Honeywell ST700 - Attributes

Page 52 FOUNDATION Fieldbus ST 700 Pressure Transmitter User's Guide Revision 2.0
Attributes
Supported Modes
The block supports the following modes:
• AUTO (Automatic)
• MAN (Manual)
• OOS (Out of Service).
Alarm Types
The block supports standard block alarms (see section 3.2).
Additionally it supports, standard HI_HI, HI, LO, and LO_LO alarms
applied to OUT.
Status Handling
Uncertain - EU Range Violation status is always set if the OUT
value exceeds the OUT_SCALE range and no worse condition
exists. The following options from STATUS_OPTS apply, where
Limited refers to the sensor limits:
• Propagate Fault Forward
If the status from the sensor is Bad, Device failure or Bad,
Sensor failure, propagate it to OUT without generating an alarm.
The use of these sub-status in OUT is determined by this option.
Through this option, the user may determine whether alarming
(sending of an alert) is done by the block or propagated
downstream for alarming.
• Uncertain, if Limited
Set the output status of the Analog Input block to uncertain if the
measured or calculated value is limited.
• Bad if Limited
Set the output status to Bad if the sensor is violating a high or
low limit.
• Uncertain if MAN Mode
Set the output status of the Analog Input block to uncertain if the
actual mode of the block is MAN.