Dirk,
Re: I was surprised I/A doesn't seem to have a block I can use to generate a
repeating pulse contact.
Actually, there is one, the PTC block.
I generated a string of pulses on either of two outputs. The choice of output
is based on the sign of the difference between its MEAS and SPT. The duration
of the pulse is based on the amount of the difference.
It seems to me that you could get what you want with one of these. Set the MEAS
to 0, the SPT to >0, and turn it on and off with the MA bit.
Please note, I've never, ever seen one of these put to use, but it looks like a
simple way to do what you want.
Best,
Alex
_____________________________________________________________________________________
Alex Johnson | Schneider Electric | Invensys | United States | System
Architect, Next Generation Systems
Phone: +1 713 329 8472 | Fax: +1 713 329 1700
Email: alexander.johnson@xxxxxxxxxxxxxxxxxxxxxx | Site:
www.schneider-electric.com | Address: 10900 Equity Drive, 77041 Houston, TX,
United States
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