7i43 max step freq

someone tell me the maximum step frequency of 7i43h?
I read that is low as parallel port mode.
thanks
mauro

I think its like ClockLow/4 so 12.5 MHz with the 7I43s 50 MHz ClockLow. What_is_ slower with the 7I43 (compared to our PCI cards) is EMCs access time to the hardware registers, so servo thread rates over a few KHz are not practical with the 7I43. This is not a problem with the hardware step generator, where a 1KHz update rate is usually fine, as this means that the step _rate_ is updated at 1 KHz, with the hardware
generating the actual pulses (with up to MHz rates).

Thanks for the quick replies and clear.
Mauro