Campbell Hausfeld Serial I/O Interface SDM-SIO4 - Manual (Page 50)

SDM-SIO4 User Guide
5-20
;end of set up.
5: End (P95)
;get the two floating point values from the SDM-SIO4.
6: SDM-SIO4 (P113)
1: 1 Reps
2: 0 Address
3: 1 Send/Receive Port 1
4: 4 Command
5: 0 1st Parameters
6: 0 2nd Parameters
7: 2 Values per Rep
8: 1 Loc [ Voltage ]
9: 1.0 Mult
10: 0.0 Offset
;Only set the output flag when the voltage is
;greater than or equal to -99998.
7: IF (X<=>F) (P89)
1: 1 X Loc [ Voltage ]
2: 3 >=
3: -99998 F
4: 10 Set Output Flag High (Flag 0)
;Time stamp.
8: Real Time (P77)
1: 1111 Year,Day,Hour/Minute,Seconds
;Instantaneous values stored to final storage.
9: Sample (P70)
1: 2 Reps
2: 1 Loc [ Voltage ]
*Table 2 Program
02: 0.0000 Execution Interval (seconds)
*Table 3 Subroutines
End Program
Example CR10X Program using the Polling Method
This program will deal with sensors that send data at random intervals. The
program polls the SDM-SIO4 to see if data is available and only stores the data
then.
A typical filter that could be used is as follows:
fltst 200 "t[data]A5xff"
This filter works as follows:
t[data] – this filter waits for an exact string match before it starts the next filter. In
this case it is waiting for the sensor to send the string ‘data’.
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.