I/O terminations function as termination blocks for I/O cards that do not have built-in termination blocks. Therefore, you need to associate an I/O termination with an I/O card that needs a built-in termination block. You can associate only those I/O cards that have been created in a particular rack and slot.
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In a redundant system configuration, an I/O card can function as a primary or secondary I/O card and can be associated with several I/O terminations. Therefore, an I/O termination can serve multi-paired redundant I/O cards. However, in these redundant I/O card configurations, the I/O termination can be associated only with one pair of primary and secondary I/O cards. Also, an I/O card cannot function as both a primary and secondary I/O card for the same I/O termination.
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If an I/O card functions as a primary I/O card, the Control System tab of the Wiring Equipment Properties – I/O Card dialog displays the secondary I/O card data and the primary I/O card data properties remain blank. If an I/O card functions as a secondary I/O card, the Control System tab displays the primary I/O card data and the secondary I/O card data properties remain blank.
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Press F7 to open the Domain Explorer, or press F8 to open the Reference Explorer and expand the Panels folder.
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In the Domain Explorer, do one of the following:
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Expand the Panels by Category folder, hierarchy and navigate to a wiring item under which you want to create a new I/O card.
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Expand the Panels by Location hierarchy and navigate to a wiring item under which you want to create a new I/O card.
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Create or select an I/O card under a particular panel, rack, and slot.
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Create or select an I/O termination that you want to associate with an I/O card.
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In the Wiring Equipment Properties – I/O Termination dialog, select the Control System tab.
To open the Wiring Equipment Properties – I/O Termination dialog, in the Domain Explorer, right-click an I/O termination and then select Properties.
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To associate a primary I/O card, in the Primary I/O card group box, select next to the I/O card select list arrow.
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In the Domain Explorer, select an appropriate I/O card and select OK.
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You cannot select an I/O card whose child item is a terminal strip with channels.
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Note that the I/O type of both the I/O card and the I/O termination must be the same. If the I/O type of the I/O termination differs from the I/O type of the I/O card, the software displays a warning.
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To associate a secondary I/O card, do the following:
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Select the Define a redundant I/O card check box.
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In the Secondary I/O card group box, select next to the I/O card select list arrow.
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Select OK.
To be able to effect I/O assignment and make connections, create a terminal strip with channels under the I/O termination you are editing.