Manual revision 013
Section 4: Deploying and Operating RS-232 SBE 38
SBE 38
17
Command Descriptions
This section describes commands and provides sample outputs. See
Appendix IV: RS-232 Command Summary
for a summarized command list.
When entering commands:
•
Input commands to the SBE 38 in upper or lower case letters and register
commands by pressing the Enter key.
•
The SBE 38 sends
? CMD
if an invalid command is entered.
•
If the system does not return an
S>
prompt after executing a command,
press the Enter key to get the
S>
prompt.
Status
Command
DS
Display status and setup parameters.
Equivalent to Status on Toolbar.
Description in example includes, where applicable,
command used to modify parameter.
Setup
Commands
Interface=x
x=232
: Set interface to RS-232.
x=485
: Set interface to RS-485. See
Appendix III:
RS-485 Interface
for
all
details.
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=
number of digits (0 – 6) to right of decimal point
for converted temperature (°C). Applicable only if
Format=C
.
NAvg=x
x=
number of A/D cycles to average per sample
(1 – 127).
Time between samples (seconds)
= (0.133 *
NAvg
) + 0.339
(Time between samples for continuous sampling;
minimum time required for each polled sample.)
AutoRun=x
x=N
: Wait for a command when power is applied.
x=Y
: Start continuous sampling automatically when
power is applied.
Example:
(user input in bold).
S>
DS
SBE 38 V 1.4 S/N = 0090
(firmware version, serial number)
NAVG=1
(number of A/D cycles to average for each sample [
NAvg=
])
Not sampling data
(sampling status)
Automatically start sampling on power up
(sampling start-up mode [
AutoRun=
])
Default interface is RS-232
(RS-232 or RS-485 interface [
Interface=
])
Note:
If the voltage is below 6.5 volts, the
following displays in response to
DS
:
WARNING: LOW BATTERY VOLTAGE!!
Note:
The SBE 38’s baud (set with
Baud=
)
must be the same as SEATERM’s
baud rate (set in Configure menu).
Note:
After you send
AutoRun=Y
, to start
sampling immediately:
•
Turn power off and then on again, or
•
Send
Go
.
Notes:
•
The SBE 38 transmits data
after
it
has completed the previous sample
and before it starts the next sample.
•
For continuous sampling with an
RS-485 interface, set
NAvg
> 30.
See
Appendix III: RS-485 Interface
.
21
Summary of Contents for SBE 38
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