Rockwell-automation 1771-DB Basic Module User Manual - Series A Manual de usuario descargar pdf (Pagina 166)

Appendix C

Basic Module Programming Hints

These programming hints can help you to properly program your module

to increase module performance.

1. Always define strings first.

2. Always dimension arrays after defining strings.

3. Define

the most

used variables first. Y

ou can use 0 values until you assign

real values.

4. When doing math, save intermediate values rather than recalculate.

5. Place the most used subroutines near the beginning of the program.

6. Straight through code executes faster, but uses more memory.

7. Put

multiple statements

on a line, after the program has been debugged.

Comments use space and slow program execution. After the program is

debugged save a fully commented copy on tape or spare ERROM and

remove comments.

BASIC Module

Programming Hints

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Rockwell-automation 1771-DB Basic Module User Manual - Series A Manual de usuario Pagina 166