Dear all,
It’s a long time that I didn’t post PLC program question. But now I’m facing a new difficulty in solving logic problem for my new machine project. This project is quite tricky, as it require more memory functions.
The diagram below is an example of my project. I assume 4 workstations in here. On every work cycle the indexer will spin 72 degree. Each station will consist of digital laser sensor and digital probe, which is connected to the PC. So the PC will receive data on each cycle and determine whether the part inspection is Pass or Fail. The PC will give signal to the PLC then (this is done by using Delphi software).
1. When the part had finished all workstations and back to unload station, then the PLC will show all the result at the touch screen.
2. If inspection on all stations is Pass, then the tower light show green light.
3. If any inspection Fail, then the red light will blink.
I know how to work out the motion of the machine. However, I have no clue how the PLC can store the data of each station and only show it when the part is back to the unloading station.
Can anyone help me on this? Please give suggestion. Thank you!
It’s a long time that I didn’t post PLC program question. But now I’m facing a new difficulty in solving logic problem for my new machine project. This project is quite tricky, as it require more memory functions.
The diagram below is an example of my project. I assume 4 workstations in here. On every work cycle the indexer will spin 72 degree. Each station will consist of digital laser sensor and digital probe, which is connected to the PC. So the PC will receive data on each cycle and determine whether the part inspection is Pass or Fail. The PC will give signal to the PLC then (this is done by using Delphi software).
1. When the part had finished all workstations and back to unload station, then the PLC will show all the result at the touch screen.
2. If inspection on all stations is Pass, then the tower light show green light.
3. If any inspection Fail, then the red light will blink.
I know how to work out the motion of the machine. However, I have no clue how the PLC can store the data of each station and only show it when the part is back to the unloading station.
Can anyone help me on this? Please give suggestion. Thank you!