4.5 Communication Methods
24
Various messages are supported for controlling the instrument through the interfaces.
Messages can be either program messages, sent from the controller such as PC to the
instrument, or response messages, sent from the instrument to the controller.
Program Messages
1. Command Messages and Query Messages
(1) Command Messages
Commands that control the instrument, for example to configure settings or reset
the device.
(2) Query Messages
Requests for responses relating to results of operation or measurement, or the
state of instrument settings.
Query commands end with a question (
?
) mark.
2. Message delimiter (terminator)
This instrument recognizes the following input message delimiters:
CR+LR with EOI
LF with EOI
CR with EOI
EOI
CR+LF
LF
Response Messages
1. Response Messages
When a query message is received, its syntax is checked and a response mes-
sage is generated.
2. Message delimiter (terminator)
The following three response message delimiters can be specified with the
“
DLM
” command:
LF (initial setting)
CR+LF
EOI
4.5 Communication Methods
Program Messages
Response Messages
SM7810
SM7810-20
Program Messages
Messages
Command Message
Query Message
Response Message
Controller
Message types are further categorized as follows
When issuing commands that contain data, make certain that the data is provided in the specified format.
Summary of Contents for SM7810
Page 19: ...2 5 Turning the Power On and Off 16 ...
Page 51: ...5 3 Internal Circuitry 48 ...
Page 65: ...7 4 Cleaning 62 ...