Re: serial vs parallel port

>Dear group can EMC use the RS232 port (serial) instead of the printer
>port?

This bring us a question I have had for a few months now. How can you
truly synchronize multiple axis when driving them individually via a serial
interface, IE from an indexer card vs a step/direction approach from a
parallel port. The serial approach indicates giving one axis it
instructions and the going to the next axis and giving it it's instructions.

It seems to me that the indexer approach of sending serial commands to a
single axis, however fast that can happen would lead to a bunch of
individual movements not necessarily related to the goal at hand..

Having looked at this for a while, I ended up stripping the indexer cards
from my drivers to go to a step direction from a single port approach in
the hopes that a single Command structure would be better than a
discriminate command structure..

Any discussion on this???

Don