QT-based cross platform PLC product tool test system and test method thereof

Abstract

The invention relates to the technical field of PLC detection, and especially relates to a QT-based cross platform PLC product tool test system and a test method thereof. The QT-based cross platform PLC product tool test system provided by the invention comprises a power supply module with interconnected guide rails, a CPU module, an DI module, an AO module, an occupation module, an AI module, two bus coupler modules, two bus tail-end modules and two DO modules, wherein the EH0 of the CPU module is connected with a host computer so that data is transmitted through an ETH0 transmission protocol on the basis of EtherCAT, the host computer is connected with an AI / AO automatic test module, the AI / AO automatic test module is connected with the AI module, the bus tail-end modules are connected with the bus coupler modules, A ends of the DO modules are connected with the B end of the DI module, the first DO module, the DI module, the AO module and the AI module are each provided with an onsite IO terminal interface, and the CPU module reserves ETH1 and realizes interconnection with an IO system through an X0 master station port. The test precision is high, automatic testing is realized, and the rest result is accurate.

Description

technical field [0001] The invention relates to the technical field of PLC detection, in particular to a QT-based cross-platform PLC product tooling test system and a test method thereof. Background technique [0002] In the prior art, the testing of PLC products is to test whether the PLC products have defects in hardware or software. Small PLC products are divided into CPU unit and expansion unit. The CPU unit has rich functions, and there are many functions to be measured. Generally, it is necessary to measure the switch input and output of the main body, analog input and output, communication interfaces (including RS485, RS232, CAN), SRAM power-down data retention function test, and RTC clock accuracy test. And EPROM read and write test and the power supply of the expansion bus; the expansion unit generally only measures the corresponding function and the expansion bus interface. General tooling test products can only test for defects in hardware, and the accuracy of s...

AI Technical Summary

Problems solved by technology

The patent also has the problem that the patented tooling test product can only test hardware defects, and the test accuracy of software or functions is low, the workload is huge, and the test results are inaccurate.

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