Symbol MC9000-K/S, Reference Manual

Page: 501 / 750

Accessories 12-57
The format of Basic Syntax commands, except for the D and S commands, is as follows:
<command>[<number>]
where:
• <command> is either a single character, or the “&” character followed by a single character
per V.250; or the “%” character followed by a single character, the “*” character followed
by a single character, or the “^” character followed by a single character.
• <number> is a string of one or more characters from “0” through “9” representing a decimal
integer value. Commands expecting a <number> are noted in the description of the
command. If <number> is missing from such a command (<command> is immediately
followed by another <command> or the termination character), the value “0” is assumed. If
a command does not expect a <number> and a number is present, an error occurs. All
leading “0”s in <number> are ignored by the modem.
Additional commands may follow a command (and associated parameter, if any) on the same
command line with a separation character. The actions of some commands cause the rest of the
command line to be ignored.
S-Parameters
Commands that begin with the letter “S” are known as “S-parameters”. The number following the
“S” indicates the “parameter number” referenced. If the number is not recognized as a valid
parameter number, an ERROR result code issues. Immediately following this number, either a “?” or
“=” character must appear. “?” is used to read the current value of the indicated S-parameter; “=”
sets the S-parameter to a new value.
S<parameter_number>?
S<parameter_number>=[<value>]
If the “=” is used, the new value to be stored in the S-parameter is specified in decimal following the
“=”. If no value is given (i.e., the end of the command line occurs or the next command follows
immediately), the S-parameter specified may be set to 0, or an ERROR result code issues and the
stored value remains. The ranges of acceptable values are given in the description of each S-
parameter.
If the “?” is used, the modem transmits a single line of information text to the DTE. The text portion
of this information text consists of exactly three characters, giving the value of the S-parameter in
decimal, with leading zeroes included.