Chapter 3
Hardware and Software Configuration
©
National Instruments Corporation
3-23
The locator is read as channel 0 (00) of the analog input module in position
one (the first position to the right of the network module) on the bank.
Note
If you are making only one connection to the FP-20
xx
, the Lookout protocol
performs better than OPC or DSTP (DataSocket Transfer Protocol).
Publish Data VI
You can use the Publish Data VI on the FieldPoint palette to create items
and groups that are published using the National Instruments Ethernet
(Lookout) protocol. A host computer or FP-20
xx
can link to these items
using DataSocket or using the native connection capabilities of Lookout
or the LabVIEW DSC module. The Publish Data VI creates data that other
VIs and applications can browse and read, write, or read/write from the
FP-20
xx
. These items will also be accessible in FieldPoint Explorer and the
FieldPoint OPC server.
Serial VIs
You can use the LabVIEW Serial VIs to communicate with other serial
devices through the RS-232 port on the FP-20
xx
. For example, you can use
the supplied FieldPoint Optomux library to communicate with an FP-1000
connected to the FP-20
xx
. Refer to the
FP-1000/1001 Programmer
Reference Manual
for more information about the Optomux VIs.
Note
The FP-20
xx
does not support VISA.
TCP and UDP VIs
You can use the LabVIEW TCP VIs to publish data from the FP-20
xx
to
computers or devices on the network using TCP-based protocols. You can
use the LabVIEW UDP VIs to publish data from the FP-20
xx
to computers
on the network using UDP (User Datagram Protocol).
Note
The TCP and UDP VIs provide low-level access to your network. Use them only
when the supplied protocols do not fit into your application.