Advertisement
Return from Multiviewer to PC
2.2
Data Packet
Value (hex)
0xA5
Packet Header
0x6C
Data Length
0x0000~0xFFFF
0x00~
Device Type
0xFF
Device ID
0x00~0xFF
Interface Type
0x00~0xFF
Reserve
0x00
Command
0x00~0xFF
Response
0x00 ~ 0xFF
Status
Response
Content
Checksum
0x0000~0xFFFF
Packet End
0xAE
Note: Send = CMD + data; Return = CMD + status+data
Part 3 Device Type and Command
3.1 Device type: 0xa1
3.2 Command List
Function
Scanning
Reading All the Data
Output Layout
Output Resolution
UMD Overlay Enable
Audio Meter Enable
Byte
2
2
1
1
1
9
1
1
Variable
length
2
1
Command (hex)
Description
Broadcast to scan the multiviewer from the LAN.
0xff
After device scanned, reading all status data of the device.
0x0a
Find out the device, read the status list of devices.
Change the output layouts.
0x33
Value refers to Part 3.3.2
Change the device output resolution.
0x19
Value refers to Part 3.3.3 Output Resolution List.
Turn on/off the UMD overlay.
0x5c
1: ON, 0: OFF
Turn on/off the audio meter.
0x5b
1: ON, 0: OFF
Description
The beginning of data packet.
The length of the entire data packet from packet
header to end (including the packet header and
end). The lower byte stays ahead.
Definition of device type, OXFF means broadcast.
A distinguishing of the device when there are
several devices in a same LAN at same time. OXFF
means broadcast.
0x00: UART (serial port); 0x01: LAN
Reserve.
Command for each function.
0x00: Succeed;
0x01: Error;
Other data undefined.
Reserve. The length of response content is variable
when backward reading command, and it is
consistent with the format of "packet data".
The algebraic sum of all bytes from packet header
to checksum (including the packet header and
checksum). Take 2 bytes, other parts omitted. The
lower byte stays ahead.
The end of the packet.
Output Layout List.
2
Advertisement
