Akman Ama-mini Ver2 Manual - Página 15
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Play video files using RS485.
CAUTION: DO NOT SHORT 12VDC to GROUND.
Shorting 12VDC to GND might DAMAGE the player,
The AMA mini can play through the RS485 port and the setting is 9600 baud, 8 bit, N, 1 stop bit.
Here is the pin description of the AMA mini RS485 port:
Please set the jumpers as shown in picture above.
For wiring, use a standard 22ga 4 wire telephone cable.
The 12 VDC pin (and Ground) is available to power small external CPU such as IN6 etc. Max power draw is
200mAmp.
RS485 commands:
The format is as follows: #NN:BBBBBE
1: "#" is the start string of the command, hex value is 0x23.
Every command must begin with #.
2:"NN" (2 digit) is the address of the player from 01 to 99.
Note: Use #0 for GLOBAL to address all AMA mini players.
3:BBBBB, this part is for the actual RS485 command.
4:E is the end command mark. The hex value is 0x0d, 0x24($) or 0x0a. You can use any of the above hex value
to end a command.
Example: #0:1$ , means all board (global) play input 1.
Or #02:8$ , means board #2 play input 8.
The following are RS485 examples using #0 GLOBAL address and end the commands with $ (0x24).
Play input (of the autoplay.txt):
#0:1$ ..... play input 1 as written in the autoplay.txt.
REBOOT AMA Mini: #0:RESET$ ... Reboot all AMA mini.
Other standard commands (identical to IR remote control):
#1:VOL+$, #1:VOL-$, #1:STOP$, #1:PLAY$,
#1:PRE$ #1:NEXT$, #1:POWER$ and #1:PAUSE$
SET BOARD ADDRESS USING RS485 commands:
12Vdc
TX-/TX+ jumpers
To prevent accidental
shorting, do not install
this jumper if you are
not using the 12Vdc
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