July 2013 9.1 PLC Functions 1673
Display of symbolic
operands in the
WATCH LIST
Press the WATCH LIST soft key to call the menu of the WATCH LIST
function.
Press the SYMBOL LIST soft key to open a list box with all local and global
operands used in the PLC program.
Select the desired operand with the arrow keys and load it with the SELECT
soft key or with the ENT key.
Press the END soft key to close the list box.
Display of operands
in the WATCH LIST
Press the WATCH LIST soft key to call the menu of the WATCH LIST
function.
Press the ZEILE EINFÜGEN soft key.
In the ADDR column, enter the absolute address of the operand, i.e. W1022.
Press the ENT key.
Add operands
to I/O-FORCE LIST
Press the WATCH LIST soft key to call the menu of the WATCH LIST
function.
Press soft key ADD TO I/O-FORCE LIST.
The operand is written to the I/O-FORCE LIST, and a message confirming the
transfer of the operand to the I/O-FORCE LIST appears.
Internal process of
the WATCH LIST
function
DEBUGPATH = PLC:\DEBUG is automatically entered in OEM.SYS. This is the
working directory for the WATCH LIST function.
If you are working with the source files on the control, a *.WLC file is
generated from the *.MAP file when compiling the PLC program. This *.WLC
file has the same name as the PLC main program, and contains all local and
global symbolic operands. The *.WLC file is saved in the working directory
mentioned above for the WATCH LIST function.
The selection window is used to select the symbolic operands from the
*.WLC file for the WATCH LIST. The first time operands are selected and a
WATCH LIST is created, the file TEMP.WLT is created and saved in the
working directory. The entry in OEM.SYS is expanded to DEBUGPATH =
PLC:\DEBUG\TEMP.WLT. This ensures that when the WATCH LIST function is
next called, the most recent WATCH LIST will be active.
If there is more than one *.WLT file in the working directory, the desired file
can be chosen with PGM MGT. Selecting a new *.WLT file also changes the
DEBUGPATH = entry in OEM.SYS.
Operands can only be selected with the SYMBOL LIST soft key if you are
working with the *.SRC source files of the PLC program on the control.
Otherwise the error message Selection list is empty appears.
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