Count Posted April 3, 2013 Report Share Posted April 3, 2013 Hey everyone I'm very much new to both ladder logic and plc controllers and am running U90. I'm trying to use a plc to control extraction fans as the output and a temperature probe to read air temperature. Trying to get the intake and out take fans to switch on when the temperature gets above a certain point, and then run until the temp reaches a lower point. I know that function blocks are required to do this, but are unsure of how to program the plc to read the temp probe or how to program FB's. This may seem backwards compared to the calibre of the other posts here, but any help would be outstanding! Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.