3. Fieldbus Integration With Experion System
3.8. Block Instantiation Support
86 Experion PKS Series A Fieldbus Interface Module User's Guide R400
Honeywell July 2010
If Network Activity Is . . . Then, Behavior During Switchover Is . . .
(MIB) connection to a device, one Function Block
Application Process (FBAP) connection and
possibly one control connection.
Switchover events
Switcho
ver results in several Experion system events and alarms. All of them are system
information or diagnostics type. No process alarms are generated due to switchover.
Typical events generated during switchover include:
Connection failure to secondary module alarm
Switchover event
Chassis ID of primary and secondary events
Not synchronized alarm
Each of these events appears for every module in a chassis where switchover occurred.
3.8 Block Instantiation Support
About instantiable blocks
In addition to the permanent or fixed function blocks that manufacturer's define for their
F
OUNDATION Fieldbus (FF) devices, they can define optional instantiable function
blocks. This gives users the ability to instantiate (create) additional function blocks
within the Function Block Application Process for the given fieldbus device. The
Fieldbus Foundation refers to this function as Block Instantiation and they include it in
their Host Interoperability Support Test (HIST).
REFERENCE - INTERNAL
Please refer to Appendix A for more information about Fieldbus Technology
in general and the Standard Function Blocks
.
Control Builder supports block instantiation
ATTENTION
The Type function in Control Builder only supports Block Instantiation in
fieldbus devices with single Capability Levels. It does not support fieldbus
devices with multiple Capability Levels.
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