Supplementary Documentation
Page 26 of 44
IFC090, IFC090 i with FF
IFC090-FF Block Description
IFC090 FF 01/2005
KROHNE Messtechnik GmbH & Co. KG · Ludwig-Krohne-Str. 5
D-47058 Duisburg
Tel.: 0203-301 309
Fax: 0203-301389 · E-mail: [email protected]
Parameter
Access
Description
REV_FLOW1 R/W
REV_FLOW1 can be used to indicate a reverse
IN_1
flow. If
IN_1
flow is
positive (i.e. forward flow), setting this parameter to a value not equal to
‘Discrete state 0’
(0), will result in the same but negative value (i.e.
multiplication by (-1)).
NOTE:
If ‘Forward flow’ is selected in
INTEG_OPTS
(which is the default for
Integrator Block 1) the resulting net flow will always be 0.0 for negative net
flows!
If ‘Reverse flow’
is selected in
INTEG_OPTS
(which is the default for
Integrator 2) the resulting net flow will always be 0.0 for positive flows!
REV_FLOW2 R/W
REV_FLOW2 can be used to indicate a reverse
IN_2
flow . If
IN_2
flow is
positive (i.e. forward flow), setting this parameter to a value not equal to
‘Discrete state 0’
(0), will result in the same but negative value (i.e.
multiplication by (-1)).
NOTE:
If ‘Forward flow’ is selected in
INTEG_OPTS
(which is the default for
Integrator Block 1) the resulting net flow will always be 0.0 for negative net
flows! If
‘Reverse flow’
is selected in
INTEG_OPTS
(which is the default for
Integrator 2) the resulting net flow will always be 0.0 for positive flows!
RTOTAL R
RTOTAL stands for
‘rejects total’
and integrates the net flow values with
status
BAD
(if
‘Use BAD’
is not set in
INTEG_OPTS
) and Uncertain (if
‘Use
Uncertain’
is not set on
INTEG_OPTS
) and is used to calculate the parameter
PCL_INCL
(see
PCL_INCL
for details).
see also:
PCL_INCL
SRTOTAL R
SRTOTAL stands for
'snapshot RTOTAL'
and displays the value of
RTOTAL
just before the last reset (if one has happened, inspect
N_RESET
to see if
one has happen). The initial value is set to zero (0).
SSP R
SSP stands for
'snapshot TOTAL_SP'
and displays the value of
TOTAL_SP
just before the last reset (if one has happened). The initial value is set to zero
(0).
ST_REV R
Static data revision counter. ST_REV will be incremented if a static Integrator
Block parameter has changed. By checking this parameter, control systems
are able to realize if a static parameter has changed its value without
checking all static parameters all the time.
STATUS_OPTS R/W
STATUS_OPTS specifies how the
OUT
,
OUT_TRIP
and
OUT_PTRIP
status
has to be set. If no status option is selected, the status is the result from the
block’s operation. Otherwise, the status is set subject to the following
possible status option:
Uncertain if Man mode Set the
OUT
,
OUT_TRIP
and
OUT_PTRIP
status to
Uncertain
if the actual mode of the Integrator Block
is
Man
.
STOTAL R
STOTAL stands for
'snapshot TOTAL'
and displays the value of the
totalization (=
OUT
) just before a reset (if one has happened). The initial
value is set to zero (0).
STRATEGY R/W
Parameter used to group a set of blocks. This is done by assigning all blocks
belonging to one group the same STRATEGY numerical value.
NOTE
:
This parameter is neither checked nor used by the function block application!
It can be used by control system to group blocks!
TAG_DESC R/W
User description of the intended application of the block. The user is free in
setting this value. The only limitation is the length of 32 characters at
maximum. It is not checked by the application, but has informational
character only.
