The PLC Ladder Logic library includes functions such as contacts, input/output, timers, counters and math. It also includes instructions for Allen-Bradley™, Siemens™ and IEC61131-3 symbols.
This library was originally designed with training in mind. You can build, simulate and monitor a PLC Ladder Logic diagram without the need of a manufacturer interface. This allows trainees to focus on the logic and to learn principles instead of being slowed down by the tools.