Promax GR-205 Manuel D'instructions page 73

USER'S MANUAL. GR-205
12H Listen Address followed by an address not belonging to this instrument.
14H Talk Address for any instrument.
03H Universal Unaddress control code.
04H Lock Non-Addressable mode control code.
18H Universal Device Clear.
Before a response can be read from an instrument it must be addressed to talk
by sending the Talk Address control code, 14H, followed by a single character which
has the lower 5 bits corresponding to the unique address of the required instrument, as
for the listen address control code above. Once addressed to talk the instrument will
send the response message it has available, if any, and then exit the talk addressed
state. Only one response message will be sent each time the instrument is addressed
to talk.
Talk mode will be cancelled by any of the following interface control codes
being received:
12H Listen Address for any instrument.
14H Talk Address followed by an address not belonging to this instrument.
03H Universal Unaddress control code.
04H Lock Non-Addressable mode control code.
18H Universal Device Clear.
Talk mode will also be cancelled when the instrument has completed sending a
response message or has nothing to say.
The interface code 0AH (LF) is the universal command and response
terminator; it must be the last code sent in all commands and will be the last code sent
in all responses.
The interface code 0DH (CR) may be used as required to aid the formatting of
commands; it will be ignored by all instruments. Most instruments will terminate
responses with CR followed by LF.
The interface code 13H (XOFF) may be sent at any time by a listener
(instrument or controller) to suspend the output of a talker. The listener must send 11H
(XON) before the talker will resume sending. This is the only form of handshake control
supported by ARC.
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