Omron PROFINET NX-PNC202, User Manual

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1 PROFINET IO Technology
NX-series PROFINET Coupler Unit User’s Manual (W623)
1-2 PROFINET Distributed IO
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Provider/Consumer Model
The data exchange between IO Controller and the IO Devices is carried out based on the provider-con-
sumer model. The provider sends its data to the consumer without a request from the other device. The
consumer processes the data. The provider (as the consumer) is either the IO Controller or the IO
Device.
The Input Output Provider Status (IOPS) indicates the status of the data source (valid or invalid) for
each of the modules as part of the data exchange message. This can be the Output data for the IO
Controller and the Input data for the IO Device. The provider status is either bad or good, implying the
received data is either invalid or valid for use. For example the Output data of the IO Controller is set to
bad in case the PLC is in Program mode.
The Input Output Consumer Status (IOCR) indicates the feedback on the provided data received
before. This status (Bad or Good) is indicated in the Input data for the IO Controller and the Output data
for the IO Device.
Number Description
1 Communication Unit
2 IO Module
3 Submodule
4 Channel
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2 2 2
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4
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3
4
4
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