小弟测试了一上午,编了无数个小程序,发现该测试程序不支持:
1:顺序控制继电器指令:SCR,SCRT,SCRE
2:移位寄存器指令:SHRB
上面的指令只要一出现,程序便无法运行.
3:数据块传送指令:BLKMOV_B,BLKMOV_W,BLKMOV_D
程序可以运行,但是该指令无效.
4:四则运算指令后面再接比较指令后,程序可以运行,但是结果不正确.
以上只测试了所有指令中很少的一部分.现在继续测试.
欢迎补充!!!!!!

有个问题，一个数据传送指令后，例如把2送个VD0,再接一个数据传送指令，例如把3送给VD1,运行完毕后发现VD0的值改变成一个随机数了，为什么？只使用了一条对VD0操作的语句呀！好像字节传送指令没这毛病，只有实数传送指令有这毛病。

补充：上面的数据传送指令的问题，如果是对整数或实数进行操作，应该使用VW0，VW2，VW4。。。。就是中间空出来一个地址，就正常了。这是为什么呢？

继续补充：数据传送指令对整数的操作，应为每个数留出两个地址空间。
对双整数和实数的操作，要为每个数留出四个地址空间。

楼上的问题是,你没有正确理解西门子数据的存贮格式.
VD0的存贮区=VB0+VB1+VB2+VB3
VD1的存贮区=VB1+VB2+VB3+VB4
VW0的存贮区=VB0+VB1
VW1的存贮区=VB1+VB2
VW2的存贮区=VB2+VB3
VW3的存贮区=VB3+VB4
看了这个你也许能明白

go on 补充：
TD200 模式下无法修改TD200中的参数
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时间继电器到了预设值,但bit位不置啊!!!

好象不支持LAD编程