Pepperl+Fuchs FD0-VC-Ex4.FF Manual page 51

Parameter
IO_OPTS
STATUS_OPTS W
READBACK_D
CAS_IN_D
CHANNEL
FSTATE_TIME W
FSTATE_VAL_D W
BKCAL_OUT_D W
RCAS_IN_D
SHED_OPT
RCAS_OUT_D
UPDATE_EVT
BLOCK_ALM
Subject to reasonable modifications due to technical advances.
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Char.
W Options which allow the user to adapt the block algorithm to the task of the
S block. Possible options:
OOS Invert
Faultstate restart
Faultstate type
SP-PV Track LO
Target to Man
SP-PV Track Man
PV for BKCal_Out
Option which allows the user to adapt processing of the status by the block to
S the task of the block. The option is:
OOS Propagate Fail Bkwd If this option is set, the function block does not signal by
This parameter gives the current valve position which is fed back by the trans-
ducer block.
Via this parameter, the reference value is specified by another function block
or a control system in the "Cas" mode.
W The channel number of a transducer block is entered in this parameter in
S order to connect the function block with this transducer block. Valid values are
OOS 1 ... 4.
Time in seconds between the detection of a missing specified reference value
S and setting the safety value.
This value is used as safety value if the I/O option Faultstate type is set.
S
Feedback of the current valve position to a superior function block or a control
system. The value of BKCAL_OUT_D is determined by the option PV for
BKCal_Out.
W Via this parameter, the reference value is specified by another function block
or a control system in the "RCas".
W Defines the behaviour of the block in "RCas" mode on detection of a missing
S specified reference value.
W Feedback of the current reference value to a control system.
This parameter is used to signal to the control system that a parameter
marked by "S" was overwritten if the control system supports alarm mes-
sages.
This parameter is used to signal diagnosis messages which are displayed in
BLOCK_ERR to the control system, if the control system supports alarm mes-
sages.
Fieldbus Valve Coupler FD0-VC-Ex4.FF
Function blocks DO and DI
Description
OUT_D is calculated to: SP_D is inverted
After a device reset SP_D is set to the value of
FSTATE_VAL_D.
If fault state type is set, SP_D is set to FSTATE_VAL_D
in case of fault, otherwise the last value is kept.
In case of fault SP_D is always set to the value of
PV_D. Thus the current position of the valve is kept and
not the last reference value.
In case of fault the target mode is modified to "Man"
and the safe status is kept in this way.
If the target mode is "Man", SP_D is always set to the
value of PV_D.
As the value of BKCAL_OUT_D, PV_D is always used
instead of SP_D in order to be able to use PV_D in a
function block application.
an own alarm if the status of PV_D becomes "bad" but
transfers the status incl. substatus via BKCAL_OUT_D.
Copyright Pepperl+Fuchs, Printed in Germany
51