利用三菱MXComponent程序进行与fx2n,Q系列等PLC的通讯测试程序。有读取plc自带通讯口，或者232口，或者485通讯三种方式，方便工控人员学习用-Mitsubishi MXComponent use of procedures and fx2n, Q series PLC communications test procedure. Have read Communications plc own mouth, or 2