Modify And Download The User Program - Siemens SIMATIC CPU 410 System Manual

Plant changes during redundant operation - H-CiR
12.8 Adding components
Reaction to exceeding the monitoring times
When one of the monitored timers exceeds the configured maximum value, the update is
aborted and no master switchover is performed. The H system remains in solo mode with
the previous master CPU and attempts to later perform the master switchover under certain
conditions. For details, refer to the section Time monitoring (Page 120).
12.8.4

Modify and download the user program

Starting situation
The H system is operating with the new hardware configuration in redundant system state.
Note
The following program changes are not possible in redundant system state and result in a
switch to STOP system state (both CPUs in STOP):
• Structural modifications to global DBs.
• Compression of the CFC user program
Before the entire program is recompiled and reloaded due to such modifications the
parameter values must be read back into the CFC, otherwise the modifications to the block
parameters could be lost. You will find more detailed information on this topic in the
S7, Continuous Function Chart
Procedure
1. Adapt the program to the new hardware configuration. You can add the following
components:
– CFC and SFC charts
– Blocks in existing charts
– Connections and parameter settings
2. Configure the added channel drivers and connect them to the newly assigned symbols
(see section Change hardware configuration offline (Page 208)).
3. In SIMATIC Manager, select the charts folder and choose the "Options > Charts >
Generate Module Drivers" menu command.
4. Compile only the modifications in the charts and download them to the target system.
5. Configure the interconnections for the new CPs on both communication partners and
download them to the target system.
Result
The H system operates all plant hardware with the new user program in redundant system
state.
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manual.
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
CFC for