GE PLC using Proficy to control Robot

My son has a college project that he was assigned to write a program using Proficy and a GE PLC to control a 3 axis robot. Anyone have any sample code? Thanks

"3 axis robot" doesn't tell me enough about what the robot is supposed to do or how it goes about doing it. I could give you sample code for a three axis pick and place mechanism that uses pneumatic actuators, but if your son is supposed to write code for a robot that uses electric motors to move, my sample wouldn't do him much good.
He should spend his time writing a functional spec for his device instead of asking you to shop for someone to do his homework for him.

The Robot uses 3 B series servo motors in which i'm writing my programming to a series 90-30 GE plc. I'm trying to make a program with proficy that simulates picking and placing a object. Some issues I have ran into are understanding certain programming instructions such as GE DINT, LE DINT, and RANGE DINT and how you use them in ladder logic

The GT_DINT instruction is a "Greater Than" function using a DINT data type. DINT is a 32-bit signed integer. The GT_INT instruction is a "Greater Than" function using an INT data type. INT is a 16-bit signed integer.

In a 90-30 the key thing to remember about the DINT data type is that is uses two consecutive %R addresses. A DINT variable addressed at %R101 actually uses memory addresses %R101 and %R102, so you need to be careful that nothing in ladder logic uses %R102.

This will work OK

               _________

              | GT_DINT |

              |               |

%R0101  |               |

              |               |

              |               |

%R0103  |               |

              |________ |

This will give you problems

               _________

              | GT_DINT |

              |               |

%R0101  |               |

              |               |

              |               |

%R0102  |               |

              |________ |

Right click on the instruction in the Toolchest that you need help on and select Disply Help. The Help is really good!

good point by steve as usual. Also other instructions such as timers, and counters also take up more than a word of memory i think if my memory serves me right timers and counters take up 3 words. So be aware you don't overlap one's set of memory to another.