H31 - RS232 Command List
Interface
Hardware : 3 wires RS-232C
Baud Rate: 9600
Data Bits: 8
Parity: None
Stop Bits: 1
Flow Control: None
Command Sequence
Write
Basic Protocol
Header:
‘*’
Address Code:
Command Code:
Data:
‘0’ fixed
ASCII Text
Fixed 3 digits
Carriage Return
Terminator Code:
Command Sequence
Read
Header
Basic Protocol
‘*’
Address Code
Command Code
Data
‘0’ fixed
ASCII Text
‘?’ fixed
Terminator Code
Carriage Return
Acknowledgement
Basic Protocol
Receive OK
Return Status
Receive OK
Invalid Command
Transmit OK
Invalid Command
Transmit Ok
Data response
As Write Command
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