Configuring
4.11 Planning subnets
S7-300, CPU 31xC and CPU 31x: Installation
Operating Instructions, Edition 08/2004, A5E00105492-05
4-47
Slots and Submodules
A PROFINET node can have a modular structure similar to a DP slave. A PROFINET node
consists of slots in which the modules/submodules are inserted. The modules/submodules
have channels over which the process signals are read in or output.
The following graphic illustrates the situation.
10 11 11 11
12
12
12
12
12
12
12
12
Figure 4-2 Module, Submodule, Slot, and Channel
Number Description
10 Interface module
11 Slot with module/submodule
12 Channel
It is always possible for a slot to be divided into subslots that contain submodules.
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