Creating and configuring placeholders for I/O devices

A device placeholder is a DeltaV object that enables configuration of supported devices independent of a parent I/O node or I/O channel. You can create placeholders for I/O devices in I/O Studio and in DeltaV Explorer.

In I/O Studio, you can create a single device placeholder or multiple device placeholders. Click New on the I/O Tools menu and select Device, SIS Device, Create Device(s) from Master, or Create Multiple Devices from File.

Alternatively, you can convert unassigned I/O references into I/O device placeholders in I/O Studio by performing the following steps:

1. Click the View tab.
2. Select Unassigned I/O References List.
3. Select one or more references in the list that appears.
4. Click the Tools tab.
5. Select Configure as a Device.

When a new device placeholder is created, it is unallocated, which means that its Connection Path property is not bound to an I/O node. A device placeholder enables you to configure the following aspects of a device before the placeholder is allocated to an I/O Node:

• Device Definition--A set of properties that define a physical device without reference to the I/O layout.
• General Properties--A set of properties including Name, CHARM Description (if applicable), HART Description (if applicable), and Cabling ID.
• I/O Configuration--A set of channel properties including underrange and overrange limits.
• HART Device Alerts
• Automated Loop Test Configuration
• Supplementary Information--Supplementary information may include a typical wiring diagram.