Section 9. Programming
86
9.9.4
Expressions in Parameters
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See
Expressions
(p. 87) for more information on expressions.
Many parameters allow the entry of expressions. If an expression is a
comparison, it will return -1 if the comparison is true and 0 if it is false (
Logical
Expressions
(p. 88)).
CRBASIC EXAMPLE. Use of Expressions in Parameters
(p. 86) shows an example of the use of expressions in parameters in the
DataTable instruction, where the trigger condition is entered as an expression.
Suppose the variable TC is a thermistor temperature:
CRBASIC EXAMPLE 13.
Use of Expressions in Parameters
'DataTable (Name, TrigVar, Size)
DataTable (Temp, TC > 100, 5000)
When the trigger is "TC > 100", a TC temperature > 100 will set the trigger to
true and data is stored.
9.9.5
Arrays of Multipliers and Offsets
A single measurement instruction can measure a series of sensors and apply
individual calibration factors to each sensor as shown in
CRBASIC EXAMPLE.
Use of Arrays as Multipliers and Offsets
(p. 86). Storing calibration factors in
variable arrays, and placing the array variables in the multiplier and offset
parameters of the measurement instruction, makes this possible. The
measurement instruction uses repetitions to implement this feature by stepping
through the multiplier and offset arrays as it steps through the measurement
input channels. If the multiplier and offset are not arrays, the same multiplier
and offset are used for each repetition.
CRBASIC EXAMPLE 14.
Use of Arrays as Multipliers and Offsets
Public Pressure(3), Mult(3), Offset(3)
DataTable (AvgPress,1,-1)
DataInterval (0,60,Min)
Average (3,Pressure(),IEEE4,0)
EndTable
BeginProg
'Calibration Factors:
Mult(1)=0.123 : Offset(1)=0.23
Mult(2)=0.115 : Offset(2)=0.234
Mult(3)=0.114 : Offset(3)=0.224
Scan (1,Sec)
'VoltSe instruction using array of multipliers and offsets:
VoltSe (Pressure(),3,1,Mult(),Offset())
CallTable AvgPress
NextScan
EndProg
Summary of Contents for CR200
Page 32: ...Section 2 Quickstart Tutorial 22 ...
Page 45: ...Section 3 Overview 35 3 3 Specifications ...
Page 46: ...Section 3 Overview 36 ...
Page 58: ...Section 4 Sensor Support 48 ...
Page 62: ...Section 5 Measurement and Control Peripherals 52 ...
Page 78: ...Section 8 CR200 X Configuration 68 ...
Page 102: ...Section 9 Programming 92 ...
Page 138: ...Section 11 Programming Resource Library 128 ...
Page 156: ...Section 16 Support Software 146 ...
Page 160: ...Section 17 Care and Maintenance 150 ...
Page 167: ...Section 18 Troubleshooting 157 18 3 3 2 Charging Circuit Test Solar Panel ...
Page 168: ...Section 18 Troubleshooting 158 18 3 3 3 Charging Circuit Test Transformer ...
Page 169: ...Section 18 Troubleshooting 159 18 3 3 4 Adjusting Charging Circuit Voltage ...
Page 170: ...Section 18 Troubleshooting 160 ...
Page 184: ...Appendix A Glossary 14 ...
Page 190: ...Appendix B Status Table and Settings 20 ...
Page 192: ...Appendix C Serial Port Pin Outs 22 ...
Page 211: ......