Bell VFM60 Series, User Introduction Manual

Page: 29 / 59

VFM-60
Vortex Flowmeter
Rev1.3
Date:24/04/2020 User’s Manual
29 / 59
Digital setting address is as below.
Chart 6.3 Address of digital setting
Register Usage Restriction of
modification
Nature Date
type
2000~2001 D001 Max pressure -1e5~1e6 Read/Write Float
2002~2003 D002 Min pressure -1e5~1e6 Read/Write Float
2004~2005 D003 Max temperature -1e5~1e6 Read/Write Float
2006~2007 D004 Min temperature -1e5~1e6 Read/Write Float
2008~2009 D005 Density 0~1e6 Read/Write Float
2014~2015 D008 K factor 0~1e6 Read/Write Float
2016~2017 D009 Max flow rate 0~1e6 Read/Write Float
2018~2019 D010 Min flow rate 0~1e6 Read/Write Float
2024~2025 D013 Factor for total flow output 0~1e6 Read/Write Float
2026~2027 D014 Ambient pressure 0~1e6 Read/Write Float
2028~2029 D015 Pipe size 0~1e6 Read/Write Float
2040~2041 D021 Cut off small signal 0~1e6 Read/Write Float
2058~2059 D030 Specific density
[0.55
，
0.90]
Read/Write Float
2060~2061
D031 mol% of N2 and H2
[0
，
0.1]
Read/Write Float
2062~2063
D032 mol% of CO2
[0
，
0.3]
Read/Write Float
2064~2065
D033 Higher heating value
[20
，
48]
Read/Write float
The chart above indicates the register address, usage of the register, restriction of modification,
read/write nature and date type. The register above are all holding register, the supporting function
code is 03,04,06,16 function code.
6.2 Commends
Function code 03 and 04 are the codes supported for reading the registers. Function code 06 is for
writing one register. Function code 16 is for wrting multi registers. Function code 06 is only
supported for writing short date. Function code 16 is supported for writing both short date and float
date.
Function code 03 – Read register
Request Response
01 : Address 01: Address
03 : Function code 03 : Function code
00 : Register address higher 04 : Quantity of bit
00 : Register address lower (display the address) 80 : Date 1
00 : Register number higher 04 : Date 2
02 : Register number lower 80 : Date 3
CRCL : CRC Parity code lower 80 : Date 4