Chapter 4 Deployment CPU 31x Manual VIPA System 300V
4-6 HB130E - CPU - Rev. 11/50
Start-up behavior
After the power supply has been switched on, the CPU changes to the
operating mode the operating mode lever shows.
Now you may transfer your project to the CPU via MPI from your
configuration tool res. plug in a MMC with your project and run an Overall
reset.
The following picture shows the approach once more:
3 Sec.
3 Sec.
PWR
RUN
STOP
SF
FRCE
MMC
DESL
RUN
STOP
MRES
PLC
PWR
RUN
STOP
SF
FRCE
MMC
DESL
RUN
STOP
MRES
PLC
PWR
RUN
STOP
SF
FRCE
MMC
DESL
RUN
STOP
MRES
PLC
PWR
RUN
STOP
SF
FRCE
MMC
DESL
RUN
STOP
MRES
PLC
1 2 3 4
Note!
The transfer of the application program from the MMC into the CPU takes
always place after an Overall reset!
When the CPU is delivered it has been reset. After a STOP
→RUN
transition the CPU switches to RUN without program.
The CPU switches to RUN with the program stored in the battery buffered
RAM.
The accumulator/battery is automatically loaded via the integrated power
supply and guarantees a buffer for max. 30 days. If this time is exceeded,
the accu may be totally discharged. This means that the battery buffered
RAM is deleted.
In this state the CPU executes an Overall reset. If a MMC is plugged in, the
application on the MMC is transferred into the RAM. Otherwise the CPU
accesses the application in the internal Flash and transfers this one to the
RAM.
Depending on the chosen operating mode, the CPU switches to RUN res.
remains in STOP.
This event is stored in the diagnostic buffer as: "Start Overall reset
automatically (unbuffered POWER_ON)".
Turn on power
supply
Overall reset
Default boot
procedure, as
delivered
Boot procedure with
valid data in the CPU
Boot procedure
with empty battery
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