hiho, its me again. i dont want to make a mess in here with new topics so i decided to add my new newbie questions in here. here it is:
- what are a differences between s7400 and m7400? what is m7-400?
- what is a profibus?
- what is "mpi adress"? ... maybe i know what is this but not with this name...
- i was doing 'getting started' project and i was going fine but one thing interested me.
Press Key 1 and Key 2 in your test
configuration and monitor the result in
the variable table.
ok. i know you can do it in plcsim by setting input variable but - how to do it in "real life". i mean - how to tell the program that you push the button in real? how does plc get the information that key_1 was pressed? is it the clear "electric case"?
update: or maybe... its about the button pressed on the control panel

----------------------
thanks in advance for answers.
----------------------
one thing more:
2. Read manuals in _Manuals folder (first STEP 7 - Working with STEP 7.pdf)
what should be second?
cheers guys. gw.
update:
totally advanced question.
do you have some easy recipe to download software from a OP27 siemens control panel? o_O