Monitoring and Testing the Sequential Control System
S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01
11-7
• The following table shows the lists available:
List Content of the list
Cross-reference Overview of the use of addresses in the memory areas I, Q,
M, P, T, C and DB within the user program.
Program structure Call hierarchy of the blocks within a user program and
overview of the blocks used and their interdependencies.
Reference list Shows the use of the following:
• Inputs, outputs and memory bits
• Timers and counters
List of unused addresses Overview of all the symbols found in the symbol table but not
used in the parts of the user program for which reference
data exist.
List of addresses without
symbols
Overview of all the absolute addresses that are used in parts
of the user program for which reference data exist but for
which there is no symbol defined in the symbol table.
If the reference data "Program Structure" or "Cross-Reference List" are displayed,
you can jump to the point in the user program at which a selected block or address
is used with the menu command Edit > Go To > Location.
Generating Diagnostic Data
Diagnostic data are generated when you save the FB if you select the "Generate
PDIAG Data" option in the "General" tab of the "Application Settings" dialog box.
You must also select the "Message with ALARM_SQ/ALARM_S" option in the
"Messages" tab of the "Block Settings" dialog box.
Updating Diagnostic Data After Rewiring
If you have modified addresses in the SIMATIC manager using the menu
command Rewire, and the addresses are also used by the sequencer, the
corresponding diagnostic data are only updated when you open the corresponding
S7-Graph FB again and save it.
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