thereof, and in particular to a virtual IO port configuration of the PLC configuration software, the PLC configuration software and the IO port thereof Virtualization configuration method. Background technique [0002] Configuration software, also known as configuration monitoring system software, refers to the special software for data acquisition and process control, and also refers to the software platform and development environment at the monitoring level of the automatic control system. The application program written by PLC (programmable logic controller) configuration software reads input from the input port (Input) of the controlled hardware motherboard, performs logic processing, and then sends the output to the output port (Output). [0003] In the applic...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of IO port configuration device, PLC configuration software and IO port configuration method thereof, to solve the problem of clearly specifying the used port address when declaring variables in the application program code of the PLC configuration software. When the IO resources of the hardware motherboard need to be changed one by one, the orig

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