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S5-95F
2.5.3
Operating Statuses of the S5-95F Following Power-Up
Table 2-7. Operating Statuses of the S5-95F Following Power-Up
Operating
Status
System
ON/OFF switches of
initialization
both subunits in "1"
position
STOP
System initialization
executed successfully
Position of RUN/STOP
switches irrelevant
STARTUP
RUN/STOP switches of
both subunits in "RUN"
position
RUN
STARTUP executed
successfully
Both RUN/STOP
switches in "RUN"
position
EWA 4NEB 812 6210-02
Prerequisite
Subunits are synchronized
• All outputs are disabled
• In the safety mode, the S5-95F
• In the test mode, the control
• Self-tests are executed, but no I/O
• All outputs are disabled
• User program is not yet processed
• Execution of the complete self-test
• Process I/O images, timers and
• DB1 parameters are accepted
• OB21/22 are processed
• External I/Os and onboard I/Os are
• Scan monitor is switched off
• Time-controlled and interrupt-
• Execution of the complete
• Process I/O images, timers,
• Scan monitor is active
• OB1 is processed
• Input modules are read
• Output modules are addressed
• Time-controlled and interrupt-
Design, Functions and Operation
Characteristics of the
Operating Status
loads the control program from the
memory submodule
program is not loaded
automatically
test
in the safety mode
non-retentive flags and counters
are set to zero
not yet addressable
controlled processing are not
possible
additional self-test routine once
within one hour
counters and flags are compared
cyclically
driven processing not possible
Optical
Display
STOP LEDs
flickering
STOP LEDs show
steady light
STOP and RUN-
LEDs show steady
light
RUN LEDs show
steady light
2-17
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