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Input/output data is not available. Error in lower component.
Does the subject want to ask "how to solve the problem that the input and output data are unavailable and the lower component is wrong?"

1. According to official website of Supercomputing Center of China University of Science and Technology, check whether the configured hardware is consistent with the actual hardware order number.

2. Check online whether the firmware version of the configuration PLC is consistent with the online firmware version.

3. Reinstall the PLC module.