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請各位大哥幫下小弟，我現在用三菱FX2N與DL-RS1A通信，在DL-RS1A上RD閃爍，但是SD不閃爍沒有數據反饋回來，查資料書是通信設置問題，但是我檢查多篇確定兩邊通信設置是一樣的，請各位大哥看下是什么問題？主模塊是：GT2-71N 用的是FX2N-232BD,
                                  發送接收程序如下：MOV  H1387  D8120
                                                                      RS D100 K8 D200 K12
                                                                      MOV  H5352  D100
                                                                      MOV  H2C30  D101
                                                                      MOV  H302C  D102
                                                                      MOV  H3030  D103
                                                                      MOV  H330D  D104
                                                                      MOV  H0A00  D105
                                                                     SET  M8122  

    請大哥們幫幫忙，現在就快趕著要出機啦，謝謝啦！

不看其它，就簡單的這幾句就有問題！
數據設置要放在RS之前