Standard Horizon GM29 manual ATcommandparameter

GM29 INTEGRATOR’S MANUAL

[ ]	Square brackets are used to indicate that a certain item
	is optional. For example, sub-parameters of a
	command or an optional part of a response. The
	brackets do not appear in the command line.
Value	The default values of the supported parameters are
	indicated by using bold text when presenting the
	value.

•Other characters, including ‘?’, ‘=’, parenthesis, etc., appear in commands and responses as written.

•The final result codes OK, ERROR, +CME ERROR: <err> and CMS ERROR:<err> (see sections 1.2.3, AT Response Syntax and 1.3, Error Codes) are not listed under “Possible Responses” for each AT command.

•OK and ERROR are listed if these are the only possible responses.

1.2.2AT Command Syntax

The AT standard is a line-oriented command language. Each command is made up of the following three elements:

•the prefix;

•the body;

•the termination character.

The prefix consists of the letters “AT”, which are derived from the first two letters of the word attention. The body is made up of the command, the parameter, and if applicable the associated values.

Commands may be combined in the same command line. Spaces between the individual bodies are ignored.

Basic Syntax Command

The format of basic syntax commands is as follows:

AT<command>[=][<parameter>]

Example! ATL=0<CR> (sets the volume of the speaker)

Additional commands may follow a command on the same command line without any character being required for separation. For the command D parameters, see the description for the command in question.

A version of the basic syntax is:

AT<command><parameter>

Extended Syntax Command

• AT+<command>= [<parameter>]

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