Honeywell Series A - 17. Appendix H; 17.1 Important Functional Considerations; General

R400 Experion PKS Series A Fieldbus Interface Module User's Guide 533
July 2010 Honeywell
17. Appendix H
17.1 Important Functional Considerations
The following tables lists some functional considerations to keep in mind when
integrating fieldbus with an Experion system.
General
Function Indication Consideration
Fieldbus device with
previous address
assignment is added
to a Link. .
Potential to lose Link
Schedule, if FIM fails
before "uncommissioned"
device is "commissioned".
Always remove the address from a
used fieldbus device before you store
it.
Adding Link Master
capable device to
operating Link.
Potential for LM capable
device to assume LAS role
using empty or incorrect
Link Schedule.
See the Guidelines for adding fieldbus
device to "live"/operating Link in the
Maintenance, Checkout, and
Calibration section of this document.
Link Slot Time setting
is 8 or less.
A new uncommissioned
device may not appear in
the Link directory in the
Monitoring tab.
Change the default Slot Time setting to
10 on the Link Block Parameters form
in Control Builder.
(If an uncommissioned device does not
appear, try increasing the Slot Time
value by one and cycling power to the
FIM. Repeat this action, as required.)
Using automatic
inactivate/activate
function in Load
Dialog box in Control
Builder
A component is
automatically inactivated
during the load and then
returned to its active state.
Do not use this automatic
inactivate/activate function, if your
process cannot tolerate the load
disruption and consequent delay in
activation.
Fieldbus device
designated as
"backup" Link Master
cannot handle the
Link Schedule. (Also,
see the next row.)
Device icon turns yellow
(LM without schedule) or
red (bad communications).
The FIM is the primary Link Master for
both Links. If you designate a device
as a "backup" Link Master, be sure it
has the capacity to handle the Link
Schedule. Otherwise, you may have to
reconfigure the device as a Basic type
and restart it to initiate the change, if
the Link Schedule is too large for it to
handle.