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5. Configuration
5.3. Free VCR Recommendation
R400
Experion PKS Series A Fieldbus Interface Module User's Guide
119
July 2010
Honeywell
F
OUNDATION
Fieldbus and the Experion configuration and support
role for
F
OUNDATION
Fieldbus should use non-Experion interfaces
with devices in an Experion system.
Never
connect
non-Experion interfaces
while commissioning
devices and/or loading (or reloading) Control Modules containing
Fieldbus function blocks.
Never make
any parameter changes without the
knowledge
and
cooperation
of
plant/mill operations personnel
.
Never use
non-Experion interfaces to
load
or
commission
devices.
Always
connect
non-Experion Interfaces to the network as
visitor
only
at
one of
these four
addresses: 252, 253, 254, or 255
.
Always connect
non-Experion Interface to the network as
Basic
Device
Type.
Never connect
as
Link Master
Type.
You can use any spare connection terminal on the bus to connect
non-Experion interfaces; but you
must
make sure that the
connection is secure or it could disrupt link communications.
Carefully consider
the need for using a non-Experion interface in
the field, since most of them are very
SLOW
in comparison to
Experion operations.
Be aware
that non-Experion interfaces can use significant
bandwidth that could affect Experion performance.
Always
remove
non-Experion interfaces from the network when
their intended task is completed.
5.3 Free VCR Recommendation
We recommend that you leave at least
one
VCR free during configuration so that device
replacement will not require you to free a VCR first. Each Fieldbus segment requires at
least one free VCR to support reloading or replacing a device on the segment. If you
configure each segment with the maximum number of VCRs allowed, 64 per segment for
Series A FIM, you will need to free a VCR before you can complete a device
replacement on the given segment. Typically, you can free a VCR by deleting a Control
Module or device from the Monitoring tab in Control Builder. Control Builder displays a
Warning message when a segment is low on free VCRs.
Summary of Contents for Experion PKS Series A
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