Emerson Fisher FIELDVUE DVC6000f, Инструкция по эксплуатации

Страница: 216 / 384

DVC6000f Digital Valve Controllers
December 2009 4-156
Table 4-71. Discrete Output Function Block Parameter Definitions (Continued)
Label
PARAMETER_NAME
Description Initial Value Range Mode
RO /
RW
Index
Number
Shed Options
SHED_OPT
23 ALL
0=Uninitialized
1=Normal Shed,
Normal Return
2=Normal Shed, No
Return
3=Shed to Auto, normal
return
4=Shed to Auto, no
return. Target mode
changes to Auto on
detection of a shed
condition
5=Shed to Manual,
normal return
6=Shed to Manual, No
return. Target mode
changes to MAN on
detection of a shed
condition.
7=Shed to retained
target, normal return
8=Shed to retained
target, no return.
(Change target to
retained target)
0
Data Type: Unsigned8
Defines action to be taken on remote control
device timeout.
Normal Return
−
actual mode changes to the next
lowest priority non-remote mode permitted but
returns to the target remote mode when the
remote computer completes the initialization
handshake.
No Return
−
Target mode changes to the next
lowest priority non-remote mode permitted. The
target remote mode is lost, so no return occurs.
Remote Cascade Output Discrete
RCAS_OUT_D
24 RO N/A Dynamic
Data Type: DS-66
Block set point and status after ramping, provided
to a supervisory host for back calculation and to
allow action to be taken under limiting conditions or
mode change.
Update Event
UPDATE_EVT
25
Data Type: DS-73
This alert is generated by any change to the static
data.
UNACKNOWLEDGED 25.1 RW N/A
0=Undefined
1=Acknowledged
2=Unacknowledged
0=Undefined
UPDATE_STATE 25.2 RO N/A
0=Undefined
1=Update reported
2=Update not reported
0=Undefined
TIME_STAMP 25.3 RO N/A 0
STATIC_REVISION 25.4 RO N/A 0
RELATIVE_INDEX 25.5 RO N/A 0
Block Alarm
BLOCK_ALM
26
Data Type: DS-72
The block alarm is used for all configuration,
hardware, connection failure, or system problems
in the block. The cause of the alert is entered in
the subcode field. The first alert to become active
will set the active status in the status parameter.
As soon as the Unreported status is cleared by the
alert reporting procedure, and other block alert
may be reported without clearing the Active status,
if the subcode has changed.
UNACKNOWLEDGED 26.1 RW N/A
0=Undefined
1=Acknowledged
2=Unacknowledged
0
ALARM_STATE 26.2 RO N/A
0=Undefined
1=Clear reported
2=Clear not reported
3=Active reported
4=Active not reported
0
TIME_STAMP 26.3 RO N/A 0
SUBCODE 26.4 RO N/A 0
VALUE 26.5 RO N/A 0
Extended Blocks
Setpoint Rate Up
SP_RATE_UP
27 > = 0 0
Data Type: Float
The ramp rate for SP up in AUTO, CAS, and
RCAS modes. Measured in PV units/sec.
Setpoint Rate Down
SP_RATE_DN
28 > = 0 0
Data Type: Float
The ramp rate for SP down in AUTO, CAS, and
RCAS modes. Measured in PV units/sec.
4