Search Function; Program Check, For Cpu 103 And Higher - Siemens S5-100U User Manual

S5-100U
4.9

Search Function

This function allows you to search for specific terms in the program and list them on the pro-
grammer's display panel. You can perform program changes at this point.
You can have search runs in the following programmer functions:
• INPUT
• OUTPUT
• STATUS
Some of the items you can search for are:
• Statements
• Operands
• Labels
• Addresses
Note
Search runs are handled differently by different programmers. The respective users
guides contain extensive information about search runs.
4.10

Program Check, for CPU 103 and Higher

When this programmer function is called up, program scanning is stopped at a definite point. The
cursor indicates this breakpoint, which is a statement in the program. The programmable controller
scans the program up to the statement selected. The current signal states and the RLO up to the
statement selected are displayed (as in the "STATUS" test function).
The program can be scanned section by section by shifting the breakpoint. Program scanning takes
place as follows:
• All jumps in the block called are executed.
• Block calls are executed immediately. The program check is not resumed until control is
returned to the calling block.
The following applies during the program check:
• The two mode LEDs are not lit.
• The program writes to the PIQ and reads out the PII.
• No process image (data cycle) is transferred.
• All outputs are set to zero.
EWA 4NEB 812 6120-02
(e.g., A I 0.0)
(e.g., Q 3.5)
(e.g., X 01); possible only in function blocks
(e.g., 0006 )
H
Start-up and Program Tests
4-11