AVProConnect AC-MXMV122-UHD Руководство пользователя - Страница 8

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AC-MXMV122-UHD
AC-MXMV122-UHD UART COMMANDS
UART SETTING
115200 bps, 8 data bits, no parity, 1 stop bit, no flow control.

Command format

Header
Value
AA/AB
Device
ID
Byte
1
2 (LSB
Count
first)
Note:
(1)
Each AC-MXMV122-UHD in a cascaded system must be assigned a unique two byte address. The first
byte is the Group Address, the second byte is the Device Address. The two values 0x00 and 0xff are
invalid for both the Group Address and the Device Address respectively.
(2)
The default Device ID is 0002H.
(3)
All data values are transmitted in HEX mode.
(4)
The checksum value is the negated sum of all values before the Checksum field.
The first byte of the header denotes the type of data: AAH for a command to the AC-MXMV122-UHD, or ABH for a reply
from the AC-MXMV122-UHD.
The next two header bytes are the device ID where:
The following table lists the ID values that should only be used for the described purpose:
Group Addr
Device addr
00H
FFH
XXH
FFH
FFH
FFH
00H
00H
XXH
00H
FFH
00H
00H
XXH
FFH
XXH
XXH
YYH
AVProConnect ~ 3518 N Casco Ave. Sioux Falls, SD 57104~ 1.877.886.5112 ~ +1.605.274.6055 ~
Length
Number of all bytes after this
parameter,
including
the
checksum
2 (LSB first)
Table 1 - Command Format
XX: is in the range 01H~FEH, and YY: is in the range 01H~FEH
Description
Invalid
Broadcast to all the devices with the group address of XXH
Broadcast to all devices
Broadcast to all devices
Broadcast to all the devices with the group address of XXH
Invalid
Invalid
Invalid
Send data to the device with the address XXYYH
Table 2 - Addressing the AC-MXMX122-UHD
Group
Device
address
address
See
See
note(1)
note(1)
1
1
pg. 8
Key
Parameter
word
See
Based on the
note(2)
keyword
2 (LSB
Based on the
first)
parameter
Reply From
No reply
No reply
No reply
All devices
All in group
No reply
No reply
No reply
One device
Check
sum
Check
sum
See
note (3)
1