CR200/CR200X Series Dataloggers - Campbell Scientific

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Section 9. Programming 9.5 Structure TABLE. CRBASIC Program Structure (p. 72) delineates CRBASIC program structure: Table 6. CRBASIC Program Structure Declarations Declare constants Declare Public variables Dimension variables Define Aliases Define Units Define data tables. Process/store trigger Table size Processing of Data Begin Program Set scan interval Measurements Processing Call Data Table(s) Initiate controls NextScan End Program Define datalogger memory usage. Declare constants, variables, aliases, units, and data tables. List fixed constants List / dimension variables viewable during program execution List / dimension variables not viewable during program execution. Assign aliases to variables. Assign engineering units to variable (optional). Units are strictly for documentation. The CR200(X) makes no use of Units nor checks Unit accuracy. Define stored data tables Set triggers when data should be stored. Triggers may be a fixed interval, a condition, or both. Set the size of a data table List data to be stored in the data table, e.g. samples, averages, maxima, minima, etc. Processes or calculations repeated during program execution can be packaged in a subroutine and called when needed rather than repeating the code each time. Begin Program defines the beginning of statements defining datalogger actions. The scan sets the interval for a series of measurements Enter measurements to make Enter any additional processing Declared data tables must be called to process and store data Check measurements and initiate controls if necessary Loop back to Set Scan and wait for the next scan End Program defines the ending of statements defining datalogger actions. CRBASIC EXAMPLE. Proper Program Structure (p. 73) demonstrates the proper structure of a CRBASIC program. 72
Section 9. Programming CRBASIC EXAMPLE 3. Proper Program Structure 9.6 Declarations I - Single-line Declarations Public variables, Dim variables, Constants, Units, Aliases, Data Tables and Subroutines are declared at the beginning of a CRBASIC program. TABLE. Rules for Names (p. 85) lists declaration names and allowed lengths 9.6.1 Variables A variable is a packet of memory, given an alphanumeric name, through which pass measurements and processing results during program execution. Variables are declared either as Public or Dim at the discretion of the programmer. Public variables can be viewed through software numeric monitors. Dim variables cannot. Up to 128 public variables can be declared in a CR200(X) program and up to 48 public variables declared in a CR200 program. 73
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OPERATOR’S MANUAL CR200/CR200X Se
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Assistance Products may not be retu
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Table of Contents 4.4 Pulse Count M
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Table of Contents 11.4.3 SDI-12 Pow
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Table of Contents Index ...........
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Table of Contents CRBASIC EXAMPLE 1
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Section 1. Introduction Table 1. CR
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Section 2. Quickstart Tutorial 2.1.
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Section 2. Quickstart Tutorial Figu
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Section 2. Quickstart Tutorial Exam
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Section 2. Quickstart Tutorial 2. A
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Page 36 and 37: Section 3. Overview Figure 25: Feat
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Page 62 and 63: Section 5. Measurement and Control
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Section 11. Programming Resource Li
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Section 12. Memory and Data Storage
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Section 13. Telecommunications and
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Section 14. PakBus Overview • Rou
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Section 14. PakBus Overview 14.4.6
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Section 14. PakBus Overview 14.5.3
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Section 15. Alternate Telecoms Reso
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Section 15. Alternate Telecoms Reso
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Section 16. Support Software 16.4 P
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Section 16. Support Software 146
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Section 17. Care and Maintenance Fi
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Section 17. Care and Maintenance 15
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Section 18. Troubleshooting 18.1.1.
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Section 18. Troubleshooting Table 2
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Section 18. Troubleshooting 18.3.3
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Section 18. Troubleshooting 18.3.3.
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Section 18. Troubleshooting 160
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Appendix A. Glossary baud rate sett
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Appendix A. Glossary Earth Ground u
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Appendix A. Glossary modem/terminal
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Appendix A. Glossary period average
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Appendix A. Glossary the table is e
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Appendix A. Glossary VAC Volts Alte
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Appendix A. Glossary 14
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Appendix B. Status Table and Settin
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Appendix C. Serial Port Pin Outs 22
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Appendix D. ASCII / ANSI Table Dec
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Appendix D. ASCII / ANSI Table Dec
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Appendix F. Sensors and Peripherals
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Index Debugging • 151 Declaration
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Index O Offset • 86 Ohm • 6 Ohm
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Index U UPS • 11 User Program •
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CR200/CR200X Series Dataloggers - Campbell Scientific

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