The many similarities between the ladder diagrams used to program PLCs and the relay ladder logic formerly used to control industrial systems eased the transition from hardwired relay systems to ...

In part two of this series, we looked at some specifics such as where to buy a PLC, getting started with programming, a small sample program using ladder ... drive home the impact of the PLC, let’s ...

The new feature supports 84 ladder commands, 24 DIO points, four analog inputs, three analog outputs and allows up to 400 ladder steps that can be programmed and run together with the PID control. The ...