Vernier LabPro - Manual (Page 2)

Revision Date: 08/02/02
LabPro Technical Manual 2
Incorporated, with permission of the publisher.
Contents
ABOUT THIS MANUAL.............................................................................................................................5
INTRODUCTION.........................................................................................................................................5
PROGRAMMING LABPRO ......................................................................................................................6
PROGRAM STRUCTURE ..........................................................................................................................6
I NITIALIZATION ............................................................................................................................................6
C HANNEL A CTIVATION .................................................................................................................................7
DATA COLLECTION MODES..................................................................................................................7
Data Collection Mode Comparison Table.............................................................................................8
T IMEBASE ....................................................................................................................................................9
D ATA R ETRIEVAL .........................................................................................................................................9
MISCELLANEOUS REFERENCE INFORMATION .............................................................................9
L AB P RO S OFTWARE U PGRADES ...................................................................................................................9
A RCHIVING IN L AB P RO ’ S FLASH M EMORY ................................................................................................9
T YPICAL P ROGRAM I MPLEMENTATIONS .....................................................................................................10
Analog Data Collection ........................................................................................................................10
Analog RT Data Collection...................................................................................................................12
Motion Detector Data Collection .........................................................................................................13
Monitoring Inputs During NRT ............................................................................................................13
Monitoring Inputs without Data Collection .........................................................................................13
Interrupting Data Collection ................................................................................................................13
Keeping Power on During Analog Data Collection .............................................................................14
Digital Data Collection ........................................................................................................................14
Digital Outputs .....................................................................................................................................18
C OMPUTER P ROGRAMMING ........................................................................................................................21
Basic communications ..........................................................................................................................21
Data Formats ........................................................................................................................................21
Serial Port Communication Details......................................................................................................22
USB Communication Details ................................................................................................................22
C OMMUNICATIONS S PEED L IMITATIONS .....................................................................................................23
C ALCULATOR P ROGRAMMING ....................................................................................................................24
Basic Communication ...........................................................................................................................24
Retrieving Data.....................................................................................................................................25
Data Control .........................................................................................................................................26
Calculator Limitations..........................................................................................................................27
LABPRO COMMAND SUMMARY ........................................................................................................28
C OMMAND 1 C HANNEL S ETUP .................................................................................................................31
C OMMAND 3 D ATA C OLLECTION S ETUP ..................................................................................................35
C OMMAND 4 C ONVERSION E QUATION S ETUP (A NALOG ).........................................................................39
C OMMAND 5 D ATA C ONTROL ..................................................................................................................41
C OMMAND 6 S YSTEM S ETUP ...................................................................................................................44
C OMMAND 7 R EQUEST S YSTEM S TATUS ..................................................................................................45
C OMMAND 8 R EQUEST C HANNEL S TATUS ...............................................................................................47
C OMMAND 9 R EQUEST C HANNEL D ATA ..................................................................................................48