Siemens SIMATIC PCS 7 Function Manual page 106

Advantages of fault-tolerant components
4.2 SIMATIC H Station
As of PCS 7 V7.1, the characteristics of the redundant input/output modules are set for channel-
based reaction to channel faults. The function in the AS depends on the employed PCS 7
library and the modules.
Depending on the configured module, the code is automatically generated for the automation
system based on the optimal capabilities of the module.
Passivation reaction of the modules
You will find information on which modules are released for which passivation reaction in the
documentation
Passivation reaction
Module-based
Group-based
Channel-based
Requirements
● The PCS 7 project is open in SIMATIC Manager.
● An H-CPU is configured in HW Config.
● S7 driver blocks from the "Redundant IO (V3.0)" or "Redundant IO (V4.0)" library
Procedure
1. In the component view, select the SIMATIC H station.
2. Double-click the "Hardware" object in the detail window.
HW Config opens.
3. Select the CPU you are using on slot 3.
4. Select the menu command Edit > Object Properties.
The "Properties - CPU ..." dialog box opens.
5. Select the "H Parameters" tab.
6. Please make a note of which data blocks in the "Data block no." input box are defined as
standard transmitters so that you do not use them in your configuration.
7. Select the required setting for the passivation behavior from the "Passivation behavior" list
in the "Redundant I/O" area.
– Module-based when the "Redundant IO (V3.0)" library is used
– Channel-based when the "Redundant IO (V4.0)" library is used
Additional information
● Function manual
functions
● Documentation
106
PCS 7 - Released Modules .
Reaction of the module
The module is passivated if a fault occurs.
If a fault occurs in a channel, the group of channels is passivated in a
module in which a least one fault has occurred.
Only the channels on which the fault occurred are passivated.
Process Control System PCS 7; software update without utilization of new
Process Control System PCS 7; PCS 7 - Released Modules
Fault-tolerant Process Control Systems (V8.1)
Function Manual, 11/2014, A5E34878832-AA