RS232 commands
* RS-232 transmission format:
Baud rate: 9600 bps
Data bit:
8 bits
Parity:
None
(A)Set command:
(B)Status commend:
(C)Appendix:
Check sum :
Check sum = (Data value sum)%256
0x01 ~ 0xFE: This data is device ID . The Device ID saved in the device , if the device ID of the controlled
device is 0xff , the device will ignore its own ID and carry out the commanded actions.
0xAC :
Bit 0: Channel 8 , Bit 1: Channel 7 , Bit 2: Channel 6 , Bit 3: Channel 5 , Bit 4: Channel 4 , Bit
5: Channel 3 , Bit 6: Channel 2 , Bit 7: Channel 1 [1/0 w/wo signals]
Command code
Response
Description
DATA
*CHECK SUM
ACK
SET
0x07 0x4d 0x41 0x51 0x44
0x05 *0x01~0xFE
0xa8
0xaa
SET AT-HD44M-SR DEVICE
ID
Command code
Response
Description
DATA
*CHECK
SUM
GET STATUS
*CHECK
SUM
STATUS
0x04 0x4d 0x4f
0x44
0xe4
0xaa 0x4d 0x41
0x51 0x44
0xcd
GET DEVICE TYPE (AT-
HD44M-SR)
0x06 0x4d 0x41
0x53 0x57 0x04
0x2d
0xaa 0x04
*0x01~0xFE
0xaf
GET AT-HD44M-SR
DEVICE ID
0x08 0x53 0x57
0x30 0x08
*0x01~0xFE 0x01
0x7a
0xaa 0x04
*0x01~0xFE
0xb0
GET AT-HD44M-SR
OUTPUT CHANNEL
10
11