|
|
|
Vegetronix SDI-12
to RS232 Translator
| Quickly turn your PC or modem into a SDI-12 compliant
data logger, with the Vegetronix SDI-12 RS232 translator board.
The translator will connect to your PC or
modem through
a RS232 interface, and allow you to communicate with SDI-12 compliant
sensors with simple serial commands.
You can
use any serial port communication program such as the HyperTerminal
program which is installed on all Windows platforms, to communicate
with the device through a command line interface. You can also
write your own software programs to communicate with the translator
board, and merely need to target a serial port.
The translator allows you to pass through
standard SDI-12 commands, or you can set up the on-board scheduler, and it
will retrieve data at specified intervals.
We also carry a SDI-12
to USB translator that you may also be interested in.
|
SDI-12 to RS232 Translator
|
Applications
- Ultra-fast prototyping of SDI-12 sensor networks.
- Replacement of expensive data loggers.
- Environmental/Weather monitoring.
- Control and monitoring of irrigation systems.
- SDI-12 testing of sensors.
- Remote SDI-12 monitoring of sensors through a
modem.
- Wireless access of SD-12 Sensors.
Features
- Affordable.
- Fully SDI-12 compliant.
- Sends SDI-12 commands and passes back the
responses.
- Uses standard RS232 12V voltage levels (not
TTL voltage levels).
- Low power.
- Can be used with any serial communication
program.
- Command line interface.
- Can interface with up to 62 SDI-12 sensors.
- 4 mounting holes in each corner.
Pricing and Ordering Info
For volume pricing Contact
us.
| ORDER INFO |
| Part Number |
Description |
Pricing |
Purchase |
| SDI-TRANS-RS232 |
SDI-12 to RS232 translator |
$99.95 |
|
Specifications
| Power consumption |
< 50mA |
| Supply Voltage |
6V to 40 VDC. |
| Dimensions |
1.5in x 2.0in |
| Supported number of sensor |
62 |
Other Vegetronix Products of Interest
Wiring Table
|
Terminal Block TB1 (SDI-12 INTERFACE) |
| Pin |
Description |
| 1 |
GROUND |
| 2 |
SDI-12 Bus |
|
Terminal Block TB2 (INPUT
POWER INTERFACE) |
| 1 |
GROUND |
| 2 |
+V in (6 to 40VDC) |
Commands
Open HyperTerminal - Normally under
Start/Programs/Accessories/Communications in Windows.
Set up the session for the appropriate
comm port. Set the comm port setting to: 9600 baud,
8-N-1. The easiest way to figure out, which comm port number the
board is being references as, is to plug it in and look at the list, then
remove it and see which comm port disappears from the list.
You can setup the board to act as a
data logger and to sample the various sensors at periodic times, by using
the "ADD" command, or you can use the transparent mode, and send
the sensors any SDI-12 text string that you desire. "<CR>"
as used below means carriage return with no line feed. Some communication software programs have an option
to automatically send a line feed with the carriage return. Make sure
this feature is disabled.
| Command |
Description |
| H |
Help - Lists all of the available
commands |
ADD [sensor number
(0-9)]:[Measurement number],
[sample period (in seconds, 0 for no sampling)],[use CRC (1:true/0:false)],
[Type (0:Normal,1:Concurrent,2:Continuous)]<CR> |
Add a sensor/measurement number to
the scheduler which periodically goes out and samples the specified
sensor and measurement. You can specify sample period, and type, and
if you want to use CRC.
Example: ADD 0:0,120,0,0<CR> - sensor
1 is sampled every 2 minutes without CRC. |
| DEL [sensor number
(0-9)]:[Measurement number]<CR> |
Remove a sensor/measurement from
the scheduler. |
| START<CR> |
Turn on the scheduler and begin
sampling for each sensor/measurement added using the ADD command. |
| STOP<CR> |
Turn off the scheduler and stop
sampling. |
| QUERY [sensor address (0-9)]:[Measurement number]<CR> |
Returns the information specified
by a particular ADD commands, and SDI ID string. |
| V<CR> - |
Returns the version Number of the
SDI RS232 Translator.(Current Version: V2.6) |
| READ [sensor address (0-9)]:[Measurement number]<CR> |
Perform immediate measurement. |
| TRANS [String]<CR> |
Transparently sends a string to SDI bus. |
| DATA [sensor number (0-9)]:[Measurement number]<SDI values> |
Response from logger to measurements. |
How to Get Started
The best way to get started is to order a few
translators and try them out in your application.
|
|
|
