The Arduino PLC - Ladder Simulator supports:

Ladder Logic simulator
Real-time execution
Simulated Inputs and Outputs
PLC Timers
PLC Counters
Internal PLC Flags
Bluetooth connection with Arduino ***
Arduino Programming with Ladder ***
Arduino control with Bluetooth ***

*** To use these features you must purchase to Arduino loaded with "ArduinoLadder.ino"
For information: [email protected]