3 alternative cr10x program – Campbell Scientific SDM-SIO4 4-Channel Serial I/O Interface User Manual
Page 71
Section 6. Data Error Detection
6-9
1: SDM-SIO4 (P113)
1:
1
Reps
2:
0
Address
3:
1
Send/Receive Port 1
4:
2304
Command
5:
9100
1st Parameters
6:
0
2nd Parameters
7:
0
Values per Rep
8:
0000
Loc [ _________ ]
9:
1
Mult
10: 0
Offset
*Table 2 Program
02: 0.0000
Execution Interval (seconds)
*Table 3 Subroutines
End Program
The program shown above will output to port 1 the string ‘123456789BB3D’.
6.3.3 Alternative CR10X Program
The earlier formatter example assumes the signature/CRC is calculated and
completed in one formatter string, which also means it will all be done within
one P113 datalogger instruction. This is not the only way to do it. It is possible
to calculate a CRC/signature across a number of formatter strings and therefore
a number of P113 Datalogger instructions. This could be done by using
command line commands and a datalogger program as shown below.
Formatter strings stored by using the command line.
FMTST 100 “g1”
FMTST 101 “i[some data]”
FMTST 102 “f6:2 G8”
*Table 1 Program
01: 1.0
Execution Interval (seconds)
;use formatter string 100 to set up the CRC16 on port 1
1: SDM-SIO4 (P113)
1:
1
Reps
2:
0
Address
3:
1
Send/Receive Port 1
4:
2304
Command
5:
9100
1st Parameters
6:
0
2nd Parameters
7:
0
Values per Rep
8:
0000
Loc [ _________ ]
9:
1
Mult
10: 0
Offset