Functions
5.2 Intelligent IO devices (I-devices)
PROFINET with STEP 7 V15
Function Manual, 12/2017, A5E03444486-AH
121
In addition to its role as IO controller, an I-device can also be used via a PROFIBUS
interface as DP master for a lower-level PROFIBUS system.
Figure 5-8 I-device with lower-level IO system
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