KROHNE IFC 090 i Converter FOUNDATION FIELDBUS - Manual (Page 21)

Supplementary Documentation Page 21 of 44
IFC090, IFC090 i with FF
IFC090-FF Block Description
IFC090 FF 01/2006
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
STATUS_OPTS R/W
STATUS_OPTS specifies how the OUT value status has to be set. If no
status option is selected, the channel value status is used. Otherwise, the
OUT status is set subject to the following possible status options:
Uncertain if Limited Set the OUT status to Uncertain if if the
channel value is limited.
BAD if Limited Set the OUT status to BAD if the channel
value is limited.
Uncertain if Man mode Set the OUT status to Uncertain if the actual
mode of the Analog Input Block is Man.
Otherwise the channel status would be
used with constant limit.
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.
UPDATE_EVT R
Alert generated by a change to static data. The subfields of this parameter
give detailed information about the changed static parameter, time of change
and state of the update event.
XD_SCALE R/W
Together with parameter OUT_SCALE, XD_SCALE is one of the two main
scaling parameters. It can’t be seen isolated. These two parameters specify
a mapping function from the channel value obtained from the. See 5.3.2 for
details.
NOTE:
Since the Transducer Block parameter PRIMARY_VALUE has a fixed, not
changeable unit, and the unit of XD_SCALE has to match meet the unit of
this parameter. It is possible to change the unit of XD_SCALE but this would
result in a BLOCK_ERR of ‘Block Configuration Error’ and associated OUT
value status.
Table 3: Analog Input Block parameters