Campbell Scientific PWS100 Present Weather Sensor - Manual (Page 79)

Section 7. Operation
Currently three other sensors can be connected to the PWS100. The sensor
configured is changed by parameters TRH_Sensor (Temperature and RH%),
Wetness_Sensor and Aux_Sensor. Section 8 gives further details of how to
connect optional sensors. Table 7-5 gives the IDs of various sensors. To add
these to the system put the appropriate sensor ID to the appropriate sensor
parameter.
TABLE 7-5. Detectable sensors.
ID Sensor Type
0 No Sensor
1 CS-215 Temperature RH%
2 CS-xxx Wetness Grid
3-99 Reserved for future use
The Hood_Set value sets the temperature at which the hood heaters are set to
function at and can be set to 0 (off) or a temperature between 10 and 50
°C. The
Dew_Set value value sets the temperature at which the internal dew heaters are
set to function at and can be 0 (off), 1 (on) or 2 (auto).
The Output_Mode value relates to the use of packetized output. The message
framing is done by STX and ETX (start and end) delimiters. The Output_Mode
values available are 0 = No STX / ETX or 1 = STX / ETX. The default is 1 =
Send STX / ETX. The use of STX and ETX is mainly used in multidrop
systems with many sensors on one RS-485 bus or to aid software development.
7.8 Maintenance Commands
7.8.1 Loading a New OS
A new OS can be loaded into the PWS100. A new OS may be developed and
provided by Campbell Scientific to improve the functionality of the system.
The system will check that the OS loaded is valid, however the user should
ensure that the OS is the latest OS provided by Campbell Scientific.
Save the relevant new OS file provided by Campbell Scientific in a known
directory on the PC used for communications to the PWS100.
A new operating system can be loaded with the Present Weather Viewer
program using the option in the tools menu (see the help system) or it can be
loaded using Hyperterminal as described below.
With the PWS100 then connected to this PC and Terminal running as described
in Section 7.3 use the following command to load a new OS:
LOADOS ↵
The system will now respond by attempting to upload the new OS using
Xmodem. Select ‘Transfer’ on the pull down menu and then select ‘Send File’.
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