User guide

Compact Digital Flow Monitor, Model B3000
Page 46 March 2014
Register Mappings
Data Component Name
MODBUS Registers
Available Units
Long Integer Format
Single Precision
Floating Point Format
Spare 40100…40101 40200…40201 –
Flow Rate 40102…40103 40202…40203
Gallons, Liters, MGallons,
Cubic Feet, Cubic Meters,
Acre Feet, Oil Barrel, Liquid
Barrel, Feet, Meters, Lb, Kg,
BTU, MBTU, MMBTU, TON
Per
Second, Minute, Hour, Day
Spare 40104…40105 40204…40205
Positive Totalizer 40106…40107 40206…40207
Grand Total Totalizer 40108…40109 40208…40209
Battery Voltage 40110…40111 40210…40211 x.xx
Spare 40112…40113 40212…40213 –
Table 9: Modbus register map for ‘Little-Endian’ word order master devices
For reference: If the B3000 Totalizer = 12345678 hex
Register 40106 would contain 5678 hex (Word Low)
Register 40107 would contain 1234 hex (Word High)
Data Component Name
MODBUS Registers
Available Units
Long Integer Format
Single Precision
Floating Point Format
Spare 40600…40601 40700…40701 –
Flow Rate 40602…40603 40702…40703
Gallons, Liters, MGallons,
Cubic Feet, Cubic Meters,
Acre Feet, Oil Barrel, Liquid
Barrel, Feet, Meters, Lb, Kg,
BTU, MBTU, MMBTU, TON
Per
Second, Minute, Hour, Day
Spare 40604…40605 40704…40705
Positive Totalizer 40606…40607 40706…40707
Grand Total Totalizer 40608…40609 40708…40709
Battery Voltage 40610…40611 40710…40711 x.xx
Spare 40612…40613 40712…40713 –
Table 10: Modbus register map for ‘Big-Endian’ word order master devices
For reference: If the B3000 Totalizer = 12345678 hex
Register 40606 would contain 1234 hex (Word High)
Register 40607 would contain 5678 hex (Word Low)