changes Possible modifications
Adding or removing mod‐
ules components in distrib‐
uted I/O modules
● DP slaves with redundant interface modules (for example, ET 200M,
DP/PA Link, Y Link)
● IO devices with redundant interface modules (for example:
ET 200SP HA)
● Non-redundant DP slaves in any DP master system
● Non-redundant IO devices in any PROFINET IO system (CPU410
with firmware >= V8.2 is necessary)
● Modules in modular DP slaves
● Modules in modular IO devices (ET200SP HA only)
● DP/PA Coupler
● PA devices (process automation)
● FF devices
● Use of a free channel or reassignment of a utilized channel on an
existing module
Changing the parameters
settings for a module
● Editing parameters
Additional information
You can find detailed, step-by-step instructions on the procedure for plant changes in runtime
in the manual
Automation System S7-400H; High Availability Systems.
Note
Note the following information:
● The procedures described for PCS 7 can be found in the
Automation System S7-400H;
High Availability Systems
manual, "Modifying the System During Operation" section.
● Make sure that all systems are free from faults and that the H-system is operating
redundantly and without errors after any modification to the plant.
● If you violate one or more rules in this procedure, the high availability system may respond
in ways that restrict its availability, up to and including failure of the entire process control
system.
The following table is an overview of the descriptions. The procedures described for making
changes in runtime assume that the system is designed redundantly and that your aim is to
achieve this again.
You can find the procedure
used to replace compo‐
nents ...
....
in the manual
Automation System S7-400H; High Availability Sys‐
tems
in section
...
Components Adding Components in PCS 7
Removing Components in PCS 7
Changes to the memory components of the CPU
Parameter Editing CPU Parameters
Changing the parameters settings for a module
Replacing components and plant changes
6.2 Plant changes in runtime
High Availability Process Control Systems (V9.0)
Function Manual, 05/2017, A5E39221836-AA 197
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