Siemens SIMATIC S7-200 Руководство - Страница 40

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Siemens SIMATIC S7-200 Руководство
More exercises

5.4 Working with projects

5.4
Working with projects
5.4.1

Programming with symbols

So far you have been working in the PLC program with operands in the "PLC language"
such as I0.3 or T34, but if the program is longer, it is not easy to associate these operands
with their actual function within a control system. The program would be easier to read if we
could switch the operand names to plain text. This is exactly what you can do with symbolic
programming.
40
Getting Started - Beginners
Training Documents, 07/2007, A5E01031470B