Flowserve MX FOUNDATION Fieldbus Field Unit - Manual (Page 71)

71
MX/QX FOUNdaTION Fieldbus Field Unit FCd LMENIM2330-01 – 08/11
flowserve.com
BKCAL_OUT
The value and status required by an upper block’s BKCAL_IN so that the upper block may prevent
reset windup and provide bumpless transfer to closed loop control.
BKCAL_OUT_D
The output value and status provided to an upstream discrete block. This information is used to
provide bumpless transfer to closed loop control.
BKCAL_SEL_1
Control elector output value and status associated with SEL_1 input, which is provided to BKCAL_IN
of the block connected to SEL_1 in order to prevent reset windup.
BKCAL_SEL_2
Control selector output value and status associated with SEL_2 input, which is provided to BKCAL_IN
of the block connected to SEL_2 in order to prevent reset windup.
BKCAL_SEL_3
Control selector output value and status associated with SEL_3 input, which is provided to BKCAL_IN
of the block connected to SEL_3 in order to prevent reset windup.
BLOCK_ALM
The block alarm is used for all configuration, hardware, connection failure or system problems in
the block. The cause of the alert is entered in the subcode field. The first alert to become active will
set the Active status in the Status attribute. As soon as the unreported status is cleared by the alert
reporting task, another block alert may be reported without clearing the Active status, if the subcode
has changed.
BLOCK_ERR
This parameter reflects the error status associated with the hardware or software components
associated with a block. It is a bit string, so that multiple errors may be shown.
BYPASS
The normal control algorithm may be bypassed through this parameter. When bypass is set, the
setpoint value (in percent) will be directly transferred to the output. To prevent a bump on transfer
to/from bypass, the setpoint will automatically be initialized to the output value or process variable,
respectively, and the path broken flag will be set for one execution.
CAS_IN
This parameter is the remote setpoint value, which must come from another Fieldbus block, or a DCS
block through a defined link.
CAS_IN_D
This parameter is the remote setpoint value of a discrete block, which must come from another
Fieldbus block, or a DCS block through a defined link.
CHANNEL
The number of the logical hardware channel that is connected to this I/O block. This information
defines the transducer to be used going to or from the physical world.
CLR_FSTATE
Writing a Clear to this parameter will clear the device fault state if the field condition, if any, has
cleared.