Campbell-scientific CS451/CS456 Pressure Transducer Bedienungsanleitung PDF herunterladen (Seite 45)

Appendix E. RS-232 Connection Via PC

Terminal Software

PC terminal software can be used to communicate with the CS451/CS456 via

the RS-232 communication mode (see FIGURE E-1).

The CS451/CS456 is connected to the PC via the A200 (see Section 8.1.1, PC

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 Section

8.1.1.4, 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”. 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

E-1

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Campbell-scientific CS451/CS456 Pressure Transducer Bedienungsanleitung Seite 45