Zektor HDA800, User Manual

Page: 29 / 65

HDA800(V2) Serial Protocol, Version 1.3, 9/12/13
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Command Syntax
Command Syntax
Command Syntax
The HDA800(V2) serial command set uses an ASCII based protocol and a terminal emulator can be
used to test the serial port of the HDA800(V2).
Each serial command is formatted as:
^CMD param1,param2,...$
Where:
^
= All commands and responses start with the ‘^’ character.
CMD
= The name of the command.
param
= Any number of parameters can follow a command.
$
= All commands and responses end with the ‘$’ character.
For instance the name of the command to turn power on / off is ‘
P
’ (must be capitalized) therefore, to
turn on the HDA800(V2) send:
^P 1$ ->
Command sent to the A/V switch
^+$ <-
Acknowledgment indicating valid command
^=P 1$ <-
Response from the A/Vswitch for new setting
to turn off the HDA800(V2) send:
^P 0$ ->
Command sent to the A/V switch
^+$ <-
Acknowledgment indicating valid command
^=P 0$ <-
Response from the A/V switch for new setting
N
OTE
:
Only the characters between ‘^’ and ‘$’ are valid, any characters sent before the ‘^’ or after the ‘$’
will be ignored.
N
OTE
:
By default, the HDA800(V2) adds a carriage return and a line feed to the end of its responses, after
the ‘$’. This makes testing with terminal software easier. Since they are outside the ‘^’ and ‘$’ char-
acters, they should be ignored by software drivers. If desired, this behavior can be disabled. (See:
“‘XS’ Control Settings” on page 41)
Command Responses
Type of Responses and Timing Information
There are three different types of responses: Acknowledgements, Errors and Query Strings.
By default, the HDA800(V2) will always respond to a command, there are no “time-out” modes, if you
send a command and don’t get a response within 100ms, something’s wrong with the connection.
The Acknowledgement Response
Every command will be followed by an acknowledgement or error response.
Anytime you issue a command and there are no errors, you will receive the acknowledgement
response. Which is:
^+$