This is my first time posting here so I hope this is the right area, and I apologize if it's not. We have a "new to us" LC40 that just came into the shop but no one here is proficient in RS232C transfers from/to pc and machine. I feel like I've learned so much about it in the last couple of days but realized there's like 100x more than I don't know. I was able to change the parameters on the machine so they can somewhat communicate with each other. I can send programs from the machine to the pc just fine. I can send about 15 lines from the pc to the machine, but if I try to do anymore than that it gives me a RS232C device not ready ERROR ff. If anyone has any ideas that may help me or want any additional information please let me know, thank you.