Hi, guys I recently start learning PLC programming. I've downloaded free PLC book from Hugh Jack and trial LogixPro simulator. I've been reading PLC book very carefully especialy chapter about design. I decided to make program for door simulation in logixpro. First I made program with no formal methods suggested in the book and results were very satisfactory.Then I made stateflow chart with transitions and states and I got program that had 3 times more rungs. So can you give me any advice how to approach this. I know that good design on paper is very important, but when using that I get more rungs and sometimes strange behaviors. For example in Logixpro simulation user cannot press start,close and stop button at the same time but in reality he(she) can. Should I pay attention on that as well? I need your advices how you started anf if is it normal to screw thing a lot in the begining? I simply cannot think all posibbles situations and see them only after I start testing program
Any help would be greatly appreciated.
P.S. Excuse for bad English, it's not my native language.
Any help would be greatly appreciated.
P.S. Excuse for bad English, it's not my native language.