Communication Protocol

Rinho devices use a protocol derived from TAIP (Trimble ASCII Interface Protocol), an AVL industry standard.

Message Structure

Every message starts with > (0x3E) and ends with < (0x3C):

>TYPE_DATA;#NNNN;ID=XXXX;*CC<

Message Types

Checksum

The checksum is the XOR of all bytes from > to * (included), expressed in 2 hexadecimal characters.

Communication Methods

Via GPRS/TCP

Requires ID, message number and checksum:

// Query
>QID;#8001;ID=1234;*7C<
 
// Response
>RID1234;#8001;ID=1234;*7B<

Via Terminal (Serial)

Does not require ID or checksum:

// Query
>QID<
 
// Response  
>RID1234;ID=1234;*7B<

Via SMS

Does not require checksum. Device responds with ID:

// Query
>QIO<
 
// Response
>RIO;IGN1;IN1111110;XP010;V127;VBU420;ID=1234;*1B<

Concatenated Commands

Multiple commands can be sent in a single transmission:

>QPWRINHO<>SSSXP0011<

Response:

>RPWOK;ID=1234;*71<>RSSXP0011;ID=1234;*6D<

Useful when using access password, especially via SMS.

Message Number

Hexadecimal ordinal identifier to confirm report reception.

Ranges

Command Example with Number

Sent from server:

>SSSXP0011;#8001;ID=1234;*6A<

Device response:

>RSSXP0011;#8001;ID=1234;*6B<

The server knows that command #8001 was executed.

Acknowledgment (ACK)

To confirm report reception, the server responds:

>ACK;#NNNN;ID=XXXX;*CC<

Where #NNNN is the received message number.

See ACK details →

See Also

• Serial Configuration
• UDP Configuration
• Position Messages