Sea-Bird Electronics SBE 38, Руководство пользователя, Страница: 42 / 69

Reference Sheet Version #004, 03-23-11; Firmware Version 1.4 and later 2
Command Instructions and List
• Input commands to SBE 38 in upper or lower case letters and register commands by pressing the Enter key.
• SBE 38 sends ?CMD if invalid command is entered.
• If system does not return S> prompt after executing a command, press Enter key to get S> prompt.
Shown below are the commands. See the Manual for detailed descriptions and examples.
RS-232 Commands
CATEGORY COMMAND DESCRIPTION
Status DS Display status.
Setup
Interface=x
x=232 : RS-232 interface.
x=485 : RS-485 interface.
Baud=x x= baud rate (1200, 2400, 4800, 9600). Default 9600.
Format=x
x=C
: Output converted data (°C).
x=R : Output raw data (counts).
Digits=x
x= digits (0 – 6) to right of decimal point for converted temperature (°C).
NAvg=x
x=
A/D cycles to average per sample (1 – 127).
AutoRun=x
x=N : Wait for a command when power applied.
x=Y : Start continuous sampling automatically when power applied.
Sampling
Go Start continuous sampling now.
Stop Stop continuous sampling. Press Enter key to get
S>
prompt before entering command.
TS Take 1 sample and transmit data.
TH Take 1 sample and hold data in buffer.
SH Transmit data that was held in buffer.
SL Transmit data from last sample from buffer.
SLT
Transmit data from last sample from buffer, and then take 1 new sample and hold data in buffer.
Coefficients
DC Display calibration coefficients.
CalDate=S S= Temperature calibration date.
A0=F F= Temperature A0.
A1=F
F=
Temperature A1.
A2=F F= Temperature A2.
A3=F F= Temperature A3.
Slope=F
F= Temperature slope (default = 1.0).
Offset=F
F=
Temperature offset (°C) (default = 0.0).
RS-485 Commands
• See RS-232 Commands above for status, setup, sampling, and coefficients commands.
• If IDReq=Y , precede all above commands with #ii (ii = 0 – 99) to direct command to particular SBE 38.
If #iiIDReq=N , do not precede above commands with #ii (applies only for a system with 1 SBE 38).
• For reliable operation, all commands may need to be preceded with two
@
characters to clear buffers.
• RS-485 interface cannot accommodate multiple instruments transmitting real-time data at same time. Therefore, do not set
AutoRun=Y (start sampling continuously when power is applied) for system with more than 1 RS-485 instrument on pair of
wires. Similarly, do not attempt to send
Go
command to multiple SBE 38s on pair of wires, as system cannot transmit command
to 1 instrument while another instrument is transmitting real-time data.
• If planning to sample continuously ( AutoRun=Y or using Go to start sampling), set NAvg >30 (A/D cycles to average/sample).
CATEGORY COMMAND DESCRIPTION
Global
TxDelay=x
x= delay after SBE 38 transmits a reply until SBE 38 transmitter is disabled
(1 – 500 milliseconds). Default 25 milliseconds.
RxDelay=x
x= delay after SBE 38 receives a command until SBE 38 transmitter is enabled
(1 – 500 milliseconds). Default 25 milliseconds.
GData or
AData
Command all SBE 38s to take 1 sample and hold data in SBE 38 buffer until receiving:
DATAii ; SH , SL , or SLT (if IDReq=N ); or #iiSH , #iiSL , or #iiSLT (if IDReq=Y ).
Get Data DATAii Get data obtained with
GDATA
or
ADATA
from SBE 38 with ID = ii (ii = 0 -99).
ID Required
IDReq=Y Precede commands to individual SBE 38s with #ii , where ii= ID (ii = 0 -99).
#iiIDReq=N Do not precede commands to individual SBE 38s with #ii .
ID
(only 1 SBE 38
can be online
when sending
these commands)
ID?
Display SBE 38 ID (ID = ii, where ii= 0-99) and whether ID is required as a prefix for
commands (see IDReq= ).
*ID=ii
Set SBE 38 ID to ii, where ii= 0-99. This command must be sent twice, because the computer
requests verification. If more than one RS-485 instrument is online when sending this
command, all instruments online will be set to same ID .
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