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DMC-2x00 Contentsy v
Chapter 7 Application Programming 76
Overview .................................................................................................................................76
Using the DOS Editor to Enter Programs (DMC-2000 only)..................................................76
Edit Mode Commands...............................................................................................77
Example.....................................................................................................................77
Program Format.......................................................................................................................78
Using Labels in Programs .........................................................................................78
Special Labels............................................................................................................78
Commenting Programs..............................................................................................79
Executing Programs - Multitasking .........................................................................................80
Debugging Programs ...............................................................................................................81
Trace Commands ( DMC-2100/2200 only)...............................................................81
Error Code Command................................................................................................82
Stop Code Command.................................................................................................82
RAM Memory Interrogation Commands ..................................................................82
Operands....................................................................................................................82
Example.....................................................................................................................82
Program Flow Commands .......................................................................................................83
Event Triggers & Trippoints......................................................................................83
Conditional Jumps.....................................................................................................87
If, Else, and Endif......................................................................................................89
Subroutines................................................................................................................91
Stack Manipulation....................................................................................................91
Auto-Start Routine ....................................................................................................91
Automatic Subroutines for Monitoring Conditions...................................................92
Mathematical and Functional Expressions ..............................................................................97
Mathematical Operators ............................................................................................97
Bit-Wise Operators....................................................................................................97
Functions ...................................................................................................................99
Variables..................................................................................................................................99
Programmable Variables .........................................................................................100
Operands................................................................................................................................101
Special Operands (Keywords).................................................................................101
Arrays ....................................................................................................................................102
Defining Arrays.......................................................................................................102
Assignment of Array Entries...................................................................................102
Uploading and Downloading Arrays to On Board Memory....................................103
Automatic Data Capture into Arrays.......................................................................103
Deallocating Array Space........................................................................................105
Input of Data (Numeric and String).......................................................................................105
Input of Data............................................................................................................105
Operator Data Entry Mode......................................................................................106
Using Communication Interrupt..............................................................................107
Output of Data (Numeric and String) ....................................................................................108
Sending Messages ...................................................................................................109
Displaying Variables and Arrays.............................................................................110
Interrogation Commands.........................................................................................110
Formatting Variables and Array Elements ..............................................................112
Converting to User Units.........................................................................................113
Hardware I/O.........................................................................................................................113
Digital Outputs ........................................................................................................113
Digital Inputs...........................................................................................................114
The Auxiliary Encoder Inputs .................................................................................115
Input Interrupt Function ..........................................................................................115
Analog Inputs..........................................................................................................116