Campbell CS451, Product Manual

Page: 49 / 52

E-1
Appendix E. 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 Section
8.1.1 , Computer Connection Using the A200
(p. 14)
).
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 Section
8.1.1.4 , Determining which COM Port the A200 has been Assigned
(p. 16)
, to
determine the COM port that was assigned to the A200). The software will
then prompt for the proper “Port Settings”. TABLE E-1 shows the RS-232
settings.
TABLE E-1. 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,
push the <Enter> key several times. This will wake-up the RS-232 mode of the
sensor. TABLE E-2 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.
NOTE