Emerson E2 operation manual Setting Up Digital Outputs

purpose. It is both an at-a-glance summary of all points on each output board and a menu where output points may be selected and configured.

In order for the E2 to properly control devices that are hooked to an I/O board, you must first tell the E2 what type of output the devices require. This is achieved by using the Output Definitions/Status screen.

(SETUP),  (DEL/MOD),  (LOOK UP), and (CANCEL) are the function keys along the bottom of the screen available for the Output Definitions/ Status screen.

The Output Definitions/Status screen serves a dual

purpose. It is both an at-a-glance summary of all points on each output board and a menu where output points may be selected and configured.

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

1.Board Type (read-only)

Board Type shows which kind of output board the point is on. The Board Type field will read either 8RO, 8DO, or 4AO for I/O Network 16AI boards, E16AI, and 8ROE for Echelon Network 16AIe boards.

The last character of the Board Type field also shows what type of input the point is defined as. If a point has already been defined as an analog or digital input, this field will signify its input type with an “A” (for analog) or “D” (for digital).

2.Brd (read-only)

The point’s board number appears under the Brd field.

3.Pt (read-only)

The point number of each point appears in its record in the Pt field.

4.Type (read-only)

The Type field shows the output’s data type. Possible Types are: A (Analog), D (Digital), O (One Shot), or P (Pulse). If the point has not been identified, a “-” will appear at the end of 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) when on a set application 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 output type.

9.2.6.3Setting Up Digital Outputs

Open the Digital Output screen by selecting a Digital (D) input from the Output Status screen Figure 9-9and pressing  (SETUP).

Digital Outputs are ON when the E2 calls for them to be ON, and OFF whenever the E2 calls for them to be OFF. Most outputs that directly activate and deactivate output devices will need to be set up as the Digital output type.

Figure 9-11- Digital Output Screen

Point Name The Point Name is simply a name for the output point that may be used as a reference.

Assigning a descriptive name to a point makes set- ting up outputs for applications much easier. For example, if you are setting up condenser fan #3 for condenser #2, you may choose to name it “CND #2 FAN #3”. Then, when programming your Condenser Control application, you may easily define the fan output by tying it to CND #2 FAN #3. This keeps you from having to keep track of which contacts are tied to which point numbers.

You are required to enter a point name in the Point Name field. The default name is “:{BOARD NAME}:{SUBNET NUMBER}:{BOARD NUM- BER}:{POINT NUMBER}”.

9-12 • E2 RX/BX/CX I&O Manual 026-1610 Rev 13 14-SEP-2011