Proline Prowirl 72 FOUNDATION Fieldbus 6 Commissioning
Endress + Hauser 41
18. In the L_TYPE parameter, select the type of linearization for the input variable (direct, indirect,
indirect sq. root)Page 80 ff.
" Caution!
Please note that if the "Direct" linearization type is selected, the settings in the OUT_SCALE
parameter group are not taken into account. The engineering units selected in the XD_SCALE
parameter group are decisive. XD_SCALE_UNIT is then displayed as the unit on the local
display, in accordance with the process variable selected.
Example:
– The measuring range of the sensor is 0 to 30 m³/h.
– The output range to the automation system should also be 0 to 30 m³/h.
The following settings must be made:
– Analog Input Function Block / CHANNEL parameter (select input value),
CHANNEL = 2 Volume flow
– L_TYPE parameter Direct
– XD_SCALE parameter group
19. Use the following parameters to define the limit values for the alarm and early warning
messages:
– HI_HI_LIM Limit value for the upper alarm
– HI_LIM Limit value for the upper early warning alarm
–LO_LIM Limit value for the lower early warning alarm
– LO_LO_LIM Limit value for the lower alarm
The limit values entered must be within the value range specified in the OUT_SCALE
parameter group.
20. In addition to the actual limit values, the behavior in the event of limit value overshoot must
be specified by "alarm priorities" (HI_HI_PRI, HI_PRI, LO_PR, LO_LO_PRI
parameters)Page 80 ff.. Reporting to the fieldbus host system only occurs if the alarm
priority is greater than 2.
Configuring the "Discrete Output Function Block" (optional)
21. By means of the Discrete Output Function Block, various device functionalities can be
triggered in the Transducer Blocks in question via the FOUNDATION Fieldbus interface (e.g.
totalizer reset, switching the positive zero return on or off). Configuration see Page 119 ff.
XD_SCALE 0 % = 0
XD_SCALE 100 % = 30
XD_SCALE UNIT = m³/h
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