Monitoring and Testing the Sequential Control System
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
11-2
C79000-G7076-C526-01
Requirements for Activating the Test Functions of S7-Graph
Before you can test an S7-Graph program, the following requirements must be
met:
•
The PG must be connected online to the CPU.
•
The program was compiled without errors.
•
The S7-Graph FB must be called in a block that is executed cyclically (for
example OB1).
•
The program (in other words the FBs, DBs and OBs) must be loaded on the
CPU.
•
The CPU must be in the RUN (read) mode or RUN-P (read and write) mode.
11.1
Monitoring and Test Functions in S7-Graph
11.1.1
Monitoring the Status Information
Principle of the S7-Graph Monitoring Function
When you start the monitoring function, you also start the test mode for checking
the sequential control system. The individual steps and conditions and the signal
state of the addresses are displayed in different colors on the screen depending on
the status. The step-by-step execution of the program can therefore be followed
visually on the screen.
Depending on the current state of the sequencer, the status is displayed for the
following components:
•
Steps and conditions
•
Signal state of the addresses
Changing the Color Settings for the Status Display
You can select and set the required color for a particular status display individually
using the menu command Options > Application Settings in the "Editor" tab
page of the "Application Settings" dialog box.
Status Display for Steps and Conditions
The status of the following elements of the sequencer is shown in color:
•
Steps: Active and disturbed steps are shown in different colors.
•
Permanent conditions, transitions, interlocks and supervisions:
