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CiR (Configration in RUN) disabled
When the "Shared Device" function is enabled, you can only make configuration changes when
the CPU is in STOP.
Time stamping
The use of shared devices with the "Time stamping" function of signal changes has the following
effects:
• Only signals of the CPU to which the station with shared devices is connected can be
evaluated/compared.
• It is not permissible to compare signals with time stamp across CPUs.
Redundant modules (module pairs)
When redundant modules are configured as shared, they must be assigned to the same IO
controller.
3.4.5
IO device as shared device
Definition
Shared Device is a function of an IO device. This function allows you to split submodules of an
IO device between different IO controllers. Data from sensors in close proximity can be passed to
different IO controllers.
Description
Access to the submodules of the shared device is distributed among the individual IO controllers.
Each submodule of the shared device can be assigned exclusively to one IO controller.
When a shared device is configured on a redundant IO controller, all submodules of the interface
module must be assigned to the redundant IO controller.
During configuration, I/O addresses for the submodules (assigned to the controller) can be
assigned as usual.
3.4.6
Access types
Definition
Each submodule can be assigned to only one IO controller. The IO controller has certain rights
depending on the access type.
IM 155-6 PN HA
Equipment Manual, 09/2021, A5E39262148-AE
Product overview
3.4 Shared Device
17
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