Memory
n
PMC9212Ex only:
–
2GB working memory (RAM).
–
12MB program memory.
–
32MB data memory.
–
512kB retentive data memory.
n
PMC9216Ex only:
–
2GB working memory (RAM).
–
12MB program memory.
–
32MB data memory.
–
3072kB retentive data memory.
n
During operation, the operating system stores temporary data and parts of the user
program in the
working memory
.
n
With MRESET you can set the CPU to the
Ready
state without a power cycle. This
unloads the working memory, among others.
The
parametrization memory
as the sum of program and data memory provides memory
for:
n
Current firmware version
n
Overlay file system
for user program, configurations, user data and firmware adjust-
ments.
Use of the
overlay file system
:
n
As soon as you configure the CPU or make changes to the current firmware version,
data are generated in the
overlay file system
.
n
By
‘Resetting to the factory setting type 1’
, you can delete the
overlay file system
,
among others. The current firmware version remains, but all changes to it are dis-
carded.
‘Reset to factory settings type 1’ page 71
n
By
‘Resetting to the factory setting type 2’
, you can delete the
overlay file system
and
the current firmware version, among others. The current firmware version is over-
written by the original firmware version and the delivery state of the CPU is restored.
‘Reset to factory settings type 2’ page 72
CAUTION!
Damage to the internal parametrization memory due to high data
traffic!
–
Due to frequent write accesses at applications with high data traffic
e.g. data logger applications to the overlay file system, the internal
parametrization memory of the CPU may be long term damaged and
lead to a device defect.
–
For applications with high data traffic, use an external Yaskawa SD
card as a storage medium for the overlay file system.
n
All data that were marked as retentive in iCube Engineer during configuration are per-
manently stored here.
n
In the event of a power failure, retentive data are automatically backed up.
n
By MRESET or resetting to factory setting type 1/2 you can, among others, delete the
non-volatile memory for retentive data.
Working memory
Parametrization memory
Non-volatile memory for
retentive data
iC9200 Series
Deployment
Memory management > Internal memory
HB700 | CPU | PMC921xEx | en | 23-06
68
Summary of Contents for iC9200 Series
Page 123: ...Notes Data Sheet...
