signal conditioning and control comunication

[Jav]

Hi...
I´m comunicating with a stepper motor with a modbus driver and it works perfectly, but when I try to do
a control I have some problems.
I use the signal conditioning sc 2345 and I adquire signal and at the same time I ´m comunicating with the motor, but the motor move after that the sc2345 adquire the signal, I need that all occur at the same time, the movement of the motor and the adquisicion...

[RIO-Todd]

You can trigger the analog input acquisition with a digital or analog (on certain E Series devices) signal. I'm not sure if you could generate a digital pulse when the motor starts but you could probably configure a start trigger to trigger off of an analog voltage. Either way, this would be a way to start the motor and the analog input at the same time. If you are using LabVIEW, there are many shipping examples that integrate a start trigger with analog input. If you are using a text-based programming environment, there are also examples that get installed with NI-DAQ. I hope this helps.

Regards,

Todd D.
NI Applications Engineer