What I could not found, is a way to get a generatet PWM-signal out of the intern cDAQ to a DO-Module (S-Serie) such as NI7477. And I do not see the way to do it. I have to mention, that I'm not a top-programmer, and I'm sure, that there is somone out there, who already has done this.
Thanks for replaying As far as I see, the forum discussion you mention, talks about measure PWM (Digital IN). I found an other forum input (how to pwm out on NI-9477): http://forums.ni.com/t5/Digital-I-O/how-to-pwm-out-on-NI-9477/td-p/624448 There Application engineer Samantha says, the NI9477 is not a "corelated" digital module and therefor it cannot link to the backplane counter of the cDaq. Others DO-modules could do that (like 9401). But what we need is the high power of the 9477 (1 Amp per channel - I would connect 3 outputs together for my need of 2.5 Amps). I don't find in the specifications of the different DO-modules if they are "corelated" modules. It seems, it's not possible what I want to do - a simple direct mode with the cDAQ to supply and regulate peltier elements.
