21
BE57-646 ECLIPSE Guided Wave Radar Transmitter - F
OUNDATION
fieldbus
™
2.4.5 Simulation Feature
The ECLIPSE Model 706 with F
OUNDATION
fieldbus
™
supports the Simulate feature in the Analog Input block.
The Simulate feature is typically used to exercise the opera-
tion of an AI block by simulating a TRANSDUCER block
input.
This feature cannot be activated without the placement of a
hardware jumper. This jumper is installed as standard on
the ECLIPSE Model 706, and is placed under the display
module to avoid inadvertent disabling of this feature. Refer
to figure at left for jumper location.
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.
• The jumper may be removed to eliminate the
BLOCK_ERR, but please note that this will permanently
disable the Simulate feature.
• Refer to page 13 for additional information on the
SOFT_SIMULATION_DISABLE parameter in the
resource block.
2.5 PID Block
The PID Function Block contains the logic necessary to
perform Proportional/Integral/Derivative (PID) control.
The block provides filtering, set point and rate limits, feed-
forward support, output limits, error alarms, and mode
shedding.
Although most other function blocks perform functions
specific to the associated device, the PID block may reside
in any device on the network. This includes a valve, a trans-
mitter, or the host itself.
The ECLIPSE Model 706 FF PID Block implementation
follows the specifications documented by the Fieldbus
Foundation.
2.5.1 PId Block Parameters
ACK_OPTION
: Used to set auto acknowledgement of
alarms.
ALARM_HYS
: The amount the alarm value must return to
before the associated active alarm condition clears.
ALARM_SUM
: The summary alarm is used for all process
alarms in the block.
ALERT_KEY
: The identification number of the plant unit.
BAL_TIME
: The specified time for the internal working
value of bias to return to the operator set bias.
Remove jumper to
disable simulation
