how best to create these pulse signals for a sim program s7-1200

L D[AR2 said:

Example code:

Click to expand...

I'm saving this solution. Elegant.

Thanks for your input.

hadwll said:

I'm saving this solution. Elegant.

Thanks for your input.

Click to expand...

Yes, @LD never fails to impress.

Not as simple as @LD's, but here is my approach, described earlier.

Caveats

• The times are increased by an order of magnitude (2.75s cyclic time, instead of 275ms) so I could watch the bits.
• There is no randomness added to the green data; that is left as an exercise for the user.
• My ST/SCL skills are limited; it could be written better.
• Main (OB1; not shown) has one rung, which calls FB_set_bits_instance

Refactored version: cleaner with half the statements.


Also reduced the times to the actual targets, because the trace provides adequate feedback to demonstrate sub-millisecond resolution, as measured by the S7-1214C clcck. The cyclic interrupt blocks are possibly noticeable in the larger delay between the samples before and of the A rising edge.

Nice!

Thanks for taking the time plenty of solutions here.