LEFM 200 Modbus User Manual IB0147 Rev. 8
December 2010 Page 7 Section 2
BAUD rate defaults to “9600”
This default state is discontinued if the software is re-started with the DIP Switch 2 set to
Disabled (down). Further, if DIP Switch 2 is ENABLED on startup, the software will wait for a
setup before it starts to collect data.
2.6 Calculated Viscosity Setups
The LEFM200/SoundTrack calculates the viscosity of the fluid based on the acoustic attenuation
and the VOS (sound velocity). The software will calculate a fluid ID for each fluid. There are
10 fluid IDs. Using the fluid ID, the software selects a viscosity curve with which it computes
the viscosity. Each of these curves may be given an offset and/or slope in order to optimize the
computation of viscosity. This viscosity is only for the customer’s reference or for a fluid
property.
Setup Variable Holding
Register
Variable
Definition
Address* Notes
Fluid No. 1 - Viscosity
Offset
Float 826 User offset for calibrating –
Viscosity Fluid No. 1
Fluid No. 1 - Viscosity
Slope
Float 828 User slope for calibrating –
Viscosity Fluid No. 1
Fluid No. 2 - Viscosity
Offset
Float 850 User offset for calibrating –
Viscosity Fluid No. 2
Fluid No. 2 - Viscosity
Slope
Float 852 User slope for calibrating –
Viscosity Fluid No. 2
Fluid No. 3 - Viscosity
Offset
Float 874 User offset for calibrating –
Viscosity Fluid No. 3
Fluid No. 3 - Viscosity
Slope
Float 876 User slope for calibrating –
Viscosity Fluid No. 3
Fluid No. 4 - Viscosity
Offset
Float 898 User offset for calibrating –
Viscosity Fluid No. 4
Fluid No. 4 - Viscosity
Slope
Float 900 User slope for calibrating –
Viscosity Fluid No. 4
Fluid No. 5 - Viscosity
Offset
Float 922 User offset for calibrating –
Viscosity Fluid No. 5
Fluid No. 5 - Viscosity
Slope
Float 924 User slope for calibrating –
Viscosity Fluid No. 5
Fluid No. 6 - Viscosity
Offset
Float 946 User offset for calibrating –
Viscosity Fluid No. 6
Fluid No. 6 - Viscosity
Slope
Float 948 User slope for calibrating –
Viscosity Fluid No. 6
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