Runnable simulator field guide
PLC simulator for packaging: test checklist
Direct answer
The learner can trace a product through stations, test timing and tracking boundaries and recover without losing state coherence.
Written for packaging technicians and PLC learners practicing conveyor, sensor, filling, capping, labeling, reject and recovery logic.

Scenario setup
Product, stations, conveyor zones, sensors, actuators, recipes, quality decisions, timing, rejects, stops and restart policy.
I/O and state map
Product arrival through detection, tracking, station command, actuator feedback, inspection, reject and count evidence.
Normal run
One product and mixed product flow completed from empty line to counted output.
Boundary run
Blocked photoeye, missing product, late actuator, reject full, jam, recipe change, stop mid-cycle and power return.
Injected fault
A product-state, sensor, timer, station, actuator, quality, tracking or recovery mismatch.
Target check
The sequence, safety, quality and performance validated on the intended equipment and control platform.