AMX Endeleo Multi-Format Receiver UDM-RX02, Руководство по эксплуатации/справочник

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UDM-0102 Control Protocol
81 UDM-0102 and UDM-RX02 Operation/Reference Guide
UDM-0102 Control Protocol
Overview
The Universal Distribution Matrix (UDM) Hub often forms part of a larger system where control of switching
and management functions is provided by an external system (i.e. a NetLinx Controller).
This document describes the protocol for communications between an external controller and the hubs using
either a 10BaseT network connection or a SLIP encapsulated serial stream to the RS232 port.
The UDM Hub communicates over a 10BaseT connection using UDP packets or over a serial link using UDP
packets encapsulated using SLIP. In both these cases, the UDM Hub accepts a set of command and data values
to carry out various actions, which are detailed in this document. These command and data values are
encapsulated in a frame for transmission from the host to the Hub. In most cases this encapsulation will be
provided by the host software, but in the case of simple SLIP commands, it might have to be supplied by the
customer software or driver.
Command Format
UDM commands consist of a command value, together with a number of relevant parameters (normally 6
bytes in total) which are transmitted to the Hub, generally described as follows:
The data packet returned by any command may be longer than described – any additional data in a packet may
be ignored.
Command and Reply Example - Port Connection
Command values differ for each command as do the values and length of the accompanying data.
For example, to connect port 1 to VGA input 2 on the UDM the command format is as follows
So the data values which must be sent to the Hub would be:
Unless otherwise specified, all data and command values are shown in decimal
(base 10).
Byte # 0 1 2 3 4 5 6...n
Byte value Command
value
User
defined
Data value 1 Data value 2 Data value 3 Data value 4 Other data for
some commands
Byte # 0 1 2 3 4 5
Byte value 1 User defined Port Input Sub input Input type
Byte # Value Description
0 1 Command value for Connect Input to Port
1 0 User defined - can be any value - this first byte is normally replaced in the reply with a Status
value, other User defined values are just returned unaltered in the reply from the Hub and can
be used for checking etc
2 1 Port number
3 2 Input number
4 1 Sub input number (for a VGA input all sub inputs are used in the connection so this value is not
used - it is only important when specifying connections for composite input types)
5 0 VGA type (other types are listed in the command description later in the document)