User guide

4-2
M-4662
Query
• A question mark is used to specify a query.
• You can insert a question mark after a command or parameter to query the
corresponding command setting. Queries are not allowed on some commands. For
the query syntax of each command, see sections 4.4 to 4.7.
Example1
SR[ p1]?
You can execute SR? or SRp1?.
Example2
SA[ p1[,p2]]?
You can execute
SA?
,
SAp1?
, and
SAp1,p2?
.
Delimiter
• A comma is used as a delimiter.
• Separate each parameter with a delimiter.
SubDelimiter
• A semicolon is used as a sub delimiter.
• You can specify up to 10 commands consecutively by separating each command with
a sub delimiter. However, you cannot do this with the commands listed below and all
queries. Specify them independently.
• Output commands other than
BO
,
CS
, and
IF
• Queries
* If there are consecutive sub delimiters, they are considered to be one. Sub delimiters at the
front and at the end of a command sequence are ignored.
Example
;SR001,VOLT;;;SR002,VOLT;
<terminator> is interpreted as
SR001,VOLT;S
R002,VOLT
<terminator>.
Terminator
Use either of the following for the terminator.
• CR+ LF (
0DH 0AH
in ASCII code)
• LF (
0AH
in ASCII code)
Note
• Do not specify a channel or relay number that is not available on the MV. If you do, an error
will occur.
• The total data length from the first character to the terminator must be less than 2048 bytes.
• Commands are not case-sensitive except for user-specified character strings.
• All commands that are listed with sub delimiters are executed even if any of the commands
is in error.
• Spaces that are inserted before and after a parameter are ignored. However, if spaces are
inserted before a command, after a sub delimiter, or after a query, an error will occur.
Response
The MV returns a response (affirmative/negative response) to a command that is
delimited by a terminator.
*
The controller should follow the one command to one
response format. If the command-response rule is not observed, the operation is not
guaranteed. For the response syntax, see section 5.1.
• RS-422/485 commands (see section 4.9) and instrument information output commands
(section 4.12) are exceptions.
4.1CommandSyntax