Siemens C79000-Z7076-C552-01 ユーザーズマニュアル

New Functions in Version V4.02

12

Supplement to the STEP 7 User Manual V4.0

C79000-Z7076-C552-01

If you have been using this criterion to distinguish between different symbols, you
may experience difficulties with the new definition if:

Symbols differ from one another only in their use of upper and lower case
characters

Parameters differ from one another only in their use of upper and lower case
characters

Symbols differ from parameters only in their use of upper and lower case
characters

All three of these conflicts can, however, be analyzed and resolved as described
below.

Conflict:

If the symbol table has not yet been edited with the current version of the software,
the first of the non-unique symbols in the table is used when source files are
compiled.

If the symbol table has already been edited, such symbols are invalid; this means
that the symbols are not displayed when blocks are opened and source files
containing these symbols can no longer be compiled without errors.

Remedy:

Check your symbol table for conflicts by opening the table and saving it again. This
action enables the program to recognize the non-unique symbols. You can then
display the non-unique symbols using the filter “Non-Unique Symbols” and correct
them. You should also correct any source files which contain conflicts. You do not
need to make any further changes to the blocks, as the current (now conflict-free)
version of the symbol table is automatically used or displayed when a block is
opened.