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Yes I know what it is, and I am of the camp want DNC to be identical in meaning to "drip feed".
I think DNC should not be used for "distributed numerical control" because this creates confusion. Clear definitions are important for effective communication.
We have an RS232 Isolator product, our I232, that is ideal for "drip feed" applications as well as others.
The I232 provides High Baud Rate Capability, simultaneously Long Cable Lengths, and Electrical Isolation.
DNC to do contouring will at times require many very short mechanical moves. At low baud rates, like 9600, this may cause data starvation and the CNC machine to move in jerks. This slows you down, is hard on the machine, and degrades the surface finish.
For more information on the I232 System visit our web site: