Siemens SIMATIC S7-1200

Communication
11.2 PROFINET
S7-1200 Programmable controller
936 System Manual, V4.2, 09/2016, A5E02486680-AK
11.2.14
Shared devices
11.2.14.1
Shared device functionality
Numerous IO controllers are often used in larger or widely distributed systems.
Without the "Shared Device" function, each I/O module of an IO device is assigned to the
same IO controller. If sensors that are physically close to each other must provide data to
different IO controllers, several IO devices are required.
The "Shared Device" function allows the modules or submodules of an IO device to be
divided up among different IO controllers. This allows flexible automation concepts. You
have, for example, the possibility of combining I/O modules lying near each other into an IO
device.
①
PROFINET
②
Logical assignment
Principle
Access to the submodules of the shared device is then divided up among the individual IO
controllers. Each submodule of the shared device is assigned exclusively to one IO
controller.