ISPSoft User Manual

ISPSoft User Manual
Set TRIG_1 to OFF.
Open the window for ET_INS_1. TRIG in the window remains ON. This indicates that the states of
the symbols in a function block will be retained after the function block is executed.
Open the window for ET_INS_2. TRIG in the window is OFF. The state of TRIG in the window for
ET_INS_2 is different the state of TRIG in the window for ET_INS_1. This indicates that the function
block instances operate independently.
After the users follow the steps above, they can draw the following conclusions.
1. If the flag connected to the En pin of a function block is OFF, the program in the function block will
not be executed.
2. The states of the symbols in a function block will be retained after the function block is executed.
3. The function block instances in a project operate independently.
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