Campbell CS120A, User Manual

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User Guide
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The program includes online help instructions that describe its general use with
the CS120A and also how to load an operating system.
The Device Configurator can also be used as a terminal emulator to use the built-
in menu system of the CS120A and to access its calibration menu.
Note that the CS120A is listed on DevConfig as a different sensor to the CS120. If
only the CS120 is listed then you should update your version of Devconfig. This
is available free on the Campbell Scientific website. If this is not possible, please
contact Campbell Scientific.
The second method is by using the command line interface where discrete
commands are sent without response from the sensor. This would be the preferred
method of setting up a CS120A if it was connected to a logger for instance. The
configuration setting commands can be sent via a logger to the CS120A removing
the need for a local PC to set up the unit.
The third method is by using the simple menu interface built into the CS120A
communicating via RS232 or RS485, using a terminal emulator program. This
menu system gives access to the more common settings.
All three of these methods use the CS120As serial port A to communicate with the
sensor. Configuration cable part number 010817, described in Section 8.1 can be
used.
11.1 Configuring a PC for talking to the CS120A
Described below is the procedure for setting up communications using a terminal
emulator program. The terminal emulators built into many Campbell Scientific
software products can also be used.
The following settings should then be used by default:
Bits per second: 38400
Data bits: 8
Parity: none
Stop bits: 1
Flow control: none
Ensure that if the baud rate of the unit has been adjusted and then the
corresponding bits per second value is entered in the port settings of the terminal
emulator. The CS120A should now be ready to accept commands.
It is possible to set the CS120A into the default communication state via one of
the internal switches on the CS120A main board. See Section 9.