Biamp A4 - Manual (Page 233)

System Control
*When GET is used, a Value will not need to be specified since GET is a request command. A
Value
must be set in order for SET, INC, DEC, and RECALL command strings to work.
Example: GET 4 MMLVLOUT 5 <LF>
We are asking the level of a matrix mixer’s output. There is no Value required for this string.
Responses
When a successful SET, SETL, INC, DEC, or RECALL command is sent to an Audia device via
RS-232 or Telnet, Audia will respond with: ‘+OK’ followed by a carriage return and line feed.
Example: Sending the string: SET 2 AMLVLIN 4 2 1 <LF> will result in an: +OK<CR><LF>
response.
A successful GET or GETL command will result in a numerical response to the command string
followed by <CR><LF>.
The response from an ATP string with a GET command may contain a decimal point (with 4
numbers after the decimal) and/or negative numbers, depending on type of Attribute addressed. If
the control system does not support negative numbers or decimal places a GETL command may
be used instead (see Command).
Example: After sending the above example to an Audia device the string:
GET 2 AMLVLIN 4 2 <LF> would result in the response: 1.0000 <CR><LF> this tells us that the
level is currently set to 1dB.
If an incorrect command string is sent, an Audia will respond with: -ERR<CR><LF>
A space normally proceeds the carriage return/line feed <CR><LF> in a response to a GET
command, but this space is not present in the standard ‘+OK’ or ‘-ERR’ responses.
Note: SETD, GETD, INCD, DECD, SETLD, and GETLD commands may be used when a "full
path" serial response to the command is desired. A ‘full path’ serial response will provide
identification of the target object, the original command, and the resulting Value. A "full path"
response to a valid command will always begin with a pound sign (#) and end normally (as
described above).
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