Controlling more than 4 motors simultaneously using 7344

Is there any way of controlling more than 4 motors by using a multiplexing scheme. or can it be done in any other way.

The 7344 supports four motors (servo or stepper) simultaneously. As long as you are using stepper motors you could also think of switching the motion signals with an external relay multiplexer to more motors but then the multiplexed motors couldn't run in parallel. Depending on your application this would mean that you would have to switch a lot of signals (step, direction, limit switches, inhibt outputs,...) and I don't think that this would make much sense. With servo motors this approach wouldn't work anyway as the control loop would be interrupted.
If you want to control more than four motors you better should use another PCI-7340 (2 or 4 axes) or a PCI-7350 (2, 4, 6 or 8 axes).
Best regards,
Jochen Klier
National Instruments Germany

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