4230 Flow Meter
Section 2 Programming
2-22
with the appropriate ASCII output string. You can send the
DATA command as often as you want. Type ‘Q’ to leave the
command response interface.
In addition to the port values, the data includes the flow meter’s
current time, the bottle number and time stamp of the three
most recent sample events, the previous day’s rainfall total (mid-
night to midnight), the current day’s rainfall total since mid-
night, and a rainfall tips counter that rolls over every 255 tips.
(See Rain Gauge, page 4-8.) The port values appear in a
comma-separated values format. Each data field is preceded by a
two or three-character type identifier. The table lists the type
identifiers. The flow meter’s current time and the sample event
time stamp appear as a number in standard spreadsheet format
(days since 1900). The supported baud rates are 9600, 4800,
2400, and 1200 (no parity, eight bits and one stop bit).
Periodic Output: (Use a special RAIN GAUGE connector
cable—contact the factory for assistance.) Note that the periodic
output will terminate during phone connection and when the
interrogator cable is connected.
CAUTION
It is important to use CHECKSUM if you plan to use internal
modems or the interrogator. The UART is shared with these
devices.
If you select SERIAL OUTPUT from the OPTIONAL OUTPUTS
menu, the following display will appear:
Selection of OFF from this menu will disable this feature, and
there will be no further references to it.
The Serial Output data appears on the Interrogator connector of
the flow meter. You should not use a standard interrogator cable
for this application, as the sense line in the standard cable is
shorted to ground.
Selection of ON from this menu will enable the feature and cause
the following display to appear:
After you select the appropriate baud rate, the program will
advance to the following menu:
This menu lets you select how often the flow meter transmits the
ASCII text string.
Following is an example of a string showing all options:
DE,TheresaStreet,ID,0721577657,MO,4250,TI,35317.343715,BV,12.3,LE,0.1000,VE,0.1225,FL,0.001
555,VO,2.199325,FV,2.199325,RV,0.000000,SV,2.195539,SS,1,B0,35317.307384,B0,35317.269907,B0,
35317.232593,CS,10819
PERIODIC SERIAL OUTPUT
• ON • • OFF
SELECT BAUD RATE (N81)
• 9600 • • 4800 • • 2400 • • 1200 •
SERIAL OUTPUT INTERVAL
• 15 SEC • • 1 MIN • • 5 MIN • • 15 MIN •
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