Flowserve 3400IQ Digital Positioner - Manual (Page 8)

Logix 3400IQ Digital Positioner FCD LGENIM3402-00 – 0/07

Term Abbrev. Definition
Network Management NM
A set of objects and services that provide management of a
device’s communication system.
Network Management Agent NMA
Part of the device software that operates on network
management objects.
Network Management Information
Base
NMIB
A collection of objects and parameters comprising configura-
tion, performance and fault-related information for the
communication system of a device.
Objects
Entities, such as blocks, alert objects, trend objects,
parameters, display lists, etc.
Object Dictionary OD
Definitions and descriptions of network visible objects of
a device. Various object dictionaries are contained within a
device. The dictionaries contain objects and their associated
parameters which support the application in which they are
contained.
Parameters A value or variable which resides in block objects.
Proportional Integral Derivative
control
PID
A standard control algorithm. Also refers to a PID function
block.
System Management SM
Provides services that coordinate the operation of various
devices in a distributed fieldbus system.
System Management Agent SMA
Part of the device software that operates on system manage-
ment objects.
System Management Information
Base
SMIB
A collection of objects and parameters comprising configura-
tion and operational information used for control of system
management operations.
Status
A coded value that qualifies dynamic variables (parameters)
in function blocks This value is usually passed along with
the value from block to block. Fully defined in the FF FBAP
specifications.
Transducer Block XD
Similar to a function block, but performs functions specific
to the device transducer, including measurement and
calibration.
Virtual Communication Reference VCR
A defined communication end-point. Fieldbus commu-
nications can primarily only take place along a active
communications ‘path’ that consists of two VCR endpoints.
For example, to establish communications between a trans-
ducer AO block and another function block, a VCR must be
defined at the transducer block and a VCR must be defined at
the function block between the two function blocks.
Virtual Field Device VFD
A logical grouping of ‘user layer’ functions. Function blocks
are grouped into a VFD, and system and network manage-
ment are grouped into a VFD.