Jasondelane
Lifetime Supporting Member
I've got a task to be completed within 1 month. The task is to assign categories to different diameter, length, and defect logs; track them along a 300 foot long trio of conveyors, and kick them into one of three bins based on category.
PLC is Controllogix with RSLogix version 20.
Right now my plan is to assign a DINT to each log and use FFL/FFU to track each log's position on the conveyor. There's already an incremental encoder installed on the first conveyor.
The main problem I'm trying to solve is how to program will handle log slippage and hang ups along the conveyor that will cause the track in the program to reach a bin before the actual log gets there. I'm going to use photocells to control the actual kick, but I'm afraid that if a log is far enough out of position on the conveyor the kick will be completely missed and the log will end up at the final bin where it will be to large for the equipment there.
Any ideas?
PLC is Controllogix with RSLogix version 20.
Right now my plan is to assign a DINT to each log and use FFL/FFU to track each log's position on the conveyor. There's already an incremental encoder installed on the first conveyor.
The main problem I'm trying to solve is how to program will handle log slippage and hang ups along the conveyor that will cause the track in the program to reach a bin before the actual log gets there. I'm going to use photocells to control the actual kick, but I'm afraid that if a log is far enough out of position on the conveyor the kick will be completely missed and the log will end up at the final bin where it will be to large for the equipment there.
Any ideas?