CCST 38 — Program Comment Standards

Briefing

Write a well-commented rung that controls a MIXER_MOTOR: starts on BATCH_START, stops on BATCH_DONE or ESTOP, latches via MIXER_RUNNING. Demonstrate proper comment placement and tag naming per IEC 61131 conventions.

Objectives

• Use descriptive tag names (all UPPER_SNAKE_CASE)
• Write the logic correctly
• Add comments that describe WHAT, not HOW

I/O Table

Your program will be tested against:

All test cases run automatically when you submit. Assertions are hidden until you pass.

1. #1Mixer starts on batch start

   Mixer starts on batch start

2. #2Mixer stops on batch done

   Mixer stops on batch done