Siemens SIMATIC STEP 7 V5.2 Getting Started page 32

Creating a Program in OB1
Programming a Memory Instruction in Statement List
If you want to see the difference between absolute and symbolic addressing, deactivate the
menu command View > Display > Symbolic Representation.
4-10
Select Network 2 and insert another
network.
In the first line, type the instruction A
with the symbolic name
"Automatic_On."
Complete the memory instruction and
save it. Close the block.
Example:
Symbolic addressing in STL
Example:
Absolute addressing in STL
You can find more information under Help >
Contents in the topics "Programming Blocks,"
"Creating Logic Blocks," and "Editing STL
Statements."
STEP 7 Getting Started
A5E00171228-01