Address:
|
S/N. |
Holding Register |
Access Address (Hex/ Decimal) |
Definition |
|
1 |
41001 |
0x03E8 / 1000 |
Mass Flow |
|
2 |
41003 |
0x03EA / 1002 |
Volume Flow |
|
3 |
41005 |
0x03EC / 1004 |
Total Mass |
|
4 |
41007 |
0x03EE / 1006 |
Total Volume |
|
5 |
41009 |
0x03F0 / 1008 |
Density |
|
6 |
41011 |
0x03F2 / 1010 |
Temperature |
|
7 |
41013 |
0x03F4 / 1012 |
Pipeline Vibration Frequency |
|
8 |
41015 |
0x03F6 / 1014 |
Module |
|
9 |
41017 |
0x03F8 / 1016 |
S/N |
|
10 |
41019 |
0x03FA / 1018 |
Flow Unit |
|
11 |
41021 |
0x03FC / 1020 |
Density Unit |
|
12 |
41023 |
0x03FE / 1022 |
Range |
|
13 |
41025 |
0x0400 / 1024 |
Decimal Places |
|
14 |
41027 |
0x0402 / 1026 |
Tiny Signal Cut Ratio |
|
15 |
41029 |
0x0404 / 1028 |
Display Refresh Time |
|
16 |
41031 |
0x0406 / 1030 |
Internal Mass Flow Meter Parameters |
|
17 |
41033 |
0x0408 / 1032 |
Internal Mass Flow Meter Parameters |
|
18 |
41035 |
0x040A / 1034 |
Internal Mass Flow Meter Parameters |
|
19 |
41037 |
0x040C / 1036 |
Measured Medium |
|
20 |
41039 |
0x040E / 1038 |
Current Output Selection |
|
21 |
41041 |
0x0410 / 1040 |
Input Password |
|
22 |
41043 |
0x0412 / 1042 |
Internal Mass Flow Meter Parameters |
|
23 |
41045 |
0x0414 / 1044 |
Internal Mass Flow Meter Parameters |
|
24 |
41047 |
0x0416 / 1046 |
Internal Mass Flow Meter Parameters |
|
25 |
41049 |
0x0418 / 1048 |
Total Data Clearance |
|
26 |
41051 |
0x041A / 1050 |
Internal Mass Flow Meter Parameters |
|
27 |
41053 |
0x041C / 1052 |
Internal Mass Flow Meter Parameters |
|
28 |
41055 |
0x041E / 1054 |
Internal Mass Flow Meter Parameters |
|
29 |
41057 |
0x0420 / 1056 |
Internal Mass Flow Meter Parameters |
|
30 |
41059 |
0x0422 / 1058 |
Internal Mass Flow Meter Parameters |
|
31 |
41061 |
0x0424 / 1060 |
Internal Mass Flow Meter Parameters |
|
32 |
41063 |
0x0426 / 1062 |
Internal Mass Flow Meter Parameters |
|
33 |
41065 |
0x0428 / 1064 |
Internal Mass Flow Meter Parameters |
|
34 |
41067 |
0x042A / 1066 |
Internal Mass Flow Meter Parameters |
|
35 |
41069 |
0x042C / 1068 |
Internal Mass Flow Meter Parameters |
|
36 |
41071 |
0x042E / 1070 |
Internal Mass Flow Meter Parameters |
Attention:
Each holding register is 4 bytes (2 consecutive maintain registers), and it takes two addresses (low address). The register with a background in the tables is read-only register. The writing operation is invalid.
The address of 0x41049 is total-data clearance register. Write 0 in this address could process the clearance operation. Read the register and it will returns back to 1 (Floating point number).
The flow unit setting is 0-7 (The data will be transferred to 4-byte floating point number to transfer).
0èt/h；1èkg/h；2èg/h；3èkg/min；4èg/min；5èm3/h；6èL/min；7èml/min
The density unit setting is 0-2 (The data will be transferred to 4-byte floating point number to transfer). And it respectively stands for: g/cm3、g/L、t/m3
0è g/cm3；1èg/L；2èt/m3
The current output selection is 0-1. And it respectively stands for flow and density. The data will be transferred to 4-byte floating point number to transfer.
The measured medium setting is 0-1. And it respectively stands for liquid and gas. The data will be transferred to 4-byte floating point number to transfer.
ModBus Communication (RTU Format)
Check Method: no check
Data Bits: 8
Stop Bits: 1
Coriolis MassFlow meters ModBus Communication Protocol (RTU)
1. Read N variables
The host requested information frame:
Mass Flow Meter Address+0x03+Register’s Starting Address（2bytes，High Byte is in the front）+ Number of Register’s Reading and Writing 2*N（2bytes，High Byte is in the front）+ CRC Check Code（2bytes，Low Byte is in the front）
Response Information from the machine frame:
Mass Flow Meter Address +0x03+Bytes of Data 4*N（1字节）+ Register’s Data（4*N bytes，High Byte is in the front）+ CRC Check Code（2 bytes，Low Byte is in the front）
For Example:
2. Write N variables
The host requested information frame:
Mass Flow Meter Address +Function Code 0x10+ Register’s Starting Address（2 bytes，High Byte is in the front）+ Number of Register’s Reading and Writing 2*N（2bytes，High Byte is in the front）+ Bytes of Data 4*N（1byte）+Data waiting to be written（4*N bytes，High Byte is in the front）+ CRC Check Code（2 bytes，Low Byte is in the front）
Response Information from the machine frame:
Mass Flow Meter Address + Function Code 0x10+ Register’s Starting Address（2 bytes，High Byte is in the front）Number of Register’s Reading and Writing 2*N（2bytes，High Byte is in the front）+
（2 bytes，Low Byte is in the front）
China Coriolis Mass Flowmeter Supplier: Silver Automation Instruments
More information http://www.silverinstruments.com/product/flow-measurement/coriolis-mass-flow-meter.html
