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Glossary
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National Instruments Corporation
G-3
Fieldbus Data Link
layer
The second lowest layer of the fieldbus communications stack.
Fieldbus Messaging
Specification layer
The layer of the communication stack that defines a model for applications
to interact over the fieldbus. The services FMS provides allow you to
read and write information about the OD, read and write the data
variables described in the OD, and perform other activities such as
uploading/downloading data, and invoking programs inside a device.
filter
A software screening device you configure to make the NI-FBUS Monitor
capture only certain types of data that move across the fieldbus.
Filter window
A window inside the main window of the NI-FBUS Monitor that shows
captured data with selected data filtered out.
FMS
See
Fieldbus Messaging Specification layer.
H
hex
Hexadecimal.
Hz
Hertz.
I
I/O
Input/output.
IRQ
Interrupt request.
ISA
Industry Standard Architecture..
L
layer
See
.
M
MDI
See
Multiple Document
Interface
A software interface that contains many smaller windows open
concurrently that display data from different sources.