S5-115F Manual System Startup
yes=RAM
no
yes
no
yes
Has
user memory
submodule been
changed?
Cold restart after POWER ON
Generate user memory
submodule identifiers
Initialize S5-115F
User memory
type valid?
no
Lesser STOP loop
a
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Was power
off; has NAU rou-
tione been
run?
no
Safety operation if EPROM, EEPROM
Test operation if RAM
Determine safety/test mode
according to user memory
type
Has
there been a RAM
error?
yes
Inhibit restart
(NINEU bit)
Delete both error DBs; do
not delete any passivation
information
OS initialization:
Defaults
User memory
type= RAM?
Overall reset and
initialize RAM
(red and green LEDs off)
Lesser STOP loop
Enable output of both
error DBs
a
a
a
a
a
a
a
a
a
a
yes
no=
EPROM,
EEPROM
yes
no
yes
no
Subunit
ID not
identical
Lesser STOP loop
Subunit
identifier already
entered?
Lesser STOP loop
STOP program
Lesser STOP loop
Figure 4-5. Restart after POWER ON
EWA 4NEB 811 6148-02
4-9
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