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！