If the Model 705 fails to find a measurable level, either due
to an actual loss of a level signal or the loss of a proper
Fiducial (reference) signal, the TRANSDUCER BLOCK
maintains the last good value as the output and flags the fail-
ure. The QUALITY is “Bad,” the SUB_STATUS is “Sensor
failure” for no level (or “Device failure” for loss of the
Fiducial), and the LIMIT attribute is “Constant.”
Refer to Section 7.1.2 for additional information.
6.1
Simulation Feature
The Eclipse Model 705 with F
OUNDATION
fieldbus
™
sup-
ports the Simulate feature in the Analog Input block. The
Simulate feature is typically used to exercise the operation of
an AI block by simulating a TRANSDUCER block input.
This feature can not be activated without the placement of a
hardware jumper. This jumper is installed as standard on
the Eclipse Model 705, and is placed in an inconvenient
location to avoid inadvertent disabling of this feature.
NOTE: A BLOCK_ERR of “Simulation Active” in the Resource Block
does not mean simulation is active—it merely indicates that the
simulation (hardware) enabling jumper is present.
Contact the factory for instructions on how to remove this
jumper and, if necessary, permanently disable the Simulate
feature.
39
57-640 Eclipse Guided Wave Radar Transmitter - F
OUNDATION
fieldbus
™
