Campbell Scientific SDM-SIO4 4-Channel Serial I/O Interface User Manual
Page 55
Section 5. Programming the Datalogger
5-23
A5 – this filter sets up a 250ms filter time-out; this time-out should be long
enough for the sensor to transmit all of its data.
x – this filter marks the start of the data set. In this case the data set is two
floating point numbers.
f – this filter searches for the first ASCII floating point number to convert.
f – this filter searches for the second ASCII floating point number to convert.
*Table 1 Program
01: 2
Execution Interval (seconds)
;do filter set-up only if flag one is clear.
1: If Flag/Port (P91)
1:
21
Do if Flag 1 is Low
2:
30
Then Do
;set up string filter.
2: SDM-SIO4 (P113)
1:
1
Reps
2:
0
Address
3:
1
Send/Receive Port 1
4:
2054
Command
5:
9200
1st Parameters
6:
0
2nd Parameters
7:
0
Values per Rep
8:
0
Loc [ _________ ]
9:
1.0
Mult
10:
0.0
Offset
;delay required by filter set-up command.
3: Excitation with Delay (P22)
1:
1
Ex Channel
2:
0
Delay W/Ex (units = 0.01 sec)
3:
1
Delay After Ex (units = 0.01 sec)
4:
0
mV Excitation
;set flag one high so the filter set-up is only done once.
4: Do (P86)
1:
11
Set Flag 1 High
;end of IF.
5: End (P95)
;poll SDM-SIO4 to see if data is available.