gordone

I found it now, Thank you.

Thank you for feedback, I think I wasent to clear in my explanation. I understand the part of the array, but I got lost further. I can see in the code that the input is used, please see attached screenshoot. But when I cross reef the symbol name I don`t get up something write to it, it must some logic somwhere who "unpack" the erray and load and transfer each bit (digital input), to the symbol names example IO_STB_DiTB33.2 ?? Is the only way to browse in the code to find the code who do the decoding og the word in the erray to bits?

Hi, I have a system running for years, but we will update system with some smal changes so I need to understand the communication between the PLC and the Remote I/O`s. Please see attached screenshoot from VAR_READ and VAR_WRITE from my software. In the logic have the progammer used symbol name, please see attached example. It`s from the data VAR block use to the symbol name I got lost... Where is the logic link between MB_Rx30 (in attached example) to symbol name IO_CCR_Di206A.0 ??? If someting is not clear, please ask.