National Instruments FP-3000 - Manual (Page 140)

Glossary
FieldPoint FP-3000 User Manual Glossary-8 www.ni.com
Process variable A common Fieldbus function block parameter representing some
value in the process being controlled.
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.
PV Process Variable.
R
RA Ratio.
Repeater Boost the signals to and from the further link.
Resistor Component made of material that opposes flow of current and
therefore has some value of resistance.
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.
S
s Seconds.
Scheduled communications Communication that occurs at the same time during each control
cycle.
Segment See Link.
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.