The invention relates to the technical field of PLC detection, and provides a QT-based cross-platform PLC board level tool testing
system, which comprises QT-based cross-platform board level tool
testing software, a power supply module, a to-be-tested PLC module and an auxiliary testing module, wherein a PC mounted by the QT-based cross-platform board level tool
testing software is connected with the to-be-tested module via a
serial port line and communities with a lower
computer testing program; the power supply module is connected with the to-be-tested module for providing power for the tool testing; and the to-be-tested module comprises a CPU module, a coupler module, a
digital input module, a digital output module, an analog input module, an analog output module, and the to-be-tested module is connected with the auxiliary testing module via the
serial port line, a cable and an analog line. When the tool is used for testing different single board modules, the auxiliary testing module is used for providing a unified testing environment, the interface
connectivity or function testing precision is high,
automatic testing is realized, the testing result is accurate, the
workload is reduced, and the working efficiency is improved.