Single Bit Data Read/Write Commands (01/05) (Commonly Used in HMIs)
01 Command Example
This command does not reset the C02.Del.Total (Clear Accumulated Total) option. It only provides the HMI with the ability to read Single Bit data using the 01/05 commands. If the command format is correct, the flow meter will respond to the master device with a Bit read acknowledgment.
Control Terminal TX (Transmit) Command Example for 01
Byte#
1
2
3
4
5
6
7
8
Node ID
Slave Address
Function Code
Starting Address of Data to Read
Starting Address of Data to Read
Data to Read (Bits)
Data to Read (Bits)
CRC
CRC
Example 01~FF
01
01
02
01
00
01
AD
B2
Control Terminal TX (Transmit) Command Example for 01
Slave Address:
01
(Address of the flow meter)Function Code:
01
(1-bit Read Command)Starting Address of Data to Read:
02 01
(Start address for C02.Del.Total Clear Accumulated Total)Data to Read (Bits):
00 01
(Read C02.Del.Total data)CRC:
AD B2
(Error-checking code calculated using the CRC algorithm)
Flow Meter RX (Receive) Response Example for 01CommentShare feedback on the editor
Byte#
1
2
3
4
5
6
Node ID
Slave Address
Function Code
Response Bit
Response Bit
CRC
CRC
Example 01~FF
01
01
01
00
51
88
Slave Address:
01
(Address of the flow meter)CommentShare feedback on the editorFunction Code:
01
(Read Command)CommentShare feedback on the editorResponse Bit:
01 00
(The flow meter is still online and operational, responding to the control terminal)CommentShare feedback on the editorCRC:
51 88
(Error-checking code calculated using the CRC algorithm)
05 Command Example
This example activates the C02.Del.Total option to clear accumulated data, resetting the total to zero.
Control Terminal TX (Transmit) Command Example for 05
Byte#
1
2
3
4
5
6
7
8
Node ID
Slave Address
Function Code
Starting Address of Data to Write
Starting Address of Data to Write
Data to Write
Data to Write
CRC
CRC
Example 01~FF
01
05
02
01
FF
00
DC
42
Slave Address:
01
(Address of the flow meter)Function Code:
05
(Register Write Command)Starting Address of Data to Write:
02 01
(Start address for C02.Del.Total Clear Accumulated Total)Data to Write:
FF 00
(Reset C02.Del.Total data)CRC:
DC 42
(Error-checking code calculated using the CRC algorithm)
Flow Meter RX (Receive) Response Example for 05tor
Byte#
1
2
3
4
5
6
7
8
Node ID
Slave Address
Function Code
Starting Address of Data to Write
Starting Address of Data to Write
Data to Write
Data to Write
CRC
CRC
Example 01~FF
01
05
02
01
FF
00
DC
42
Slave Address:
01
(Address of the flow meter)Function Code:
05
(Register Write Command)Starting Address of Data to Write:
02 01
(Memory address for C02.Del.Total Clear Accumulated Total)Data Written:
FF 00
(Acknowledgment of reset action sent back to the control terminal)CRC:
DC 42
(Error-checking code calculated using the CRC algorithm)
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