How can I control a Festo (MH..4) Valve with Labview?

Hey,
i'm very new to this Labview stuff and have a minimal background in electronics so I'm struggling with trying to sort this one out.
I have a high-frequency valve (~400Hz) that we would like to control via the 9 pin RS232 port using labview. is this possible?
i imagine we will need an interface between the computer and the the valve (which requires a 24Volt digital signal) but I am not sure what to use. Buying a stock pc control board from LabVIEW is not an option because I will be running this from a laptop.
cheers
Nic

Nic,
you can easely control 2(3) of the 9 Pins of the RS232 Port with the VISA Propeties (Visa Open, VISA Propety (Modem line settings: DTR and RTS state (and Break (TDx)) , VISA Close)
However, since the serial driver it is not made for this type of timed digital IO, I'm not shure about the resolution you might get. If you have a scope, then do some loop testing and move some windows or do some other system load :-)
Have a nice weekend
Greetings from Germany
Henrik
LV since v3.1
“ground” is a convenient fantasy
'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'

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