16-1
IM 765501-01E
Communication
Commands
3
2
1
6
5
4
9
8
7
12
11
10
15
14
13
18
17
16
16
Index
App
16.1.2 Messages
Messages
Messages are used to exchange information between
the controller and the instrument. Messages that are
sent from the controller to the instrument are called
program messages and messages that are sent back
from the instrument to the controller are called
response messages.
If a program message contains a message unit that
requests a response (a query), the instrument returns
a response message upon receiving the program
message. A single response message is always
returned in response to a single program message.
Program Messages
Data that is sent from the controller to the instrument
are called program messages. The program message
format is shown below.
<PMT>
;
<Program message unit>
<Program Message Unit>
A program message consists of one or more program
message units; each unit corresponds to one
command. The instrument executes the received
commands in order.
Each program message unit is separated by a
semicolon (
;
).
For details regarding the format of the program
message unit, see the next section.
Example:
Unit
Unit
:MEASURE:FUNCTION DTOC;SPEED 1.0<PMT>
16.1.1 Symbols Used in the Syntax
Symbols which are used in the syntax descriptions in
section 16.2 are shown below. For details on the data,
see page 16-5.
Symbol Meaning
Example
|
Exclusive OR
SOURce:FUNCtion
VOLTage|CURRent
Example of Input
SOURce:FUNCTION VOLTage
[]
Can be omitted
OUTPut[:STATe]
•••
Can be repeated
Chapter 16 Communication Commands
16.1 Program Format