Automated input simulation for simulated programmable logic controller

A technology for programming logic and controllers, applied to program control in sequence/logic controllers, controllers with specific characteristics, program control, etc., can solve time-consuming and other problems

Active Publication Date: 2015-09-09
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this automation may require specialized skills using third-party tools and may be time-consuming to configure
Users may have to purchase licenses to use third-party tools

Method used

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  • Automated input simulation for simulated programmable logic controller
  • Automated input simulation for simulated programmable logic controller
  • Automated input simulation for simulated programmable logic controller

Examples

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Embodiment Construction

[0015] The inputs used for PLC simulation are themselves simulated automatically. In the case of manual changes to input values ​​in a simulation, a human may not replicate the speed, accuracy, and repeatability of the one or more hardware inputs provided during normal operation of the PLC. An easy-to-use mechanism for automating the input of a simulation is provided by automating the input and providing a graphical user interface (GUI) for user configuration of the input. Automated input functionality is integrated into the simulator such that a given program provides both input simulation and PLC operation simulation based on the input. Users can automate the input of simulations in a fast, precise and repeatable manner without special expertise or third-party tools. The changing timing can be simulated in real time, providing a more realistic modeling of the operation of the PLC.

[0016] figure 1 A method for input simulation in a simulated programmable logic controller...

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Abstract

Input simulation is provided (36) as part of simulating (38) a programmable logic controller. The simulator program itself includes a graphic user interface for the user to configure a sequence of changes in input values. For example, the value of a variable is to be changed at each of multiple times. The sequence is used to simulate (38) the PLC reaction to the changing input in real-time. The output is provided (40) in real-time.

Description

Background technique [0001] This embodiment involves simulating a programmable logic controller (PLC). PLCs are computing devices specifically designed to interact with the physical world. Interactions are defined by programs created by the user and loaded on the PLC. Programs typically use the state of inputs to determine the state of outputs. Example inputs are temperature sensors, buttons, switches, and human machine interface (HMI) panels. Other inputs include settings for the operation of the PLC, such as a temperature value as a set point at which an output is triggered to change in response to the input. Example outputs are control signals for conveyor belt, pump, fan and compressor controls. [0002] When creating a program, the user downloads the program to the PLC and checks that the PLC behaves as expected. If the program does not work as intended, the user determines the cause and changes the program (ie, "debugs"). Debugging is performed on the actual PLC ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/42G05B23/00
CPCG05B2219/13186G05B19/05
Inventor D.索特兰Y.董R.金格斯利J.W.科内特
Owner SIEMENS AG
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