Table 8.7 ao function block parameter list – Flowserve 3400IQ Digital Positioner User Manual
Page 55
Logix 3400IQ Digital Positioner FCD LGENIM3402-00 – 0/07
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Table 8.7 AO Function Block Parameter List
Block
Index
Name
Store
Type
Data Type
(Units)
Valid
Range
Write Restrictions
Default Value
31
READBACK_
OUT
D
ANALOG (PV)
Read Only
33
BLOCK_TEST*
D
Array of
Unsigned8
Read Only
All zeros
* Extension parameter
AO Block Diagram
Figure 8.3 is a block diagram showing the key components of the AO function block.
AO Block Diagram
Figure 8.3 AO Function Block Diagram
Transducer Block 1
Transducer Block 2
OUT
Convert
PV SCALE
MODE
Select
SP RATE UP
ACTUAL
TARGET
PERMITED
PV
CAS IN
RCAS IN
Setpoint
Limiting
SP RATE DN
SP HI LIM
SP LO LIM
SP
(Read)
XD SCALE
FaultState
Check
FSTATE TIME
FSTATE_VAL
BKCAL OUT
RCAS OUT
SIMULATE: TRANSDUCER
SIMULATE
ENABLE
READBACK
PV
Convert
U
SE PV
FOR BKCAL
BLOCK ALM
SHED OPT
UPDATE EVT
STATUS OPTS
AUTO
RCAS
F
ROM
O
UT
C
ONVERT
LO
AUTO
MAN
FaultState to Value
Rate
Limiting
Last SP
FSTATE
VALUE
MAN
LO
SP
(Write)
Setpoint
Tracking
PV
TARGET
ACTUAL
WSP
Status
Calculation
Invert
Incr. to Close
fstate: Active
Time OUT
Timer
SHED RCAS
Targ to MAN on Bad IN
CHANNEL
Transducer Block n
SHED OPT
OUT
T
O
O
UT
P
ARAMETER
CAS
ACTUAL
ACTUAL
TARGET
ACTUAL
SP Track Ret. Tgt
SP PV Track in Man.
SP PV Track LO IMAN
RCAS timeout
RCAS timeout
RCAS timeout
CAS
RCAS
IMAN
RS Feature_Sel
Out_Readback On
READBACK_Out