Monitoring and Testing the Sequential Control System
S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01
11-5
Note
In a simultaneous branch, each path must contain a step to be activated.
1. Activate the selected steps with the "Activate" button.
2. Now switch the sequencer back to the automatic mode.
11.2 Test Functions of STEP 7
The following test functions are available for further analysis of the sequential
control system. Please note, however, that not all the functions available provide
information about an S7-Graph sequential control system:
• Monitor and modify variables
• Query the module status
• Query the operating mode
• Evaluate CPU messages
• Create reference data
• Create process diagnostic data
These functions provide you with further methods of debugging and supply
important information about the use of blocks and addresses. You can also select
these test functions directly in the SIMATIC Manager.
Note
If you require more detailed information about these topics, display the help texts
relating to the menu commands in the SIMATIC Manager.
Monitoring and Modifying Variables
With the menu command PLC > Monitor/Modify Variables, you can create a
variable table and monitor and modify the signal states of addresses (for example
input I2.3).
The signal states to be monitored can be put together individually in the variable
table by entering the required addresses in the displayed table.
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