Before Programming
1
2
3
4
5
6
7
App
Index
5-5
IM WT3001E-17EN
5.3 Responses
When the controller sends a message unit that has a
question mark (
?
) in its program header (query), the
instrument returns a response message to the query. A
response message is returned in one of the following
two forms.
• Response Consisting of a Header and Data
If the response can be used as a program message
without any change, it is returned with a command
header attached.
Example
:DISPlay:MODE?<PMT> ->
:DISPLAY:MODE WAVE<RMT>
• Response Consisting of Data Only
If the response cannot be used as a program
message unless changes are made to it (query-
only command), only the data section is returned.
However, there are query-only commands that
return responses with the header attached.
Example
[:INPut]:POVer?<PMT> -> 0<RMT>
When You Wish to Return a Response without a
Header
Responses that return both header and data can
be set so that only the data section is returned. The
“
COMMunicate:HEADer
” command is used to do this.
Abbreviated Form
Normally, the lower-case section is removed from a
response header before the response is returned to
the controller. Naturally, the full form of the header can
also be used. For this, the “
COMMunicate:VERBose
”
command is used. The sections enclosed by braces
(
[]
) are also omitted in the abbreviated form.