Basic Concepts for Programming an S7-200 CPU
4-40
S7-200 Programmable Controller System Manual
A5E00066097-02
3. The warning in Figure 4-23 appears. When you select the “Continue” button,
the program from the connected CPU is uploaded and the application is in
RUN mode edit. No restrictions on edits are enforced.
Cancel
Warning!
Changing the program during RUN mode can result in unex-
pected system operation which can cause serious injury,
death, and/or damage to equipment. Only authorized
personnel who understand the limitations of changing a
program in RUN mode with respect to system operation
should continue.
Press the Help button for information on the dangers
and limitations of editing a program in RUN mode.
H
elpContinue
Program Edit in RUN Mode
Figure 4-23 RUN mode Edit Dialog Box
Note
Positive (EU) and Negative (ED) transition instructions are shown with an operand.
To see information about the previous state of edge instructions, select the Cross
Reference icon in the View portion of your screen. The Edge Usage tab lists
numbers for the edge instructions in your program. Be careful not to assign
duplicate edge numbers as you edit your program.
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