Hello everyone!
This is my first post here, as i have a problem regarding a program i have to program ASAP.
When i'm starting my M91 PLC I'm supposed to enter the value "485" before it is possible to start my process. (I'm filling water into a tank through diffrent transmitters)
My question is how i program this into the U90 ladder.
Detailed list of my problems:
When i start the PLC i'm gonna arrive at a starting screen were i have to type in "485" and then press enter to go to the next stage.
I can't start anything before i have entered 485.
When i enter 485 i have 1 minute to start my process, so I imagine the 485 code is a MB that i can reset.
When i hit my emergency stop i have 2 minutes to start the process, if not it goes into the password protection state again.
Anyone know how to do this?
Another question: How do i make a 2sec pulse i can connect to a light? I know there is a SB for 1sec pulse, but I need one for 2 seconds.
Much love, Daniel