Emerson IEC 62591 Instruction Manual page 32

IEC 62591 Wireless Interface Instruction Manual (for ROC800-Series and FloBoss 107)
3-14
Field
Discrete Variables
Bursting
Min Update Time Sets the time interval (in seconds) at which the
Max Update Time Sets the maximum amount of time (in seconds)
Trigger Mode Sets what conditions cause the HART device to
Configuration and Commissioning
Description
Sets the configuration and shows the status of
connected discrete devices that support discrete
variables. The IEC 62591 module can control a
maximum of four discrete variables that display in a
list in the Discrete Variables field. Refer to the
documentation for your specific discrete device for a
list of available set points and possible statuses.
An example of a discrete device that supports
discrete variables is a discrete valve. You can
configure the set point of the discrete valve as being
Open or Closed. These set points are shown as
radio buttons in the Discrete Variables list. The
status of the device in relation to the configured set
point is displayed in the Discrete Variables list to the
left of the set point. In the discrete valve example,
the status might show Closed, Open, Closing, or
Opening.
Note: Click Update to manually refresh the Status
field.
Displays the Min Update Time, Max Update Time,
Trigger Mode, Trigger Level, Dev Var Classif, Unit
Code and HART Command Execution Status.
HART device communicates.
without an update before the HART device
automatically publishes an update.
publish an update at the interval set in the Min
Update time field. Possible options are:
Continuous Constantly publishes updates at the
Min Update Time.
Windowed Publishes updates at the interval set in
the Min Update Time field when the
source deviates from the last
communicated source value by more
than the value set in the Trigger Level
field. If this condition is not met,
updates are published at the interval
set in the Max Update Time field.
Rising Publishes updates at the interval set in
the Min Update Time field when the
source value rises above the value set
in the Trigger Level field. Updates are
published at the Min Update Time until
the value falls below the threshold. If
this condition is not met, updates are
published at the interval set in the Max
Update Time field.
Revised June-2018