Atlona AT-SDI81 user manual RS232 Commands, Ack, Data Check SUM ACK SET

RS232 COMMANDS

RS-232 transmission format:

Baud rate : 115200 bps

Data bit : 8 bits

Parity : None

ASCII Command Mode

Command	ACK	Description
VR	V2.01a	Read Version V2.01a [Firmware Version]
I1~8		Input Select ( AT-SDI81 & AT-SDI82M [1~8]; AT-SDI51 &
		AT-SDI52M [1~5])
ST	OUTPUT1	Read Selected Source OUTPUT1
		Input one selected ( AT-SDI81 & AT-SDI82M [1~8]; AT-SDI51 &
		AT-SDI52M [1~5])

Serial String Mode

Format:

First byte	Transmission data amount [from first byte to last byte]
0x53	Check code
0x57	Check code
0x30	Check code
0x88	Check code
0xff	*Machine Number
0x01	Command ID
....	Command Parameters
Last byte…	Check sum [Add from first byte to command Parameters]

Note : If send Machine Number as 0xFF, All switch can receive the command,otherwise the machine number must be the same as the Switcher

(a)Set command :

Command code		Response	Description
DATA	*CHECK SUM	ACK	SET
0x09 0x53 0x57 0x30 0x08	0xed~0xf4	0xaa	Select input Source
0xff 0x02 0x01~0x08		0x03	0x09: Command Length
		0x01	0x53 0x57 0x30 0x08: Check Code
		0x04	0xff :Machine number
			0x02: Command ID
			0x01~0x08: Input Source
			( AT-SDI81 & AT-SDI82M [0x01~0x08];
			AT-SDI51 & AT-SDI52M [0x01~0x05])
			0xed~0xf4: Check sum
			Ack
			0xaa: Header
			0x03: Command length
			0x01: Selected source
			0x04: Check Sum

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