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TUF-2000F User Manual
For example, reading the registers from REG0001 to REG0010 in the unit #1 (ultrasonic flow
meter) under the MODBUS-RTU format, the command could be as following
01
03
Unit Function
While under the MODBUS-ASCII format, the command could be
:01030000000AF2(CR and LF)
Details about the standard MODBUS protocol will not be studied in this manual; please the
users find them on other related materials.
By default, the RS232/RS485 will setup with 9600,none,8,1(9600bd，none parity，8 data bits，
1 stop bit)
5.1.1 MODBUS REGISTERS TABLE
MODBUS REGISTERS TABLE for TUF-2000F
（please take notice the difference with the water meter MODBUS table）
REGISTER
NUMBER
0001-0002
0003-0004
0005-0006
0007-0008
0009-0010
0011-0012
0013-0014
0015-0016
0017-0018
00
00
00
start REG
Numbers of REGs
VARIABLE NAME
2
Flow Rate
2
Energy Flow Rate
2
Velocity
2
Fluid sound speed
2
Positive accumulator
2
Positive decimal fraction
2
Negative accumulator
2
Negative decimal fraction
2
Positive energy accumulator
0A
C5
Check-sum
FORMAT
REAL4
REAL4
REAL4
REAL4
LONG
REAL4
LONG
REAL4
LONG
21
CD
（hex）
NOTE
3
Unit: m
/h
Unit: GJ/h
Unit: m/s
Unit: m/s
Unit is selected by
M31, and depends
on totalizer
multiplier
Same unit as the
integer part
Long is a signed
4-byte integer,
lower byte first
REAL4 is a format
of Singular
IEEE-754 number,
also called FLOAT
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