RS-232 connection via computer terminal software
Computer terminal software can be used to communicate with the CS451/CS456 via the RS‑232 communication mode.
The CS451/CS456 is connected to the computer using the A200 (see Computer connection using the A200).
Upon setup, the terminal emulator software will request you enter the Communication connection; defaults to a phone connection. Change the communication to appropriate Com in the Connect Using box (see Determining which COM port the A200 has been assigned to determine the COM port that was assigned to the A200). The software will then prompt for the proper Port Settings. RS-232 settings shows the RS-232 settings.
|
Bits per second |
9600 |
|
Data bits |
8 |
|
Parity |
None |
|
Stop bits |
1 |
|
Flow control |
None |
You will now be able to communicate with the CS451/CS456. At the prompt, press the <Enter> key several times. This will wake-up the RS-232 mode of the sensor. RS-232 terminal commands shows the RS‑232 commands that can be entered once it is in the RS-232 mode.
By default, the CS451/CS456 is in the SDI-12 mode for communication. Once in the RS‑232 mode, if there is no communication for 20 s, the sensor will return to the SDI-12 mode.
|
Terminal commands |
Values returned |
|---|---|
|
1 |
Serial number, pressure/level, temperature (in configured units) |
|
2 |
Serial number, pressure (kPa), temperature (°C) |
|
3 |
Serial number, DR(ohms), Rb(ohms), temperature (°C), element serial number, product name |
|
5 |
Copyright information, OS version and date, serial number, element serial number, product name, user defined name (station name), SDI-12 address |
|
H or h |
Help menu |