PWS100 Present Weather Sensor - Campbell Scientific

Section 7. Operation
Note that user defined messages cannot make field references to other user
defined messages but can make reference to fixed messages from field 10 to 19
and all other message fields.
7.4.1.1 Message 0 (the Default Output)
User message 0 can be set by setting the Message Field parameters as required
using other message fields from 10 upwards.
By default and after a hardware reset (see Section 6.3.10, Load Factory
Defaults) or a software reset (see Section 7.9.2, Resetting the System) this
outputs the message fields below (in the format as seen in the interactive
menu). These fields have been used as defaults so they give a full display of
the PWS100’s capabilities when used with the Present Weather Sensor Viewer
program.
The user can delete and completely reconfigure this message as required.
(0) Message interval = 60 seconds
(1) Mode = Store and Output
(2) 49 Vis range Av (m) over 10 minutes
(3) 21 WMO code
(4) 22 Metar code
(5) 23 NWS code
(6) 24 Alarms
(7) 25 System fault status 0=pws_ok
1=degraded_performance 2=maintenance
(8) 30 Temp Av (C), RH Samp (%), Wetbulb Av (C)
(9) 31 Temp Max (C), Temp Min (C)
(10) 40 Precipitation Intensity (mm / hour)
(11) 41 Precipitation accumulation (mm)
(12) 42 Particle size distribution (300 values 0.1 to 30mm)
(13) 43 Particle Av velocity (m/s), Av size (mm)
(14) 44 Particle type distribution (fd, d, fr, r, sg,
sf, ip, h, g, e, u)
(15) 47 Size and velocity map Campbell 34x34
(16) 48 Ped ratio distribution (50 values 1.0 to 6.0)
(17) 156 Date (year, month, day)
(18) 157 Time (hours, minutes, seconds)
(19) 159 CRC16-CCITT
Note that in the default message, the start and end characters (STX/ETX) are
included in the message – see “Output options” described in Section 7.4.3.
7.4.1.2 Message Field 1 and 2 User Defined Message
These user messages are set in the same way as message 0 but are cleared and
do not output as default after a master reset.
7-9