Manual – DFE32B Fieldbus Interface PROFINET IO
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Introduction
Operating Behavior in Conjunction with PROFINET
Communication
model
The communication model of PROFINET IO is based on the many years of experience
with PROFIBUS DP-V1. The master slave access procedure was mapped on a provid-
er-consumer model.
Several communication channels are used for the data exchange between IO controller
and IO devices. The cyclic IO data and the event-driven alarms are transferred via real-
time channels. The standard channel based on UDP/IP is used for parameterization,
configuration and diagnostic information.
Unit model
The existing decentralized periphery of PROFIBUS DP has been enhanced for the de-
vice model. The device model is based on slot and subslot mechanisms where modular
devices with slots can be implemented for modules and submodules. In this way, the
slot and submodules are represented by subslots for the modules. These mechanisms
also enable logical modularization, e.g. for a drive system (
→
following figure).
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Summary of Contents for DFE32B PROFINET IO
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