Solinst AquaVent SDI-12, Руководство пользователя

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SDI-12 User Guide for AquaVent
Page 13
5 SDI-12 Supported Commands
Please refer to the document: SDI-12: A Serial Digital Interface Standard for
Microprocessor-Based Sensors, Version 1.3, July 18, 2005 , prepared by the
SDI-12 Support Group (Technical Committee), for a complete description of the
SDI-12 protocol. (http://www.sdi-12.org/).
The following commands are supported:
5.1 Acknowledge Active Command: a!
This command is used to ensure that an AquaVent is responding to the SDI-
12 master. A typical command/reply would be: 0! 0<CR><LF> where the ‘0’s
represents the AquaVent SDI-12 device address and <CR> represents a carriage
return (Hex 0D) and <LF> represents a line feed (Hex 0A). All replies from an
AquaVent are terminated with <CR><LF>. All SDI-12 master commands are
terminated with an exclamation mark ‘!’ character.
5.2 Address Query Command: ?!
Using a question mark (?) as the address character causes the AquaVent to
respond with the acknowledge active ‘a!’ command where ‘a’ represents the
AquaVent address. A typical command/reply would be: ?! 0<CR><LF>. The
bold-faced characters are sent to the AquaVent; the normal type-face is the
AquaVent’s reply. In this case the AquaVent address is “0”. This command is
good for determining the AquaVent address, if it is the only datalogger connected
on the SDI-12 network.
5.3 Send Identification Command: aI!
AquaVent 5 Wellhead:
This command is used to query AquaVent Loggers for their SDI-12 compatibility
level, model number, and firmware version number. A typical command/reply
would be: 0I! 013SOLINST M20 V1 1.000 1017687<CR><LF> where
the first “0” is the AquaVent Logger address, “13” represents SDI-12 V1.3
protocol support, “SOLINST ” (8 characters) identifies the AquaVent Logger
manufacturer, “M20 ” (6 characters) defines the AquaVent Logger model
number, “V1 ” (3 characters) is the hardware identifier, “1.000” specifies the
current firmware version, and “1017687” represents the AquaVent Logger’s
serial number.
AquaVent Wellhead:
This command is used to query AquaVent loggers for their SDI-12 compatibility
level, model number, and firmware version number. A typical command/reply
would be: 0I! 013SOLINST M20 10 1.000 1017687<CR><LF> where
the first “0” is the AquaVent address, “13” represents SDI-12 V1.3 protocol
support, “SOLINST ” identifies the AquaVent manufacturer, “M20” defines
the AquaVent logger model number, “10” is the hardware identifier, “1.000”
specifies the current firmware version, and “1017687” represents the AquaVent
logger’s serial number.
NOTE
In all the following SDI-12
commands discussed,
‘
a
’
= the
SDI-12 device address assigned the
AquaVent,