Re: [CAD_CAM_EDM_DRO] Gecko power requirements

Weyland wrote:

>
> From: "Doug Fortune" <pentam@...>
>
> > If you use a Gecko 201 or 320 you need +5V from
> > somewhere (the Gecko 210 or 340 can operate using GND
> > only).
>
> This seems to be where some of my confusion is coming from.
> I have Gecko 210s. What does "operate using GND only" mean?

To quote from the manual (G210 & G340):

-------------
INPUT OPTION HEADER

The INPUT OPTION HEADER allows the STEP and DIRECTION
optio-isolators to be configured as either common ground
or common +5V DC.

If the G210/G340 inputs are driven by a source that has
only ground available, such as a PC parallel port, move
the 4 jumpers on the header so that it looks like the
COMMON GROUND seeting. Connect the input driver ground
to TERM 12 on the main connector.

If the G210/G340 inputs are driven by open collector
transistors or standard TTL gates, move the 4 jumpers
on the header so that it looks like the COMMON +5V DC
setting.

-------------

Doug Fortune
http://www.cncKITS.com