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                                            wuccangel

Ask for help, unable to communicate with PLC via UART;

Sending "FFFFMFGT1" via UART PLC does not return a message; S7-1200 1212C DC/DC/DC 6ES7212-1AE40-0XB0; Fw 4.2.3； hope to get help, thanks，thanks，thanks Here is my code， `#include #include #include #include #include...