需要在过程工厂控制软件中增加2个工作状态变量（二进制），一个是表示水蒸馏工作模式变量，另外一个是表示酒精精馏工作模式变量，都用0表示不工作，用1表示该模式正在工作。人家工程师这样回答：You can use this parameter "SFC_STATE", it is an unsigned 32-bit value, Format: DWORD .
The following is the detail Bit meaning of the DWORD.
Bit Meaning Source
0-4 Operating state Bit0-4 (the states 0 through 4 are identical to the coding of SFC)
So, The solution is that you can use the Bit 0 of "SFC_STATE" to identify whehter the SFC is Working or not.
懂的人讲解下在何处引用了这SFC_STATE变量？在哪里可以找到？