inTest THERMOSTREAM ATS-515, Интерфейс и руководство по приложениям

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4
R E M O T E I N T E R F A C E S
Command Processing Overview
4-4 ATS-515, -525 & ATS-615 & -625 Interface & Applications Manual
Section C:
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Command Processing
Command Processing Overview
• The System reads the message into a buffer until a Line Feed <LF> is received (or in
GPIB mode, the EOI line is set).
• After the <LF> (or EOI) is received, the System begins to process the commands/queries
in the message.
• The System continues until all of the commands/queries in the message string are pro-
cessed.
• During processing of the message, the System will not transmit data. In GPIB mode, the
GPIB hardware handshake lines prevents new data from being received. In Serial mode,
because there is no hardware handshaking, new data will be received into the input buffer
but will not be acted upon until processing of the current message is completed.
• When the entire message string has been processed, the System transmits the response(s)
(separated by semicolons if there was more than one query message unit in the string) to
any queries.
• A GPIB bus or Serial Interface timeout interval of 3 seconds is recommended.
• All commands/queries in multiple-command messages are processed sequentially. All
program messages are processed sequentially.
• Multiple command messages must be less than 250 characters long, including the <LF>.