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UDM Hub Control Protocol
Unlock Port
Unlocks the port (or range of ports) specified by the Port property, or if non zero, the port specified in the
command, so that selected inputs on that port may be changed.
Byte #
Byte value
Return Status:
Byte #
Byte value
Query Port
Queries a particular port for connection and status information. The command returns the currently connected
input, and information in the flags byte about current connection status.
Byte #
Byte value
Return Status:
Byte #
Byte value
The Flags byte contains additional information about the input selected, defined as follows:
Flag bit
1
2
Get Port or Input Name
Retrieves a string identifier from the port specified. Sub port should be specified if the port type is an Input
port as input sub ports may have different names.
Byte #
Byte value
The Port Type parameter can take the following values:
Value
1
2
3
4
Return Status:
Byte #
Byte value
Get Receiver Info
Retrieves information about the connected receiver on a port.
Byte #
Byte value
Return Status:
Byte #
Byte value
112
0
1
3
User Defined
Port
0
1
2
3
User Defined
Port
0
1
12
User Defined
Port
0
1
2
12
Status
Port
Description if set
Port input selection is locked
Port link disconnected
0
1
79
User Defined
Port
Description
Output port
Video input port
Audio input port
Device
0
1
2
3
79
Status
Port
Sub Port
0
1
88
User Defined
Port
0
1
88
Status
2
3
User Defined
3
User Defined
User Defined
2
3
User Defined
3
Input
User Defined
Description if clear
Port input selection is unlocked
Port link connected
2
3
Sub Port
4
5
Port Type
User Defined
2
3
User Defined
2
3
Port
User Defined
UDM-0404 4x4 Multi-Format Distribution Hub
4
5
User Defined
User Defined
4
5
User Defined
4
5
User Defined
User Defined
4
5
Flags
4
5
Port Type
User Defined
6
7..7+length
Name Length
Name String
4
5
User Defined
User Defined
4..n
Parameter block
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