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iC9200 Series
5.5.4
Comparison of the checksums
Proceeding
5.6
Memory management
5.6.1
Internal memory
Overview
Working memory
Parametrization memory
HB700 | CPU | PMC921xEx | en | 24-04
2.
Double-click in the 'Plant' area on 'SafetyPLC' node.
�� The cockpit of the safety PLC is opened.
3.
Go online with your Safety CPU via
4.
Activate debug mode with
�� You now have the opportunity to debug your user program and control variables.
You can use the force function to specify fixed variable values. You can set
breakpoints to temporarily stop your user programme.
As soon as you place safety components in your project, a checksum is automatically
calculated for your safety project. After the project transfer, the checksum of your project
and the CPU, which is connected online, must be identical. The checking procedure is as
follows:
1.
Establish an online connection to the CPU.
2.
Double-click on 'SafetyPLC'.
3.
Select the 'Safety cockpit' editor and click on 'Overview'.
�� The following checksums must be identical:
■
Checksum CPU: 'Safety PLC project information'
■
Checksum Project: 'Engineering project information'
Please note that, depending on the firmware and the components used,
not the entire memory area is available.
Memory
■
PMC9212Ex only:
–
2GB working memory (RAM).
–
12MB program memory.
–
32MB data memory.
–
512kB retentive data memory.
■
PMC9216Ex only:
–
2GB working memory (RAM).
–
12MB program memory.
–
32MB data memory.
–
3072kB retentive data memory.
■
During operation, the operating system stores temporary data and parts of the user
program in the working memory.
■
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:
■
Current firmware version
■
Overlay file system for user program, configurations, user data and firmware adjust-
ments.
Deployment CPU iC921xM-FSoE
Memory management > Internal memory
.
.
⮫ 'MRESET'...page 127
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