Campbell Scientific CR1000KD CR800 and CR850 Measurement and Control Systems - Page 459

Appendix A. CRBasic Programming Instructions Scan / ExitScan / ContinueScan / NextScan Establishes the program scan rate. ExitScan and ContinueScan are optional. See Faster Measurement Rates (p. 232) for information on use of Scan() / NextScan in burst measurements. Syntax Scan(Interval, Units, Option, Count) [statement block] ExitScan [statement block] ContinueScan [statement block] NextScan Select Case / Case / Case Is / Case Else / EndSelect Executes one of several statement blocks depending on the value of an expression. CaseElse is optional. Note that EndSelect and EndIf call the same function. Syntax Select Case testexpression Case [expression 1] [statement block 1] Case [expression 2] [statement block 2] Case Is [expression fragment] Case Else [statement block 3] EndSelect SlowSequence Marks the beginning of a section of code that will run concurrently with the main program. Syntax SlowSequence SubScan / NextSubScan Controls a multiplexer or measures some analog inputs at a faster rate than the program scan. See Faster Measurement Rates (p. 232) for information on use of SubScan / NextSubScan in burst measurements. Syntax SubScan(SubInterval, Units, Count) [measurements and processing] NextSubScan TriggerSequence Used with WaitTriggerSequence to control the execution of code within a slow sequence. Syntax TriggerSequence(SequenceNum, Timeout) WaitTriggerSequence Used with TriggerSequence to control the execution of code within a slow sequence. Syntax WaitTriggerSequence 459