Data
Component
Name
MODBUS Registers
Units
Long Integer
Format
Single Precision
Floating Point
Format
Double Precision
Floating Point
Format
Signal Strength 40600 - 40601 40700 - 40701 40800 - 40803 —
Flow Rate 40602 - 40603 40702 - 40703 40804 - 40807
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
Net Totalizer 40604 - 40605 40704 - 40705 40808 - 40811
Positive Totalizer 40606 - 40607 40706 - 40707 40812 - 40815
Negative Totalizer 40608 - 40609 40708 - 40709 40816 - 40819
Temperature 1 40610 - 40611 40710 - 40711 40820 - 40823 ºC
Temperature 2 40612 - 40613 40712 - 40713 40824 - 40827 ºC
Di Temp (1-2) 40614 - 40615 40714 - 40715 40828 - 40831 ºC
Di Temp (2-1) 40616 - 40617 40716 - 40717 40832 - 40835 ºC
Abs Di Temp 40618 - 40619 40718 - 40719 40836 - 40839 ºC
Temperature 1 40620 - 40621 40720 - 40721 40840 - 40843 ºF
Temperature 2 40622 - 40623 40722 - 40723 40844 - 40847 ºF
Di Temp (1-2) 40624 - 40625 40724 - 40725 40848 - 40851 ºF
Di Temp (2-1) 40626 - 40627 40726 - 40727 40852 - 40855 ºF
Abs Di Temp 40628 - 40629 40728 - 40729 40856 - 40859 ºF
Flow Rate 40630 - 40631 40730 - 40731 40860 - 40863 GPM
Flow Rate 40632 - 40633 40732 - 40733 40864 - 40867 LPM
Flow Rate 40634 - 40635 40734 - 40735 40868 - 40871 CFH
Flow Rate 40636 - 40637 40736 - 40737 40872 - 40875 CMH
Flow Rate 40638 - 40639 40738 - 40739 40876 - 40879 FPS
Flow Rate 40640 - 40641 40740 - 40741 40880 - 40883 MPS
Flow
Unit Code
40642 - 40643 40742 - 40743 40884 - 40887
1 = Gallons
2 = Liters
3 = MGallons
4 = Cubic Feet
5 = Cubic Meter
6 = Acre Feet
7 = Oil Barrel
8 = Liq Barrel
9 = Feet
10 = Meters
11 = LB
12 = Kg
13 = BTU
14 = MBTU
15 = MMBTU
16 = Ton
17 = KJ
18 = kWh
19 = MWh
Total
Unit Code
40644 - 40645 40744 - 40745 40888 - 40891
Total Exponent
Unit Code
40646 - 40647 40746 - 40747 40892 - 40895
1 = E-1
2 = E0
3 = E1
4 = E2
5 = E3
6 = E4
7 = E5
8 = E6
Time
Unit Code
40648 - 40649 40748 - 40749 40896 - 40899
1 = Second
2 = Minute
3 = Hour
4 = Day
5 = msec
6 = usec
7 = nsec
8 = psec
Table 14: Modbus register map for ‘Big-endian’ word order master devices
For reference: If the transmitters Net Totalizer = 12345678 hex
Register 40602 would contain 1234 hex (Word High)
Register 40603 would contain 5678 hex (Word Low)
Modbus Coil Description Modbus Coil Notes
Reset Totalizers 1
Forcing this coil on will reset all totalizers. After reset, the coil automatically
returns to the off state.
Table 15: Modbus coil map
Communications Protocols
Page 74 May 2016TTM-UM-00136-EN-06
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