3. Fieldbus Integration With Experion System
3.2. Control Integration
R400 Experion PKS Series A Fieldbus Interface Module User's Guide 53
July 2010 Honeywell
CM
CPM/CEE
FIM
Fieldbus
Device
FIM
Digital
Output
Transducer
Device
Control
OUT_D
DI[1]
DO[1]
BACKCALIN = Back Calculation Input
BKCAL_OUT_D = Back Calculation Output Discrete
CAS_IN_D = Cascade Input Discrete
CEE = Control Execution Environment
CM = Control Module
CPM = Control Processor Module
DIC
CAS_IN
CAS_IN_D
RCAS_IN
RCAS_IN_D
RCAS_OUT_D
BKCAL_OUT_D
PVFL
BACKCALIN
DIC = Digital Input Channel
FIM = Fieldbus Interface Module
OP = Output
PVFL = Process Variable Flag
RCAS_IN_D = Remote Cascade Input Discrete
RCAS_OUT_D = Remote Cascade Output Discrete
Figure 10 Integration of fieldbus device digital output signal with Control
Builder control strategy
Fieldbus Discrete Output data manipulation
Whe
n the DO[n] from the Device Control (DEVCTL) function block is wired to the
CAS_IN_D input for a fieldbus Discrete Output function block, the Control Builder
automatically creates a CEE output agent to handle the discrete output to the fieldbus
block. The block-like output agent maps the Control Builder DO[n] with status parameter