Carton Erector Sequence

Briefing

A carton erector picks flat blanks from a magazine, erects them, applies hot-melt glue, and ejects formed cartons. Each step requires limit-switch or sensor confirmation before advancing. Magazine empty or glue failure latches a fault and stops the cycle.

Objectives

• START_PB begins the erect cycle if MAGAZINE_FULL and GLUE_OK
• Step 1: MAGAZINE_PICK energises → await CARTON_DETECTED
• Step 2: ERECT_ACTUATOR down → await ERECT_LS_DOWN
• Step 3: GLUE_GUN on for 500ms (timed)
• Step 4: ERECT_ACTUATOR up → await ERECT_LS_HOME
• Step 5: CARTON_EJECT energises → carton dispatched → cycle restarts if STOP_PB not pressed
• FAULT_LAMP latches if MAGAZINE_FULL lost or GLUE_OK lost during cycle

I/O Table

Your program will be tested against:

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

1. #1MAGAZINE_PICK energises on START_PB

   START_PB with MAGAZINE_FULL + GLUE_OK -> MAGAZINE_PICK

2. #2Actuator erects after carton detected

   CARTON_DETECTED -> ERECT_ACTUATOR energises

3. #3Glue gun fires after erect reaches down position

   ERECT_LS_DOWN -> GLUE_GUN on

4. #4Carton ejects after glue dwell and actuator return

   Advance pick, erect and glue; when the actuator returns home CARTON_EJECT must energise

5. #5MAGAZINE_FULL lost mid-cycle latches fault

   Magazine goes empty during cycle -> FAULT_LAMP