Glossary
G-6
©
National Instruments Corporation
item
A channel or variable in a real-world device that is monitored or controlled
by a BridgeVIEW device server.
L
LabVIEW
Laboratory Virtual Instrument Engineering Workbench. A program
development application used commonly for test and measurement
purposes.
log deadband
The range through which a tag value must change before it is logged to
Citadel.
log resolution
The smallest change in a tag value stored in the historical database.
M
Man Machine
Interface (MMI)
See Human Machine Interface (HMI).
MB
Megabytes of memory.
memory tag
A tag not connected to a real-world I/O point. Memory tags are used for
user-defined calculations. See also tag and network tag.
N
network tag
A tag remotely connected to any type of tag on another BridgeVIEW
Engine. See also tag and memory tag.
O
object
Generic term for any item on the front panel or block diagram, including
controls, nodes, wires, and imported pictures.
OPC
OLE for Process Control. A COM-based standard defined by the OPC
foundation that specifies how to interact with device servers. COM is a
Microsoft 32-bit Windows technology.
operating tool
Tool used to enter data into controls as well as operate them. Resembles a
pointing finger.
