Emerson E2 Using the Input Definitions/ Status Screen, Setting Up Analog Inputs, Application

ital, or press  to cancel setup.

Figure 9-5- Data Type Pop-Up Menu

Depending upon what type of input you selected, the Analog Input or the Digital Input screen will appear. The analog screen is described in Section 9.1.3.3, while the digital screen is described in Section 9.1.3.4.

9.1.3.2Using the Input Definitions/ Status Screen

In order for the E2 to properly read an input value from a sensor or transducer hooked to an I/O board, you must first tell the E2 what kinds of devices are hooked into each input board point. This is achieved by using the Input Definitions/Status screen.  (SETUP),  (DEL/ MOD),  (OFFSET),  (LOOK UP), and  (CANCEL) are the function keys along the bottom of the screen available for the Input Definitions/Status screen.

Each record in this screen contains the following infor- mation about a point:

1.Type (read-only)

The Type column will read 16AI regardless of whether the input board is a 16AI, MultiFlex 16, 8IO, or MultiFlex Combination I/O board.

NOTE: When setting up 88s and 8AOs, re- member that there are only eight usable input points, even though the 16AI that represents

the 88s and 8AOs in the summary screen has sixteen points. Only inputs one through eight (1-8) may be de- fined; all other points will be ignored.

This is also true of 168DOs and 1616DOs. The Multi- Flex 168DO’s and 1616DO’s digital output’s position appears as an 8DO, but only the first four outputs are usable.

2.Board (read-only)

The point’s board number will appear in its point record under the Board column. All input boards on a controller will be displayed.

3.Point (read-only)

The point number of each point appears in its record under the Point column.

4.Type (read-only)

The Type field shows the output’s data type. Possible Types are: A (Analog) or D (Digital). If the point has not been identified, a “-” will appear in the field instead.

5. Application

Select which application you wish to set up inputs to. Pressing  (LOOK UP) when on a defined point will open the Application Selection menu--a list of application types currently existing in the box.  (CANCEL) will cancel this menu.

6. Association

If a point has already been defined and is currently being used by an application, the name of the input to which the point is connected will be displayed in the Asso- ciation field.

Association is the application’s user-defined property that is associated with the point. Multiple applications attached to single input will all be displayed in the Associ- ation field. Pressing  (LOOK UP) on a set applica- tion will bring up a list of property selections.  (CANCEL) will cancel this menu.

7.Value (read-only)

Value shows the sensor value in the units you select for the input type.

NOTE: When changes are made to the Appli- cation or Association fields, data will not be saved until attempting to arrow off of that par-

ticular board and point or attempting to leave the screen. If Type has changed, data will be saved and then the controller will take you to the Setup In screen.

9.1.3.3Setting Up Analog Inputs

Open the Analog Input screen by selecting an Analog (A) input from the Input Status screen Figure 9-4and pressing  (SETUP).

The Analog Input screen Figure 9-4is where sensor types, units, and default values are specified for analog input points.

The 16AI, 8IO, and MultiFlex Inputs Input and Output Setup • 9-7