Emerson FIELDVUE DVC6200f, Instruction Manual

Page: 117 / 326

AO Function Block
November 2010 105
Table 4-25. Analog Output Function Block Parameter Definitions
Label
PARAMETER_NAME
Description
Initial
Value
Range
Block
Mode
RO /
RW
Index
Number
Simulate
SIMULATE
10
Data Type: DS-82
Allows the analog input to be manually supplied
when simulate is enabled. When simulation is
disabled, the simulate value and status track
actual value & status.
SIMULATE_STATUS 10.1 RW ALL 0
SIMULATE_VALUE 10.2 RW ALL 0
TRANSDUCER_STATUS 10.3 RO ALL 0
TRANSDUCER_VALUE 10.4 RO ALL 0
ENABLE/DISABLE 10.5 RW ALL
0: Not Initialized
1: Simulation Disable
2: Simulation Active
1: Simulation
Disabled
Process Value Scale
PV_SCALE
11 RW OOS
EU at 100%
EU at 0%
Units index
Decimal Point 100
0
%
2
Data Type: DS-68
The high and low scale values, engineering units
code, and number of decimal places to be used in
displaying the PV parameter and parameters
which have the same scaling as PV.
Transducer Scale
XD_SCALE
12 RO OOS
EU at 100%
EU at 0%
Units index
Decimal
Point
100 only
0 only
% only
2
Data Type: DS-68
The high and low scale values and engineering
units code are read only. This parameter
determines the number of digits to the right of the
decimal point used with the value obtained from
the transducer for a specified channel.
Grant Deny
GRANT_DENY
13
Data Type: DS-70
Options for controlling access of host computers
and local control panels to operating, tuning, and
alarm parameters of the block.
GRANT: 1 = granted, 0= N/A
DENY: 1 = denied, 0 = N/A
GRANT 13.1 RW ALL
0: Program
1: Tune
2: Alarm
3: Local
All bits: 0
DENY 13.2 RW ALL All bits: 0
I/O Options
IO_OPTS
14 OOS
1: SP tracks PV in
Man
3: SP tracks PV in LO
or Iman
4: SP Track retained
target in Man or LO
5: Increase to Close
6: Fault State to value
0=freeze
1=go to Fault State
value
7: Use Fault State
value on restart
8: Target to Man if
Fault State activated
9: Use PV for
BKCAL_OUT
0=SP
1=PV
All bits: 0
Data Type: Bit String (2 byte)
0=disable
1=enable
Allows you to select the type of tracking and the
output value when a fault condition occurs.
Status Options
STATUS_OPTS
15 OOS
4: Propagate Failure
Backward
All bits: 0
Data Type: Bit String
0=disable
1=enable
Options the user may select for the block
processing of status.
Readback
READBACK
16 RO N/A
Status
Data Type: DS-65
Readback is the de-characterized valve position
as reported by the transducer block parameter
FINAL_POSITION_VALUE [17]. This correlates
with the AO block parameter OUT [9], which is
the setpoint to the transducer. READBACK is the
simulated input if SIMULATE is enabled or the
transducer block feedback if SIMULATE is
disabled.
Value Dynamic
Cascade Input
CAS_IN
17 ALL
Status
BAD:
NC:
const
Data Type: DS-65
The setpoint value from another function block.
Value 0
−
Continued
−
4