15.1.3
Functions of SitrLRHA
The functions for this block are listed below.
Configuration data
The configuration data comprises units, configuration of the 4 to 20 mA signal and HART
variables, scaling of the 4 to 20 mA signal, and the diagnostics values. After a change is made
in the device, reading of configuration data must be triggered with "Read configuration data" in
the parameter view of the faceplate. If the parameters were read back before a complete
download to the PLC, the configuration does not need to be reloaded from the device.
The SitrLRHA function block has the following configuration data which can be read out of the
Sitrans LR by means of the "Read configuration data" command:
Description
Block parameters (I/O)
Configuration of
PV
,
SV
,
TV
,
QV
inputs
PV_Meas0
PV_Meas1
PV_Meas2
PV_Meas3
PV_Meas4
Vessel form
TankType
Units
PV
,
SV
,
TV
,
QV
PV_Unit0
PV_Unit1
PV_Unit2
PV_Unit3
PV_Unit4
PV_InUnit
LevelUnit
VolUnit
DistUnit
SpaceUnit
Scaling 4 ... 20 mA signal
ScaleIn.Low/ScaleOut.Low
ScaleIn.High/ScaleOut.High
Diagnostics values
InAlgorithm/Algorithm
InConfidenc/Confidenc
InEchoStren/EchoStren
Note
If the module is used without HART communication, the inputs must be parameterized
accordingly manually since reading out of the configuration from the module is not possible.
Limit monitoring
The block monitors the process value
PV_In
for limits. The value is cyclically integrated into the
process image of the controller. The limits are configured on the block.
SITRANS LR HART
15.1 SitrLRHA
SITRANS Library for PCS 7
Function Manual, 05/2019, A5E35351976-11
681
Summary of Contents for SITRANS PCS 7
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