Created Date: June 07,2005

Created by: carane

Hi, i'm using the pointer method to scale 16 analog inputs with a DL-260 CPU.

If the CPU is reading 4 channels in one scan, how can i do to read the next 4 channels and the other channels on the next scan?

Thanks a lot.

Created Date: June 07,2005

Created by: Tech Guy

When you are using the pointer method, there really isn't anything you can do to modify it. The PLC will read the analog inputs the best and fastest way that it can.

Created Date: June 07,2005

Created by: carane

Yes, it's correct, but i'm trying to read a thermocouple module and the DL-260 CPU can read only 4 channels per scan. When does the PLC read the next 4 Channels? (i have 16 thermocouple signals)how can i programing that?

Created Date: June 07,2005

Created by: bcarlton

With 16 thermocouples you have 4 cards. Are you asking if the CPU reads 4 channels from one card, then on the next scan reads 4 channels from the next card etc? I think probably the CPU reads all 4 channels from each card on each scan. I think you are confusing the contrast with a DL230's operation which can only process one channel from each card per scan.

Created Date: June 07,2005

Created by: carane

Yes, i would like to know if the CPU reads all channels in one scan, i mean the 16 channels (4 channels by card) in one scan or if it reads 4 channels in one scan and the other 4 channels in the next scan, because the manual only explain that the CPU reads 4 channels per scan.

Thanks a lot.