S5-115F Manual
System Startup
”RUN” Mode
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All input and output modules are enabled before the start of cyclical program scanning.
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The program is scanned cyclically.
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The two subunits are synchronized.
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Timers that were started in the program run down.
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Input module signal states are read in, exchanged and compared.
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Output modules are addressed.
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S5-115F self-test runs (organized in time slices).
”STOP” mode, large Stop loop
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The program is not scanned.
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The two subunits are synchronized.
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The values of the timers, counters, flags, and process images that were current when the CPU
went into the ”STOP” state are maintained.
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Digital output modules are disabled (signal state ”0”). The “BASP” LED lights up.
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An S5-115F self-test runs (organized in time slices).
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Use of the programmer and SINEC L1 transfers are possible.
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Mode change possible.
STOP mode, lesser Stop loop
(activated if serious errors are detected)
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The program is not scanned.
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The subunits are not synchronized.
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The values of timers, counters, flags and process images are maintained.
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Digital output modules are disabled. The ”BASP” LED lights up.
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The self-test no longer runs.
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SINEC L1 transfers are no longer processed. Programmer operation is restricted to reading out
error DBs.
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Mode changes are no longer possible.
EWA 4NEB 811 6148-02
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