Technical Specifications

ValVueFF Software Interface to FVP
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GE Energy
Link Master (LM) A Link Master (LM) is any device containing Link Active Sched-
uler (LAS) functionality that can control communications on an H1
fieldbus Link. There must be at least one LM on an H1 Link one of
those LM devices is elected to serve as LAS.
Link Object A Link Object contains information to link Function Block (FB)
Input/Output (I/O) parameters in the same device and between
different devices. The Link Object links directly to a Virtual Com-
munications Relationship (VCR).
Links Linkages Foundation fieldbus creates a link between two function
blocks to manage the scheduled communication of data between
them for control. The link information is stored in a Link Object.
LO Local Override mode
MAN Manual mode
MIB Management Information Base
Multidrop A variation of the HART Communications Protocol which allows
many smart field devices to draw power from, and to communi-
cate over a single pair of wires. Though most suited to multiple
measurement devices, it can be used with FVP to permit digital
communication of set point as well as configuration data, to multi-
ple positioners or a combination of positioners and measurement
transmitters. Such communication may not be fast enough for
flow control.
NAMUR NAMUR is a European user association of process control tech-
nology in chemical and pharmaceutical industries. "Recommen-
dations and Worksheets are experience reports and working
documents prepared by NAMUR for its members among process
control users for facultative utilization". NAMUR issued a recom-
mended accessory mounting for control valves (NE 14 Anschluß
von Schwenkantrieben an Armaturen 06.08.96) which describes
a method for mounting a positioner on an actuator. See more at
www.namur.de
Network Management
(NM)
Network Management (NM) permits FOUNDATION Network
Manager (NMgr) entities to conduct management operations over
the network using Network Management Agents (NMAs). Each
Network Management Agent (NMA) is responsible for managing
the communi cations within a device. The NMgr and NMA com-
municate through use of the Fieldbus Messaging Specification
(FMS) and Virtual Communications Relationship (VCR).
Non-Volatile Memory Computer memory which is not lost when power is turned off.
Used to permanently store calibration, configuration and diagnos-
tic information in FVP.
Normal State The normal set of target modes for the function blocks