Campbell Scientific SDM-SIO4 4-Channel Serial I/O Interface User Manual
Page 48
Section 5. Programming the Datalogger
5-16
*Table 1 Program
01: 2
Execution Interval (seconds)
;if flag one is not set then set up the serial mode and filter.
1: If Flag/Port (P91)
1:
21
Do if Flag 1 is Low
2:
30
Then Do
;set serial mode to DTR, RTS always set, ignore CTS, 1 stop bit no parity,
;8 bit data length, 9600 baud and no handshake delay.
2: SDM-SIO4 (P113)
1:
1
Reps
2:
0
Address
3:
1
Send/Receive Port 1
4:
2049
Command
5:
3146
1st Parameters
6:
0
2nd Parameters
7:
0
Values per Rep
8:
0000
Loc [ _________ ]
9:
1.0
Mult
10: 0.0
Offset
;set up a simple filter 1999 search for floating point number.
3: SDM-SIO4 (P113)
1:
1
Reps
2:
0
Address
3:
1
Send/Receive Port 1
4:
2054
Command
5:
1999
1st Parameters
6:
0
2nd Parameters
7:
0
Values per Rep
8:
0000
Loc [ _________ ]
9:
1.0
Mult
10: 0.0
Offset
;the set up filter command requires a delay of 4ms, the nearest we can get
;is 10ms with P22.
4: 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 above will only be done once.
5: Do (P86)
1:
11
Set Flag 1 High
;end of serial and filter setup.