LEFM 200 Modbus User Manual IB0147 Rev. 08
December 2010 Page i Table of Contents
TABLE OF CONTENTS
1.0 PURPOSE..................................................................................................................................1
1.1 Related Documents.....................................................................................................................1
1.2 Intended Audience ......................................................................................................................1
1.3 Procedure ....................................................................................................................................1
2.0 HOLDING REGISTERS - LEFM 240C(I), LEFM 220C(I), LEFM280C(I), AND
SOUNDTRACK....................................................................................................................................3
2.1 Registers to Save the Setup.........................................................................................................3
2.2 Registers for Scaling Flow, Flow Units and Pulse Output .........................................................3
2.3 Reference Temperature and Pressure for Gross to Net Conversions and Fail State References 5
2.4 Display Output Screen Format Definitions.................................................................................5
2.5 Modbus Protocol Setups .............................................................................................................6
2.6 Calculated Viscosity Setups........................................................................................................7
2.7 Calculated Density Setups ..........................................................................................................8
2.8 Password Entry ...........................................................................................................................9
2.9 Analog Inputs............................................................................................................................10
2.10 Analog Outputs.....................................................................................................................13
2.11 Display Notes........................................................................................................................16
2.12 Meter Data Summary Registers (For 101A639 Rev 07.xx.xx and later)..............................16
3.0 LEFM 210E (SINGLE PATH EXTERNAL FLOW METERS)........................................19
3.1 Registers to Save the Setup.......................................................................................................19
3.2 Registers for Scaling Flow, Flow Units and Pulse Output .......................................................19
3.3 Display Output Screen Format Definitions...............................................................................20
3.4 Modbus Protocol Setups ...........................................................................................................21
3.5 Analog Inputs............................................................................................................................21
3.6 Analog Outputs.........................................................................................................................22
3.7 Display Notes............................................................................................................................23
4.0 DATA OUTPUTS ā INPUT REGISTERS...........................................................................25
4.1 Path Transit and Delta Time Measurements.............................................................................25
4.2 Acoustic Data Quality...............................................................................................................26
4.3 Flow Data..................................................................................................................................29
4.4 Analog Input Values .................................................................................................................29
4.5 Setup File Information..............................................................................................................30
4.6 Fluid Property Data...................................................................................................................31
4.7 Hydraulic and Velocity Data ....................................................................................................32
4.8 Meter and Path Status Data.......................................................................................................33
4.9 Transducer Impedance Test Data..............................................................................................34
5.0 EXAMPLES ............................................................................................................................37
5.1 Polling Integer Input Registers .................................................................................................37
5.2 Polling Floating Point Registers ...............................................................................................39
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