Rockwell Automation 1788-FFCT NI-FBUS Configurator User Manual - Manual (Page 77)

1 Publication 1788-UM052B-EN-P - April 2002
Glossary
We use these abbreviations, acronmys, and initialisms throughout the
document.
Term Definition
AI Analog Input
AO Analog Output
basic device a device that can communicate on the fieldbus, but cannot
become the LAS
BG Bias Gain
block A logical software unit that makes up one named copy of a block
and the associated parameters its block type specifies. The values
of the parameters persist from one invocation of the block to the
next. It can be a resource block, transducer block, or function block
residing within a VFD.
block tag a character string name that uniquely identifies a block on a
fieldbus network
bridge an interface in a fieldbus network between two different
protocols
contained parameter a parameter that does not receive or send data, and is contained
within a function block
control loop a set of connections between blocks used to perform a control
algorithm
control strategy see function block application
CS Control Selector
DCS Distributed Control System
DD Device Description
deterministic communication in which data is transferred between a given set
of
communication devices at the same time during each loop
device ID An identifier for a device that the manufacturer assigns. Device
IDs must be unique to the device; no two devices can have the
same device ID.
device tag a name you assign to a fieldbus device
DI Discrete Input
DO Discrete Output
FBAP see function block application
fieldbus an all-digital, two-way communication system that connects
control systems to instrumentation
Fieldbus Foundation the organization that developed a fieldbus network specifically
based upon the work and principles of the ISA/IEC standards
committees
F OUNDATION Fieldbus the communications network that the Fieldbus Foundation created