Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 537)

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DMS 4.1 EN 03/2011 TD29 535
Call Stack
Symbol:
This command (category 'View') opens the Call Stack window. When you are stepping
through a program in online mode, always the currently reached step position will be
indicated there with its complete call path.
The Call Stack window below the title bar always displays the name of the currently
concerned Application and the name of the Task controlling the currently reached
POU.
The call stack is displayed as a list of positions, each described by POU name, Location
and - in case of instances - with the Instance Path. Depending on the editor, the
location is described by the line and column numbers (text editor) or by the network or
element numbers (graphic editors).
The first line in this list, indicated with a yellow arrow, describes the current step
position. If this position is within a POU which is called by another POU, the position of
the call will be described in the next line. If this POU again is called by another POU,
the call position follows in the third line, and so on.
The call stack view is also available in offline mode resp. during normal online run. In
this case The position which was last viewed during an online stepping session will be
still displayed, but in greyed letters.
Abb. 284 Call Stack view, Current position "fbdld", called by "PLC_PRG"