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System Management description
System Management provides the following functions to coordinate the operation of
various devices in a distributed fieldbus system.
Assigning node addresses for devices;
Synchronizing the application clock;
Distributing application scheduling across the link; and
Providing support for locating application tags.
It provides the needed facilities for bringing new devices on the link to an operational
state and for controlling the overall system operation. Information, which is used to
control system management operation, is organized as objects stored in the System
Management Information Base (SMIB).
About device objects
The device object represents a physical device entity connected to the fieldbus link. It
provides access to the device's Network Management (NM) and System Management
(SM) parameters. The client/server VCR is configured in the FIM to access the
Management Interface Base (MIB) of the device as soon as it joins the network. The
Control Builder does not configure the MIB VCR explicitly. Once the MIB VCR is
configured and opened, FIM retrieves MIB information, SM directory, and NM
directory. Knowledge of these directories allows FIM to transform writes into domain
object variables into proper sequence of domain download operations. The SM directory
is also used to determine the number of application VFDs. The NM directory is key in
attempting to configure VCRs to access Function Block Application Process VFDs in the
device.
About VFD objects
The Virtual Field Device object represents an application VFD and provides parameter
access to that VFD. Each physical device may have one or more application VFDs. The
FIM attempts to build a client/server VCR to every VFD in the device, when it is added
to the network. If the VCR configuration is successful, the FIM obtains VFD and
resource identification from the device's VFD. During device download, you can
overwrite VCR configuration used to access VFD parameters through the Control
Builder application.
R400
Experion PKS Series A Fieldbus Interface Module User's Guide
July 2010
3. Fieldbus Integration With Experion System
Honeywell
3.2. Control Integration
43
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