Fault 03 — Wrong Address
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Briefing
A conveyor belt runs but never stops when the proximity sensor detects a part. The electrician says the sensor is wired and functioning correctly. Use the Variables tab to compare what the sensor reports to what the ladder reads.
Objectives
- Use the Variables tab to monitor raw input addresses
- Toggle the proximity sensor and observe which %I address changes
- Compare the live address to the tag declaration in the ladder
- Fix the address mismatch and verify the conveyor stops correctly
Hints
- Open the Variables tab and watch %I0.0 and %I0.1 as you toggle the sensor
- The tag address in the VAR declaration must match the physical terminal
- Cross-reference: which %I bit goes true when PROXIMITY_SENSOR is triggered?
I/O Table
Inputs
PROXIMITY_SENSORProximity sensor — wired to %I0.1
BOOL · %I0.1
Outputs
CONVEYOR_MOTORConveyor belt motor contactor
BOOL · %Q0.0
PART_DETECTED_LAMPPart-detected indicator lamp
BOOL · %Q0.1
Your program will be tested against:
All test cases run automatically when you submit. Assertions are hidden until you pass.
- #1Conveyor motor runs at startup
CONVEYOR_MOTOR is ON at startup (no part detected)
- #2Proximity sensor stops conveyor
When PROXIMITY_SENSOR goes true, CONVEYOR_MOTOR stops
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