Chapter 5 Accessing cFP-20xx Channels from PC Applications
© National Instruments Corporation 5-5 cFP-20xx and cFP-BP-x User Manual
The I/O Module Folder part of a URL provides the sub-folder from which
you access all data items from a specific FieldPoint I/O module. The I/O
Module Folder part of a URL has the following format:
\\[
machine
]\FP\[
n
]
where[
n
] consists of the numeric address and name of the I/O module. The
address of the I/O module is an integer from 1 to 9, where 1 represents the
I/O module closest to the network module and 9 represents the I/O module
farthest from the network module. The folder
\\130.164.44.8\FP\1AI
indicates the I/O module closest to the network module, and the AI means
that it is an analog input module.
The Channel Data part of a URL provides the scaled data value of the input
or output value for a specific channel. The Channel Data part of a URL has
the following format:
\\[
machine
]\FP\[
n
]\[
channel
]
where [
channel
] is a two-digit decimal number between 00 and 15.
The following figure shows a DataSocket URL with Channel Data.
The locator is read as channel 0 (00) of the analog input module in Slot 1
(the slot closest to the controller) of the backplane.
Note If you are making only one connection to the cFP-20xx, 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 cFP-20xx 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
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