Resource Block
December 2009
4-15
Table 4-3. Resource Block Parameter Definitions (Continued)
Label
PARAMETER_NAME
Description
Initial
Value
RangeMode
RO /
RW
Index
Number
Fault State
FAULT_STATE
28 RO N/A
1=Clear
2=Active
1=Clear
Data Type: Unsigned8
Forces output function blocks that are not Out
of Service to the fault state condition. While this
parameter is active the output function blocks
will go to an actual mode of Local Override
(LO) and will perform their fault state actions
(see Action On Fault Detection for the output
blocks on pages 4-72 and 4-152 of this
section). This parameter is used to test the
fault state behavior that normally occurs when
there is a communication problem between
devices. This parameter is changed by the
SET_FSTATE and CLR_FSTATE parameters
so long as the feature Fault State is selected
(see Feature Selection [index number 18] in
this table).
Set Fault State
SET_FSTATE
29 RW ALL
1=Off
2=Set
1=Off
Data Type: Unsigned8
Selecting Set changes the parameter
FAULT_STATE to Active. This is essentially a
“write only” parameter as it will always read
OFF because it is defined as momentary.
Writing a value of OFF has no affect. To use
this parameter the feature Fault State must be
selected (see Features Selected on page
4-5).
Clear Fault State
CLR_FSTATE
30 RW ALL
1=Off
2= Clear
1=Off
Data Type: Unsigned8
Selecting Clear changes the parameter
FAULT_STATE to Clear and clears the output
function blocks of the FAULT_STATE if the
field condition, if any, has cleared. This is
essentially a “write only” parameter as it will
always read OFF because it is defined as
momentary. Writing a value of OFF has no
affect. To use this parameter the feature Fault
State must be selected (see Features Selected
on page 4-5.
Maximum Notify
MAX_NOTIFY
31 RO N/A 3 3
Data Type: Unsigned8
The maximum number of alert reports that this
device can send without getting a confirmation.
To control alert flooding, the number can be set
lower by adjusting the LIM_NOTIFY parameter
value. For DVC6000f instruments, this value is
fixed at 3.
Maximum Alerts Allow
LIM_NOTIFY
32 RW ALL 0 to MAX_NOTIFY MAX_NOTIFY
Data Type: Unsigned8
The number of alert reports that this device
can send without getting a confirmation up to
the maximum permitted in the parameter
MAX_NOTIFY. If set to zero, then no alerts are
reported.
Confirm Time
CONFIRM_TIME
33 RW ALL
> 0
Set by FCS
640000
Data Type: Unsigned32
The time (in 1/32 millisecond) the device waits
for confirmation of receipt of an alert report
before trying again.
Write Lock
WRITE_LOCK
34 RW ALL
0=Undefined
1=Unlocked
2=Locked
1=Unlocked
Data Type: Unsigned8
If set to Locked, no writes from anywhere are
allowed except to clear WRITE_LOCK by
entering Unlocked. Block inputs will continue to
be updated if they are subscribers. The feature
Soft Write Lock must be selected to enable
writing to this parameter (see Device Features
in this section).
−Continued−
4
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