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The block mode calculation of actual mode considers the input parameter status
attributes, input values, and resource state as represented graphically in the figure below.
Remote Cascade
Remote Out
Back Calculation Input
Block Specific Inputs
REFERENCE - INTERNAL
Please refer to Mode Change Conditions in Appendix D for list of conditions,
which will change the mode in order of priority with Good (Non-Cascade)
status on input parameter as the lowest priority.
Access control through GRANT_DENY parameter
Every fieldbus function block includes a GRANT_DENY parameter. It allows users to
Grant and Deny access permission to groups of function block parameters by other
devices. The following table summarizes the attributes for the Grant and Deny elements
of the parameter.
Element and Bit
R400
Experion PKS Series A Fieldbus Interface Module User's Guide
July 2010
Determine
Host Timeout
Shed Option
Cascade
Primary Input
Resource State
Figure 11 Block mode calculation summary
Attribute
Honeywell
3. Fieldbus Integration With Experion System
3.3. Control Mode Interaction
Target Mode
Actual and Target
Mode Calculation
Description
Mode
Actual Mode
and Target
63
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