1 send data command – Campbell Scientific VSP3 Vosponder Voice Radio Interface User Manual
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Section 2. Programming the Datalogger
2-2
2.1 Send Data Command
The following example depicts an EDLOG program for a CSI datalogger that
sends the battery voltage, internal datalogger temperature, and the time to the
Vosponder. The Vosponder is assumed to have been set up with an SDI-12
address of 1 and the SDI-12 data line (white wire) to be wired into the
dataloggers control port 1 (C1).
Example 2-1. Program to send three data values to the Vosponder
*Table 1 Program
01: 10
Execution Interval(seconds)
1: Batt Voltage (P10)
1:
1
Loc [ BatVolts ]
2: Internal Temperature (P17)
1:
2
Loc [ IntTemp ]
3: Time (P18)
1:
1
Minutes into current day (maximum 1440)
2:
0
Mod/By
3:
3
Loc [ Time ]
4: SDI-12 Recorder (P105)
1:
1
SDI-12 Address; Vosponder SDI-12 Address
2:
0
Start Measurement (aM0!)
3:
1
Port ;Control Port C1
4:
1
Loc [ BatVolts ]
;Location of the first data point to be sent
5:
1.0
Mult
6:
0.0
Offset
5: Extended Parameters 4 Digit (P68)
1:
88
Option
;Send “X” to indicate an extended command
2:
68
Option
;Send “D” to indicate that data is to follow
3:
128
Option
;Send the first data value (BatVolts)
4:
128
Option
;Send the second data value (IntTemp)
5:
128
Option
;Send the third data value (Time)
6:
0000
Option
;End of command marker
7:
0000
Option
8:
0000
Option
The above program will issue the SDI-12 command “1XD” then transfer three
data values to the Vosponder. This will take place every execution interval
(i.e., ten seconds in our example).
IMPORTANT:
• It is critical that all of the data values you will be sending to the Vosponder
are in consecutive input locations.
• The position that follows the last 128 must have “0000” (zeros) in it. If
the eighth position in the P68 is filled with a 128, then you will need to
issue another P68 with just “0000” (zeros) in it.