Comprising two bench-top open-board application modules. Each unit contains function switches and LED status indicators, showing the operation being performed.

Curriculum Coverage Fundamentals of Logic Basics of PLC programming Developing Ladder Logic Programs Programming timers Setting Initial Conditions Time Based Process Control Use of Interrupts & Emergency Stop

Automatic Washing Machine
This easy to understand process allows a sequence of events to be controlled and allows the development of several different programs that can be develped as conditional jumps depending on how the initial conditions have been set.

Traffic Signal Control
This simple sequence application allows simple traffic light control of a cross-roads to be implemented on a timed sequence. The control program can be further developed to cope with interrupts generated from pedestrian crossing requests or off-peak vehicle detector inputs.

Both units use 5V TTL signal levels and are interfaced to a PLC using standard 24V dc logical inputs.