George,

Power supplies in computers are getting bigger. The AMD Tbird chip requires a minimum of a 300 watt power supply. My computer has a 500 watt power supply. I use a lot of scsi components in my box.

A great resource for anyone using and working with PLC's is the website www.control.com

Joe, you may want to post a question there. The folks there are pretty competent with controls and automation (but this website is much friendlier! [Linked Image] )

[This message has been edited by Currently (edited 08-06-2002).]