Siemens ET 200SP HA - Maintenance; 5.1 Exchanging the BusAdapter or interface of the distributed I;O

CiR (Con󹪝gration in RUN) disabled
When the "Shared Device" function is enabled, you can only make con󹪝guration 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
e󹪜ects:
• 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 con󹪝gured as shared, they must be assigned to the same IO
controller.
3.4.5 IO device as shared device
De󹪝nition
Shared Device is a function of an IO device. This function allows you to split submodules of an
IO device between di󹪜erent IO controllers. Data from sensors in close proximity can be passed to
di󹪜erent 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 con󹪝gured on a redundant IO controller, all submodules of the interface
module must be assigned to the redundant IO controller.
During con󹪝guration, I/O addresses for the submodules (assigned to the controller) can be
assigned as usual.
3.4.6 Access types
De󹪝nition
Each submodule can be assigned to only one IO controller. The IO controller has certain rights
depending on the access type.
Product overview
3.4 Shared Device
IM 155-6 PN HA
Equipment Manual, 09/2021, A5E39262148-AE 17