The I/O assignment in Smart Instrumentation enables you to assign a channel to a specific instrument or a fieldbus segment.
I/O assignment for an instrument is performed in two stages:
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Associating (coupling) an instrument with a control system tag.
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Assigning the coupled pair to a channel.
I/O assignment for a segment is also performed in two stages:
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Associating (coupling) each virtual tag with a control system tag.
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Assigning the coupled pairs to an I/O channel.
The software displays the available instruments according to the current I/O type.
You can change the I/O type by setting the appropriate I/O assignment preference. For details, see Set I/O Assignment Instrument Tag Preferences.