FX2N-2DA的程序中TOP K1 K17 H0004 K1    BFM#17的b2位置1                                                                            H0004怎么代表#17的b2呢？
                                     TOP K1 K17 H0000 K1    BFM#17的b2位从1-0时，锁存低8位数据                                   H0000怎么也代表#17的b2呢？
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                                      TOP K1 K17 H0002 K1   BFM#17的b1位置1                                                                               H0002怎么代表#17的b1呢？
                                     TOP K1 K17 H0000 K1    BFM#17的b1位从1-0是，通道1执行D/A转换                                H0000和通道1 是怎么确认的
                                                                                  
                                                                                    我想请教H0000，H0002，H0004，和#17 寄存器的位有什么对应关系？  
                                                                                         看书上也没有明白。希望指点一二。                

看样子你需要首先去了解什么叫做二进制，然后再看手册。

H4化为2进制是0100，#17的b2为1，H2化为2进制为0010，#17的b1.为1