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Glossary
©
National Instruments Corporation
G-9
NI-FBUS Hardware and Software User Manual
Program
A set of instructions the computer can follow, usually in a binary file
format, such as a
.exe
file.
Publisher
A device that has at least one function block with its output value
connected to the input of another device.
R
Repeater
Boost the signals to and from the further link.
Resource block
A special block containing parameters that describe the operation
of the device and general characteristics of a device, such as
manufacturer and device name. Only one resource block per device
is allowed.
Roundcard
A hardware interface for developing F
OUNDATION
™
Fieldbus-compliant devices.
S
s
Seconds.
Sample type
Specifies how trends are sampled on a device, whether by averaging
data or by instantaneous sampling.
Segment
See
Sensor
A device that responds to a physical stimulus (heat, light, sound,
pressure, motion, flow, and so on), and produces a corresponding
electrical signal.
Server
Device that receives a message request.
Service
Services allow user applications to send messages to each other
across the Fieldbus using a standard set of message formats.
Session
A communication path between an application and the NI-FBUS
Communications Manager.
Shield
Metal grounded cover used to protect a wire, component or piece of
equipment from stray magnetic and/or electric fields.
Signal
An extension of the IEEE 488.2 standard that defines a standard
programming command set and syntax for device-specific
operations.