Recommendation
Avoid the situation in which different PO volumes are licensed on each of the System
Expansion Cards of the CPUs.
● If the System Expansion Card is functioning when the CPU fails, insert the System
Expansion Card of the failed CPU into a substitute CPU. The substitute CPU will then
receive the license key and the PO volume of the System Expansion Card.
● If redundant operation is not possible due to different PO volumes, operate the CPU with
the larger PO volume as the active CPU (MASTER).
Objective
Make the PO volumes in the redundant system uniform (e.g., equal to 800 PO) through a PO
upgrade.
Requirements
● You can access the CPU for which you want to perform the PO upgrade with the engineering
station via a PCS 7 project.
● The CPUs for which you want to upgrade the system expansion card are switched on and
functional. Making the preparations does not depend on the CPU operating mode.
Basic procedure
1. Make PO volumes of both CPUs uniform:
Using CPU 410 Expansion Packs, generate the PO-Activation-File for the CPU (with the
lower PO volume), so that the system expansion cards of the redundantly configured
automation system have the same PO volume after the upgrade. You must activate expert
mode to create the PO-Activation-File in the "Connect target system" dialog box.
2. Run the upgrade for this CPU.
NOTICE
Active CPU with the lower PO volume (master)
If the CPU with the lower PO volume is the active CPU (master) in the automation system,
this CPU can go to STOP after multiple transfer errors when performing the upgrade.
Additional information
● Section "Ordering an upgrade for a CPU 410-5H (Page 53)"
● Section "How to prepare for the upgrade of the System Expansion Card (Page 54)"
● Section "How to perform the upgrade of the System Expansion Card (Page 58)"
Ensuring Availability
3.5 Licenses and license keys
Service Support and Diagnostics (V8.2)
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Service Manual, 03/2016, A5E36200111-AA
