Maxell MA-XL1, User Manual

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RS-232/TCP Command (continued)
Response Structure
Header Data
Name
Header
Code
Data length Reserved
Command
Code
Result
Code
Parameter
ASCII Code @ x* x* 0 xx* xx* x~*
Byte number 1 2 3 4 5~6 7~8 9~
* Please refer to the below description for the detailed information.
Header
1. Header code:
One byte ASCII code “@”.
2. Data length:
Two bytes ASCII code for data byte length. Range is 00~99.
3. Reserved:
One byte reserved for future use.
Data
1. Command code:
Two bytes ASCII code. Return the same command code that received from the command structure.
2. Result code:
Two bytes ASCII code as below:
a. Success: “OK”
b. Fail: “ER”
3. Parameter:
N bytes ASCII code for parameter(N = Data length - 4). The parameter is command - specific. Please refer
“Response Code and Parameter” for more information.
[ NOTE ]
• When the product receives the invalid protocol data(ie. the protocol data that product cannot
understand). It returns NAK code (Hex: 0x15) only.
Response Code and Parameter
Response after receiving “Set operation” command
Example as below:
Header Data
Header
Command
Code*
Result
Code
Parameter
Set operation OK @ 0 4 0 x x O K
Set operation ERROR @ 0 4 0 x x E R
Response after receiving “Get operation” command
Example as below:
Header Data
Function Header
Command
Code
Result
Code
Parameter
Product state* @ 0 7 0 S T O K 0 0 1
Audio Volume** @ 0 7 0 A x O K 1 0 0
Audio Gain** @ 0 7 0 A x O K 0 0 2
* Product state: 000 = Waiting, 001 = Ready, 002 = Recording/Streaming, 003 = Record Paused
** Volume parameter range: 000~125, 000 = mute, Gain parameter range: 000~003, 000 = mute