siemens s7 function blocks

[noc231073]

hi guys iam new to using siemens s7 ,
and I have a question with regards to the function blocks.
how does one open a function block to get to the root code for condition,

ie: I have a compressor control block and I need to find out what condition for a certain alarm.

 

[sigmadelta]

Double-click the function block to open it. The inputs, outputs, static and temp variables have names inside the FB. You can do a search for the names to trace them.

 

[wolverine1981]

noc231073,

As sigmadelta has stated by "Double-click the function block to open it" you will be able to view its logic. But the function block could also be locked by the programmer to hide its constants. A password will be needed.

Tom