I/O assignment is essentially assigning a control system tag to a free channel. I/O assignment for an instrument is performed in two stages. First you associate (couple) an instrument with a control system tag and then assign the coupled pair to a channel.
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Press F7 to open the Domain Explorer.
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In the Domain Explorer, do one of the following:
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Select a parent wiring item that contains one or more I/O card child items and whose I/O type is Fieldbus FF.
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Select an I/O card or an I/O termination whose I/O type is Fieldbus FF.
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Right-click the selected items and then select Actions > I/O Assignment.
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The software allows you to open the I/O Assignment window without selecting anything in the Domain Explorer. On the Wiring Module window toolbar, select
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You can also open the I/O Assignment window for an I/O card from the Connection window. On the Connection menu, select I/O Assignment.
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On the I/O Assignment Type dialog, select I/O Assignment.
For fieldbus I/O assignment, select Segment I/O assignment. For details, see Configure a Fieldbus Apparatus.
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If you did not select a panel or an I/O card in the Domain Explorer before opening the I/O Assignment window, do one of the following in the I/O Assignment window:
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Select
to open the Find Channel dialog, where you find and select channels to display in the I/O Assignment window.
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In the I/O card details pane, select
beside the I/O termination list to open the Domain Explorer where you select the required I/O cards, then select OK to add them to the I/O card list.
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From the I/O termination list, select an item for which you want to effect I/O assignment.
The I/O type of the selected I/O card or I/O termination determines the I/O type
of the initial instrument tag displayed in the I/O type list. You can select a different I/O type from this list if required. The list of
instruments displayed in the Tag list data grid depends on the I/O type that you select from the I/O type list. If the I/O type selection is MIXED, instruments of all I/O types are shown. If any another I/O type is selected, only
the instruments of the selected I/O type are shown.
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If required, select a different I/O type, which enables you to use an instrument tag for the I/O assignment whose I/O type is different from the I/O card I/O type. To do this, do one of the following:
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If the I/O type selection is MIXED, select the required I/O type from the I/O type list.
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If the I/O type selection is not MIXED, change the definitions to make the I/O type list available at all times by selecting the All I/O types preference on the Preferences (Wiring – I/O Assignment) dialog. For details, see Set I/O Assignment Instrument Tag Preferences.
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Drag an instrument or a control system tag to a free channel in the Channel assignment pane to effect I/O assignment.
Several assignment options are possible. For details, see Assign an Instrument to a Channel.