Ethernet/Serial Interfaces for Compact FieldPoint

3

BUY ONLINE at ni.com or CALL (800) 813 3693 (U.S.)

Accessing Network I/O Data

on a cFP-180x Using Shared Variables

You can create a shared variable for any tag that is available on a

cFP-180x bank connected to the network. You then can use this shared

variable in multiple LabVIEW applications either targeted to Windows OS

or running embedded on a Compact FieldPoint real-time controller such as

the NI cFP-2120. To create a shared variable to be hosted on a Windows

system, simply right-click on My Computer in the LabVIEW Project and

select New Variable; select the option to bind this shared variable to a

source, and then you can either select IO from your local LabVIEW Project

or any I/O available on the network, as shown in Figure 7.

After you create a shared variable, it appears in LabVIEW Project

Manager and is available for use in your LabVIEW applications simply

by dragging the variable from the Project Explorer to an existing VI

(see Figure 8). From a PC, PAC, or embedded Compact FieldPoint controller,

you can use MAX with LabVIEW 8 to configure I/O settings for the

cFP-180x to access data on distributed Compact FieldPoint banks.

Accessing distributed I/O is now easier than ever with LabVIEW 8

and a cFP-180x.

Ordering Information

NI cFP-1808 ...........................................................................779463-01

NI cFP-1804 ...........................................................................779490-01

PS-5 (power supply 24 VDC, 5 A, universal power input) ......778805-90

BUY NOW!

For complete product specifications, pricing, and accessory

information, call (800) 813 3693 (U.S.) or go to ni.com/fieldpoint.

Figure 6. Drag and drop an I/O tag from a LabVIEW Project to any VI.

Figure 7. Compact FieldPoint distributed I/O channels are accessible as network items

from LabVIEW.

Figure 8. Use a shared variable to access distributed I/O for all channels.