User manual

® Waves System V 1.1 - 2011
I.D. AL - FLASH MPX HD - Full HD video Player - User Manual
7 - RS485 serial link protocol
The player can communicate with other devices. It receives commands on the Rx input.
The player complies with the RS485 norm.
1 - +12V Baudrate: 9600
2 - RX- Data bits: 8
3 - RX+ Parity: none
4 - Ground / 0V Stop bit:1
5 - Not connected Handshaking: none
6 - Not connected
Reception Protocole
The player can receive commands to start reading a folder. If the same link is used to control several
players, each player will only execute commands addressed to its own number, allocated in the Option
menu.
The reception protocole is made of a 3 bytes frame.
Byte 1 (status) + Byte 2 (command) + Byte 3 (data)
Note :
- One byte is 8 bits : b7 b6 b5 b4 b3 b2 b1 b0
- A binary symbol for 8 bits is : xxxxxxxxb
- A Hexadecimal symbol is : xxh
Byte 1 : Status - 1xxxxxxxb
> b7 = 1: refer to a status byte
> b6 - b0: player identification to be addressed to from 001 to 127 (000001b - 1111111b)
- The default player address (ID) is 001. You can change it by sending a speciifc code (see next page).
- Several players may have the same identification number to create groups.
- Identification 000 is the "global" code, all players are concerned by the command (unique command for
all the players, «broadcast»).
Byte 2 (Command) + Byte 3 (Data) - 0xxxxxxxb
- Byte 2: command (command byte is always followed by a byte of data).
> b7 = 0 : refer to a byte of command or data
> b6, b5, b4, b3, b2, b1, b0 : command code sent to the player
- 15 -
Byte 1 (status) Byte 3 (data)Byte 2 (command)