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8.3 Interface Outline
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8.3.1 Features
8.3.2 Messages
Messages
Program messages
Response messages
Command messages
Query messages
Execution confirmation messages (RS-232C only)
8.3 Interface Outline
(1) In the HOLD state, single-shot measurement is possible.
(2) IEEE 488.2-1987 standard (essential) commands can be used.
(3) This unit can output manual, time interval and help output using the printer
mode.
Data received or sent by the interface is called a message. The following are
the message types:
Of these, program messages are those received by the unit from the
controller, while response messages are those sent from the unit to the
controller.
(1) Program messages
Program messages can be divided into either command messages or query
messages.
Command messages are orders for control of the unit, such as for making
settings or for reset or the like.
Query messages are orders for responses relating to results of operation,
results of measurement, or the state of device settings.
(2) Response messages
After a query message has been received, a response message is produced
the moment that its syntax has been checked. It is also possible to change
the message unit separator of response messages from the semicolon ";" to
the comma "," when headers are off, using the command
"TRANsmit:SEParator". Initially this separator is set to the semicolon ";".
A space is represented by "_" in this manual.
Headers on
"V_+101.02E+0;A_+10.200E+0"
Headers off
"+101.02E+0;+10.200E+0"
↓
Headers off
"+101.02E+0,+10.200E+0"
(3) Execution confirmation message
Execution confirmation message is the numeric data (ASCII) created by
analyzing and executing one line of data (data up to the terminator) from the
controller. This numeric data is returned to the controller. The controller and
this unit are synchronized by means of this data.
(Refer to Section 8.1.2, "RS-232C Interface".)
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