Chapter 3 Deployment Of The Cpu 821X; Start-Up Behavior - Adam 821x Manual

Chapter 3 Deployment of the CPU 821x

Start-up behavior

Turn on
power supply
OVERALL_RESET
Start-up after
delivery
Start-up with valid
data on the CPU
Start-up with
empty battery
3-2
After turning on the power supply, the CPU switches to the operating mode
that is fixed by the operating mode lever at the CPU.
Now you may transfer your project from your projecting tool into the CPU
via MPI resp. plug-in a MMC containing your project and request an
OVERALL_RESET.
The following picture shows the approach:
RN
3Sec.
ST
MR
R
S
PW
SF
FC
MC
Note!
The transfer of the user application from the MMC into the CPU takes
always place after an OVERALL RESET!
After delivery the CPU is totally clear.
After a STOP→RUN transition, the CPU switches to RUN without
application.
The CPU switches to RUN with the application located in the battery
buffered RAM.
The battery is loaded directly via the integrated power supply and provides
a buffer for up to 30 days. If this time is exceeded, the battery may be
totally discharged and the battery buffered RAM is erased.
In this state the CPU starts an overall_reset. If a MMC is plugged in, the
program of the MMC is transferred into the RAM.
Depending on the selected operating mode the CPU switches to RUN resp.
stays in STOP.
This procedure is fixed in the diagnostic buffer with this entry: "Automatic
start OVERALL_RESET (unbuffered POWER-ON)".
RN RN
ST ST
MR MR
R R
S S
PW PW
SF SF
FC FC
MC MC
3 Sec.
ADAM 8000 Manual CPU 821x – Rev 1.1
CPU ADAM 821x
RN
ST
MR
R
S
PW
SF
FC
MC