Sorry for not reporting back sooner, it was a busy year.
The holes were drilled and tapped to perfection, with the specification of "whatever distance apart" being met. The DIN rail lined up perfectly with the holes.
I notice this topic brought up another somewhat related issue, and that is how to communicate an S7 to a PC, using profibus or MPI.
Can someone please suggest a couple of options?
I know that it is important to make sure you don't make the profibus network too long by adding your PC, or make the number of nodes per segment too high, or you can bring the process down. If at all possible, try to connect when the machine is not running.
med ali haloui, can you elaborate on what you are trying to achieve? Do you want to program the PLC, add a permanent station to collect data? Just show values on a screen?