GHM Delta OHM LPPYRA13, Руководство по эксплуатации

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LPPYRA13
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V2.3
7 SDI-12 OUTPUT
The LPPYRA13S12 pyranometers are compatible with version 1.3 of SDI-12 protocol.
The protocol communication parameters are: Baud rate = 1200. Data bits = 7, Parity
= Even, Stop bits = 1.
The communication with the instrument is performed by sending a command in the
following form:
<Address><Command>!
with <Address> = address of the instrument the command is sent to
<Command> = type of operation requested to the instrument
The instrument reply is as follows:
<Address><Data><CR><LF>
with <Address> = address of the instrument which replies
<Data> = information sent by the instrument
<CR> = ASCII character Carriage Return
<LF> = ASCII character Line Feed
The sensors come with a factory address preset to 0. The address can be modified by
using the proper SDI-12 command reported in the following table.
The following table reports the SDI-12 commands available. For consistency with SDI-
12 standard documentation, the instrument address is indicated in the table with the
letter a.
SDI-12 Commands
Command Instrument reply Description
a! a<CR><LF> Verifies the presence of the
instrument.
aI! allccccccccmmmmmmvvvssssssss<CR><LF>
with:
a = address of the instrument (1 character)
ll = SDI-12 compliant version (2 characters)
cccccccc = manufacturer (8 characters)
mmmmmm = instrument model (6 characters)
vvv = firmware version (3 characters)
ssssssss = serial number (8 characters)
⇒
Example of response:
013DeltaOhmLP-PYRA0016051518
with:
0 = instrument address
13 = SDI-12 version 1.3 compliant
DeltaOhm = manufacturer’s name
LP-PYR = instrument model
A00 = firmware version A.0.0
16051518 = serial number
Requests for information
from the instrument.
aAb!
Where:
b = new
address
b<CR><LF>
Note: if the b character is not an acceptable ad-
dress, the instrument responds with a instead of b.
Modification of the instru-
ment address.