Hello Everyone!
As the title suggests, i would like to know how to program a "First Scan Bit" in S7-300 PLC CPU314. I made a sequence with 3 cylinders, which you can see in the file i attached. You will also notice in the file, that there's a first scan bit in the beginning. This is what i would normally do, if i was using a S7-1200. But sadly, there's no first scan bit in S7-300. You have to make it yourself.
I read something about OB100 (warm restart) which is the only thing you can use in S7-300 for a "First Scan Bit". The problem is, i'm confused to what should go inside the OB100. What should i put inside?
I should also mention, that i'm a beginner. So don't be too hard on me.
As the title suggests, i would like to know how to program a "First Scan Bit" in S7-300 PLC CPU314. I made a sequence with 3 cylinders, which you can see in the file i attached. You will also notice in the file, that there's a first scan bit in the beginning. This is what i would normally do, if i was using a S7-1200. But sadly, there's no first scan bit in S7-300. You have to make it yourself.
I read something about OB100 (warm restart) which is the only thing you can use in S7-300 for a "First Scan Bit". The problem is, i'm confused to what should go inside the OB100. What should i put inside?
I should also mention, that i'm a beginner. So don't be too hard on me.