Note
CPU failure
Communication is carried out by both controllers independently of one another. In the event
of failure of a CPU, communication with the other CPU is not interrupted, it continues to operate
without interruption. Error messages are output regarding the components that have failed.
● Resolve the fault and acknowledge the messages. Communication to the CPU that failed
is then automatically restored.
Configuring Shared Device
You have the following 2 options in HW Config when configuring the two controllers A-CPU
and F-CPU:
● You configure both of the controllers using the shared device function in a common project
● Using GDSML, you configure each controller independently in its own project
The first of these options is described in the following example.
Note
Detailed information on configuring with HW Config is provided in the STEP 7 documentation.
Example: 2 controllers in a common project
Start STEP 7:
1. Under S7, create an automation controller for the new project, in the example called A-CPU,
based on a SIMATIC 300.
Figure A-24 Creating a new S7 project
2. In HW Config, select the controller CPU 315-2 PN/DP and connect the PROFINET IO as
a communication network.
Communication
A.1 Communication
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160 Configuration Manual, 08/2017, A5E36912609A
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