Plain Speaking - Siemens SIMATIC S7-200 Manual

"Plain Speaking (1)"

So far you have been working in the PLC program with operands in the "PLC language" such as E0.3
or T34, but if the program is longer, it is not easy to read with these operands.
It would be a good idea if we could have the switch designations or some other plain text.
This is exactly what you can do with symbolic programming.
2.
A window is displayed in which you can edit the symbol table. Enter the element that you want to
appear as plain text later on under "name". Under address, enter the operand that you want to
have replaced by a symbolic name. Under comment, you can enter a text that you find helpful.
Don't forget to save your work.
Hardware Software
1.
For symbolic addressing, the symbol table
must be filled in. Select the symbol table
from the operations tree or by selecting
Symbol table in the View menu.
Basic 1st Exercise
Settings Program
Continued on next page
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Appendix
Exercises
38