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FP-AS310 Flow Meter English Manual v1
FP-AS310 Flow Meter English Manual v1
  • ⚠Safety instructions
  • This instruction manual version is v1.0
  • Measure principle and usage scenario
  • Warranty
  • Exterior, Spec, Model
    • Device
    • Paddle set
    • T-connector
  • Installation and Configuration
    • Mechanism installation
    • Mechanical and electrical installation
    • Parameter Configuration
  • Human-Machine Interface (HMI)
    • Introduction the Human-Machine Interface (HMI)
    • 主畫面
    • Simulation Mode
    • Main Screen Data Interpretation
    • Password Entry Screen
    • Settings Screen
  • Communications
    • NPN output
    • Analog current output (4-20mA)
    • RS485 and Modbus RTU Setting
    • Modbus RTU Protocol
      • Read-only memory read instruction(04) and memory lists
      • 讀寫型記憶體讀取指令(03)
      • 讀寫型記憶體單Register寫入指令(06)
      • 讀寫型記憶體雙Register寫入指令(30)
      • Single Bit 資料讀寫指令(01/05)(人機介面常用)
  • Parameters Table
    • A Category Options and Descriptions
    • B Category Options and Descriptions
    • C Category Options and Descriptions
    • D Category Options and Descriptions
    • E Category Options and Descriptions
    • F Category Options and Descriptions
    • H Category Options and Descriptions
  • Alarm 及 系統狀態說明
  • Trouble and abnormality shooting
    • Iout 4-20mA debug process FP-AS310A
    • NPN alarm debug process FP-AS310A
    • NPN pulse Debug process FP-AS310A
    • RRS485 Debug Process FP-AS310R
  • Certification
  • FP-AS310 Product Page
  • LORRIC Website
  • LORRIC Integration and Application Center
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  • Instruction example
  • Format of flowmeter response(04)
  • Definition and address of memory
  • Read-only memory list
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  1. Communications
  2. Modbus RTU Protocol

Read-only memory read instruction(04) and memory lists

The length of total register requested by a single reading command must be less than or equal to 20 registers. Instructions longer than this will be ignored.

Instruction example

CommentShare feedback on the editorFormat of command (04) from masterCommentShare feedback on the editor

Byte#

1

2

3

4

5

6

7

8

Node ID

Slave Address

Function Code

Address of first reading register

Address of first reading register

Quantity of registers to be read

Quantity of registers to be read

CRC

CRC

Example 01~FF

01

04

00

00

00

02

71

CB

Description of master command

The example will read instantaneous flow volume.

slave address: 01(address of this flowmeter)

function code: 04(read instruction)

Address of first reading register: 0000(Address of first register to read)

Quantity of registers to be read: 0002 (need to read 2 registers from 0000)

CRC: 71 CB(Calculating error correcting code according to CRC algorithm)

Format of flowmeter response(04)

CommentShare feedback on the editor

Byte#

1

2

3

4

5

6

7

8

9

Node ID

Slave Address

Function Code

Amount of response Byte

Data Byte #1

Data Byte#2

Data Byte#3

Data Byte#4

CRC

CRC

Example01~FF

01

04

04

00

00

00

00

FB

84

Description of flowmeter response example

slave address: 01(address of this flowmeter)

function code: 04(read instruction)

Amount of response Byte: 04 (2 register=4 byte)

Data Byte: 00 00 00 00(Assume the instantaneous flow volume is 0)

CRC: FB 84(Calculating error correcting code according to CRC algorithm)

Definition and address of memory

How to use these charts

Read-write memory type

Function

Memory content

Describe the memory content function.

Register location

Read-write memory locations are not shared with read-only memory.

Register length

The length of variable memory. The unit is Register(2Byte).

Bits

​

Data type

The format of sending and receiving data type.

Remarks

​

Read-only memory list

Memory content
Register location
Register length
Bits
Data type
Remarks

Flowrate

0x00 0x00

2

4

float

Total

0x00 0x04

2

4

float

Flowrate*100

0x00 0x06

2

4

float

Total*100

0x00 0x0A

2

4

float

error code a

0x00 0x0E

1

2

int

error code b

0x00 0x0F

1

2

int

error code c

0x00 0x10

1

2

int

error code d

0x00 0x11

1

2

int

System Status

0x00 0x12

1

2

int

Total(64)

0x00 0x13

4

8

longlong

Dosing(float)

0x00 0x17

2

4

float

Dosing100(32)

0x00 0x19

2

4

float

Dosing(64)

0x00 0x1B

4

8

longlong

M

0x00 0x53

1

2

int

m

0x00 0x54

1

2

int

flow*100_2

0x00 0x55

2

4

float

na

0x00 0x57

2

4

total*100_2

0x00 0x59

2

4

float

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