I/O terminations are wiring equipment items that are used to connect I/O cards and other wiring items that do not have built-in termination blocks. You associate an I/O termination with an I/O card that does not have a built-in termination block and then make the required connections to the I/O termination. You can also associate an I/O termination with several I/O cards if there are redundant I/O cards.
Also, you can create an I/O termination when you need to define a distant I/O card that resides in a different panel or rack. You need to create a terminal strip with channels under an I/O termination to be able to effect I/O assignment and make connections.
You can create new I/O termination cards either in the Domain Explorer or the Reference Explorer. If you are creating an item that is going to have a frequently used configuration, we recommend that you create it in the Reference Explorer. Reference items facilitate fast creation of plant items by copying an existing item from the Reference Explorer to the Domain Explorer. However, if you want to create an I/O termination that does not have a configuration that you intend to use frequently, we recommend that you create it in the Domain Explorer and in the <unit> where it is to be physically located. This is helpful when filtering the wiring equipment items in the current <unit>.
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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 and navigate to a wiring item under which you want to create a new I/O termination.
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Expand the Panels by Location folder and navigate to a wiring item under which you want to create a new I/O termination.
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Double-click a panel and then a rack until you see the existing slots.
As a rule, I/O terminations reside in DCS panels or marshaling racks. However, Smart Instrumentation allows to create flexible wiring hierarchies and therefore you can add I/O terminations
to a number of various item types. To see examples of possible wiring hierarchy structures,
see Wiring Items Hierarchy Examples.
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Right-click a slot or any other wiring item under which you want the new card reside and then select New > Wiring Equipment.
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In the New Wiring Equipment dialog, from the Category list, select I/O Termination.
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Under Name, type the name of the new I/O termination and select OK.
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In the Wiring Equipment Properties – I/O Termination dialog, on the General tab, do one of the following to define the name of the new card:
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Select the Apply naming convention check box selected if you want the software to name the new card automatically according to the naming conventions that are set for this type of equipment in the Administration module. For more information, see Naming Conventions in the Administration Module help.
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Clear the Apply naming convention check box and under Name, type the name of the new card. Note that if you do not clear the Apply naming convention check box, the software will ignore the name that you type under Name.
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Select the Double width check box if the card occupies a double width slot.
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In the Details group box do the following as you require:
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Type a description.
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Select an I/O termination type, model, and manufacturer. If the required value is not available on the list, select
to define a new one.
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Enter a sequence if you need to define the sequence of the new I/O termination in its parent item. This sequence also determines the order in which wiring items appear under their parent item in the Domain Explorer tree view.
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Select the Control System tab.
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From the I/O type list, select an I/O type to determine the actual function of the new I/O termination. For example, AI, AO, DI, DP, Fieldbus, Profibus, and so forth. You can add more values to this list in the I/O Type supporting table in the Instrument Index module.
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To associate the current I/O termination with an I/O card that does not have a built-in termination block, select the required options in the Primary I/O card group box.
The I/O card list contains only those I/O cards that have been created under a rack and a slot.
For more information, see Associate an I/O card with an I/O Termination.
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To define the current I/O termination as an I/O termination that serves two redundant I/O cards, do the following:
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Select the Define a redundant I/O card check box.
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Select the required options in the Secondary I/O card group box.
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Select the Category Properties tab.
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Revise and modify category property values as you require. Select the value for each property and modify it as needed.
I/O termination is a wiring equipment category that is shipped with Smart Instrumentation. You cannot delete or rename any of the wiring equipment categories that have been
shipped with the software. Nor can you delete or rename the properties of the shipped
categories. However, when editing I/O termination properties, you can add user-defined
properties which you can rename or delete as you want. For details, see Customize and Use Wiring Equipment Categories.
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Select the Associate Symbols tab to associate a symbol with the current I/O termination. The software will use this symbol when generating a report in the Enhanced Report Utility. For details, see Associate a Symbol with an Item.
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Select OK to accept your settings and close the dialog.