Additional Configuration; Scaling Of The Measured Value In An Ai Block - Endress+Hauser Levelflex FMP55 Operating Instructions Manual

Commissioning (block-based operation)
84
12.2.4 Configuring the Analog Input Blocks
The device has 2 Analog Input Blocks that can be assigned as required to the various
process variables.
Analog Input Block
AI 1
AI 2
1. If necessary, change the block name.
2. Set the block mode to OOS by means of the Block Mode/MODE_BLK parameter,
TARGET element.
3. Use the Channel/CHANNEL parameter to select the process variable which should
be used as the input value for the Analog Input Block .
4. Use the Transducer Scale/XD_SCALE parameter to select the desired unit and the
block input range for the process variable →  84. Make sure that the unit
selected suits the process variable selected. If the process variable does not suit the
unit, the Block Error/BLOCK_ERR parameter reports Block Configuration Error
and the block mode cannot be set to Auto.
5. Use the Linearization Type/L_TYPE parameter to select the type of linearization for
the input variable (factory setting: Direct). Make sure that the settings for the
Transducer Scale/XD_SCALE and Output Scale/ OUT_SCALE parameters are the
same for the Direct linearization type. If the values and units do not match, the Block
Error/BLOCK_ERR parameter reports Block Configuration Error and the block
mode cannot be set to Auto.
6. Enter the alarm and critical alarm messages by means of the High High Limit/
HI_HI_LIM, High Limit/HI_LIM, Low Low Limit/LO_LO_LIM and Low Limit/
LO_LIM parameters. The limit values entered must be within the value range
specified for the Output Scale/ OUT_SCALE parameter →  84.
7. Specify the alarm priorities by means of the High High Priority/HI_HI_PRI, High
Priority/ HI_PRI, Low Low Priority/LO_LO_PRI and Low Priority/LO_PRI
parameters. Reporting to the field host system only takes place with alarms with a
priority greater than 2.
8. Set the block mode to Auto using the Block Mode/MODE_BLK parameter, TARGET
element. For this purpose, the Resource Block must also be set to the Auto block
mode.
12.2.5

Additional configuration

1. Link the function blocks and output blocks.
2. After specifying the active LAS, download all the data and parameters to the field
device.
12.3

Scaling of the measured value in an AI Block

If the type of linearisation L_TYPE = indirect has been selected in an AI block, the
measured value can be scaled within the block. The input range is defined by the
XD_SCALE parameter Through its EU_0 and EU_100 elements. This range is mapped
linearly to the output ranged defined by the OUT_SCALE parameter through its EU_0 and
EU_100 elements.
Levelflex FMP55 FOUNDATION Fieldbus
Default settings
CHANNEL
32949: Level linearized
32856: Distance
Endress+Hauser