GE Industrial Solutions Control System Toolbox For Configuring the Trend Recorder - Manual (Page 39)

GEH-6408A Trend Recorder Glossary of Terms
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Glossary of Terms
AcDcEx
Refers to ac drives (AC2000), dc drives (DC2000), and exciters (EX2000) devices,
which are all referenced in the combined device type name. These three devices can
use the same application control boards and devices in the toolbox.
automatically named signals
Signals that are created as a result of inserting some item of blockware other than a
Signal Definition. One or more regions of such signals is of the form }00123.
bit
Binary Digit. The smallest unit of memory. It can be used to store only one piece of
information that has two states, such as One/Zero, On/Off, Good/Bad, or Yes/No.
Data that requires more than two states, such as numerical values of 000 to 999,
requires multiple bits (see Word).
block
A unit of information that is processed or transferred. These elemental units exist in
the runtime. The toolbox receives a description of the blocks from the block libraries.
blockware
Software that is composed of blocks. (See block.)
board
Printed wiring board.
Boolean
Digital statement that expresses a condition that is either True or False. In the
toolbox, it is a data type for logical signals.