Emerson Fisher FIELDVUE DVC6000f, Инструкция по эксплуатации, Страница: 215 / 384

DO Function Block
December 2009 4-155
Table 4-71. Discrete Output Function Block Parameter Definitions (Continued)
Label
PARAMETER_NAME
Description Initial Value Range Mode
RO /
RW
Index
Number
Process Value State
PV_STATE
11 ALL 0
Data Type: Uint16
Index to the text describing the states of a discrete
output.
Transducer State
XD_STATE
12 ALL 0
Data Type: Uint16
Index to the text describing the states of a discrete
for the value obtained from the transducer.
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:0=N/A, 1=granted
DENY: 0=N/A, 1=denied
GRANT 13.1 N/A
0: Program
1: Tune
2: Alarm
3: Local
All bits: 0
DENY 13.2 N/A All bits: 0
I/O Options
IO_OPTS
14 OOS
Valid Bits
0: Invert
1: SP tracks PV in Man
3: SP tracks PV in LO
4: SP Track retained
target in Man or LO
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
0=Disable
1=Enable
Allows you to select the type of tracking and the
output value when a fault condition occurs.
Supported I/O options for the DO function block
are SP Tracks PV in Man, SP Tracks PV in LO,
SP Tracks Retained Target in Man or LO, Fault
State to Value, Use Fault state on Restart, Target
to Man if Fault State Activated, and Use PV for
BKCAL_OUT.
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 Discrete
READBACK_D
16 RO N/A Dynamic
Data Type: DS-66
0=closed, 1=open, 5, 10, 15, 30...etc. are position
in 5% increments.
Cascade Input Discrete
CAS_IN_D
17 ALL
Status
BAD:
NC:
const
Data Type: DS-66
The remote set point value from another block.
Value 0
DO Channel
CHANNEL
18 OOS
0=undefined
22=Setpoint (D) 22=
Setpoint (D)
Data Type: Unsigned16
Defines which transducer parameter receives the
DO output. Select Setpoint (D) to control valve
position.
Fault State Time
FSTATE_TIME
19 ALL Positive 0
Data Type: Float
Time from detection of a fault in the remote set
point to the Fault State output action.
Fault State Value Discrete
FSTATE_VAL_D
20 ALL 0
Date Type: Unsigned8
Preset discrete SP_D value to use if I/O_OPTS
Fault State to Value is set.
Back Calculation Output Discrete
BKCAL_OUT_D
21 RO N/A Dynamic
Data Type: DS-66
The value and status required by the
BKCAL_IN_D input of another block for output
tracking
Remote Cascade Input Discrete
RCAS_IN_D
22 ALL
Status
BAD:
NoCom:
NoVal:
const
Date Type: DS-66
Target set point and status provided by a
supervisory host to a discrete control or output
block.
Value 0
−
Continued
−
4