Alarm Handling - Fisher FIELDVUEDVC6200f Instruction Manual

Instruction Manual
D103412X012
D Multi‐bit Alarm (Bit‐Alarm) Support permits the instrument to treat each Field Diagnostic alert separately when
broadcast to the Host. Without Multi‐Bit Alarm Support, an individual Field Diagnostic alert must be acknowledged
before another Field Diagnostic alert can be broadcast to the Host.
Features Selected
Note
Typically this parameter does not need to be changed. The unit will be operational using the default values assigned by the factory.
Fault State, Software Write Lock, and Output Readback are set by default.
Features Selected (FEATURE_SEL [18]) indicates which Resource Block Options features have been selected and is used
to select the desired features.
D Reports—Selecting reports enables alert and event reporting. Reporting of specific alerts may be suppressed. See
Alerts on page 54.
D Fault State—Selecting fault state enables the ability of the output block to react to various abnormal conditions by
shedding mode. See parameter descriptions for Set Fault State (SET_FSTATE [29]) and Clear Fault State
(CLR_FSTATE [30]) in table 4‐3 and "Action on Fault Detection".
D Soft Write Lock—When selected, permits using Write Lock (WRITE_LOCK [34]) to prevent any external change to
parameter values. Block connections and calculation results will proceed normally, but the configuration is locked.
Also see Write Lock, on page 23.
D Multi‐bit Alarm (Bit‐Alarm) Support— When selected, the instrument will allow the instrument to treat each Field
Diagnostic alert separately when broadcast to the Host.

Alarm Handling

Alert Key (ALERT_KEY [4]) is a number that permits grouping alerts. This number may be used to indicate to the
operator the source of the alert, such as the instrument, plant unit, etc. Enter a value between 1 and 255.
Confirm Time (CONFIRM_TIME [33]) determines the time, in 1/32 of a millisecond, the instrument waits for
confirmation of receipt of a report before trying again. If Confirm Time is 0, the instrument does not retry to send the
report. Enter 0 or a value between 320000 (10 secs) and 640000 (20 secs).
Limit Notify (LIM_NOTIFY [32]) is the number of alert reports that the device can send without getting a confirmation
up to the maximum permitted in Maximum Notify (MAX_NOTIFY [31]). If Limit Notify is set to zero, no alerts are
reported. Enter a value between 0 and 4.
To have the instrument report alerts without having the host poll the alerts parameters, select the Reports feature (see
Feature Select).
Maximum Notify (MAX_NOTIFY [31]) indicates the maximum number of alert reports that the device can send without
getting a confirmation. This limit is determined by the amount of memory available for alert messages. The number
can be set lower, to control alert flooding, by adjusting Maximum Alerts Allowed (LIM_NOTIFY [32]).
Block Alarm Disabled The Block Alarm (BLOCK_ALM [36]) is used for all configuration, hardware, connection failure or
system problems in the block. Alarm Summary (ALARM_SUM [37]) determines if the Write Alarm (WRITE_ALM [40])
and Block Alarm [BLOCK_ALM [36]) are disabled.
DVC6200f Digital Valve Controller
Detailed Setup - Resource Block
February 2017
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