Dwyer UXF3 - Manual (Page 23)

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(3) Message transmission (example)
The following is an example of reading out the flow rate from station No. 1.
Relative address of the flow rate: 0004
H
(Register No. 30005), Number of data to be read out: 02
H
Command message composition (byte) Response message composition (byte)
Station No. 01
H
Station No. 01
H
Function code 04
H
Function code 04
H
Upper 00
H
Read-out byte number 04
H
Read-out start No.
(relative address)
Lower 04
H
Upper 43
H
Upper 00
H
Contents of the
first word data
Lower 40
H
Read-out word
number
Lower 02
H
Upper 00
H
Lower 30
H
Contents of the
next word data
Lower 00
H CRC data
Upper 0A
H
Lower EF
H CRC data
Upper D4
H
Meaning of read-out data
Data having the unit m
3
/h and floating decimal point
The read-out data is expressed as a 32-bit single-precision floating value.
Connect the read-out 4-byte data, and convert it into an actual value using an appropriate conversion program.
Flow rate, 192.0 m3/h = 1.5x (2 to the 7th power)
= 0100 0011 0100 0000 0000 0000 0000 0000 (binary number)
Refer to Section 7.1 for handling of floating data.
Point For handling of floating data, refer to Section 7.1.
Bulletin F-107-UXF3-S