Campbell CR1000 User Manual

Table of Contents
7.8.2 Writing and Editing Programs .................................................... 125
7.8.2.1 Short Cut Programming Wizard ........................................ 125
7.8.2.2 CRBasic Editor ................................................................. 125
7.8.2.2.1 Inserting Comments into Program ........................... 126
7.8.2.2.2 Conserving Program Memory ................................. 126
7.8.3 Sending CRBasic Programs ........................................................ 126
7.8.3.1 Preserving Data at Program Send ...................................... 127
7.8.4 Programming Syntax .................................................................. 128
7.8.4.1 Program Statements .......................................................... 128
7.8.4.1.1 Multiple Statements on One Line ............................ 128
7.8.4.1.2 One Statement on Multiple Lines ............................ 128
7.8.4.2 Single-Statement Declarations .......................................... 129
7.8.4.3 Declaring Variables ........................................................... 129
7.8.4.3.1 Declaring Data Types .............................................. 130
7.8.4.3.2 Dimensioning Numeric Variables ........................... 134
7.8.4.3.3 Dimensioning String Variables ................................ 134
7.8.4.3.4 Declaring Flag Variables ......................................... 135
7.8.4.4 Declaring Arrays ............................................................... 135
7.8.4.5 Declaring Local and Global Variables .............................. 136
7.8.4.6 Initializing Variables ......................................................... 137
7.8.4.7 Declaring Constants .......................................................... 137
7.8.4.7.1 Predefined Constants ............................................... 138
7.8.4.8 Declaring Aliases and Units .............................................. 138
7.8.4.9 Numerical Formats ............................................................ 139
7.8.4.10 Multi-Statement Declarations ......................................... 140
7.8.4.10.1 Declaring Data Tables ........................................... 140
7.8.4.10.2 Declaring Subroutines ........................................... 147
7.8.4.10.3 'Include' File .......................................................... 147
7.8.4.10.4 Declaring Subroutines ........................................... 150
7.8.4.10.5 Declaring Incidental Sequences ............................. 150
7.8.4.11 Execution and Task Priority ............................................ 151
7.8.4.11.1 Pipeline Mode ........................................................ 152
7.8.4.11.2 Sequential Mode .................................................... 153
7.8.4.12 Execution Timing ............................................................ 154
7.8.4.12.1 Scan() / NextScan .................................................. 154
7.8.4.12.2 SlowSequence / EndSequence ............................... 155
7.8.4.12.3 SubScan() / NextSubScan ...................................... 156
7.8.4.12.4 Scan Priorities in Sequential Mode ........................ 156
7.8.4.13 Programming Instructions ............................................... 158
7.8.4.13.1 Measurement and Data-Storage Processing ........... 158
7.8.4.13.2 Argument Types .................................................... 159
7.8.4.13.3 Names in Arguments ............................................. 159
7.8.4.14 Expressions in Arguments ............................................... 160
7.8.4.15 Programming Expression Types ..................................... 160
7.8.4.15.1 Floating-Point Arithmetic ...................................... 161
7.8.4.15.2 Mathematical Operations ....................................... 161
7.8.4.15.3 Expressions with Numeric Data Types .................. 162
7.8.4.15.4 Logical Expressions ............................................... 164
7.8.4.15.5 String Expressions ................................................. 166
7.8.4.16 Programming Access to Data Tables .............................. 167
7.8.4.17 Programming to Use Signatures ...................................... 169
7.9 Programming Resource Library ........................................................... 169
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Campbell CR1000 Specifications

General

Power Requirements	9.6 to 16 VDC
Data Logger Operating System	CRBasic
Memory	4 MB
Analog Inputs	16 single-ended or 8 differential
Analog Input Resolution	13 bits
Analog Input Range	+/-2.5V
Digital I/O	8
Pulse Counters	2
Communication Ports	RS-232
Operating Temperature	-25°C to +50°C
Pulse Channels	4