Emerson E2 Set Up Applications, Example Setting Up an Outdoor Temperature Sen- sor

PRIMARY SECONDARY

P		S
P		P
P	P	P

PRIMARY USED AS GLOBAL

OUTSIDE AIR TEMP BY ALL E2s

PRIMARY		SECONDARY
P		S
S		S
S	S	S

SECONDARY SENSOR USED AS OUTSIDE

AIR TEMP WHEN PRIMARY FAILS

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Figure 10-45- Global Data Priority Example

Just as there may be only one primary provider for each input type, there may be only one secondary for each input type. It is recommended that secondaries be set up on different E2s than primaries; this way, if a single controller fails or loses communication with the other E2s, there will still be a usable input source for the other E2s.

User This setting means the E2’s global data will read (or be a “User” of) all values coming from the network. This setting is for E2s that are not con- nected to the sensor itself, but read the data that comes from it.

If the application in this E2 will be using primary or secondary inputs from other E2s, then set the priority to “USER.”

Local Only This setting specifies that the input to the global data is read and sent only to within the E2 you are programming. Also, this means that this E2 will not read any Primary or Secondary providers from the network.

If using this priority setting, you must enter board and point settings.

Example: Setting Up an Outdoor Temperature Sen- sor

1.Press (Global Data) and the Status screen opens.

2.Move the cursor to the Outdoor Air Temperature (OAT) Mode, and then choose the priority by scrolling with the ,keys.

3.Press the down arrow button once to the Board and Point section and enter the board and point locations for the sensor.

4.Press  (BACK) to return to the Main Status (Home) screen.

The Outdoor Air Temperature sensor is now set up as a global device in the E2. Other global inputs can be set up using the same method as above.

E2 is now ready to be programmed with applications.

10.18 Set Up Applications

From the Main Status (Home) screen, place the cursor on the application you wish to view and press 

(SETUP). You can also press and select (Setup)

from the Actions Menu to open the Setup screen for your selected application.

Set Up Applications Quick Start • 10-25