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ishman wrote:Yes. It is acting as a switch.
Before I thought that ENAN+ should go to drives VCCCOM input and ENAN- should go to servo enable input directly.[/quote]
At least that is the correct polarity, so no damage should have been caused.

Thanks andypugh !

Now I need to confirm.
7i77 ENAN+ will connect to positive side of power supply.
7i77 ENAN- will connect to Drives servo enable input.
Power supplies common connect to Drives VCCCOM input ?

ishman wrote:
Yes, I think so. In any case as long as the voltage on ENAN+ is <100V nothing will be damaged.

Thanks andypugh !

I will try it tomorrow and will let you all know the results.

I purchased a 5i20/7i33/7i37 system a several months ago for my mill. It is proving to be a real challenge to fit the computer and cards in the cabinet without resorting to intermediate wiring from the daughter cards to the system.

The 5i25/7i77 looks like it will solve my problem since it only needs one round 6' cable. And not having to use nearly 100 din rail terminal blocks will recover the cost of the new boards. I can always use the 5i20 on another project.

The machine is a knee mill with a 4th axis. The added benefit of the 5i25 is that I can configure the knee and spindle as programmable axis' with just one daughter card.

So here is the question. How is the testing proceeding and where are we on configuration files? I feel comfortable with the 5i20. The lack of a knowledge base for the 5i25 is what scares me.

Doug

Well just so we are clear:
The hardware it's self has no problems that I have heard of. ( when we say testing we meant testing pncconf's ability to configure it)
hand editting a HAL file is always possible. It's a little tricky because there is no official docs on the pinnames and parameters though that can be figured out.

As for using PNCconf.
First you must use the buildbot version of linuxcnc - it has the latest bug fixes - which is required to use PNCconf on the 5i25.
also you must add the firmware descriptions manually - not a big deal - see here:http://www.linuxcnc.org/index.php/english/component/kunena/?func=view&id=21670&catid=39#21670
I won't lie It's not 100 percent tested yet - particularly around the spindle control ...
But for getting your basic XYZ machine functioning I think its a good place to start then add spindle then add A.
This way you can get a basic functioning machine while learning how the 5i25/7i77 HAL code works.
If you find a bug you can always hand edit the problem and report it here. I try to fix them as soon as I can.
I have a 7i76 and 7i77 card now to test with so bugs get squashed faster !

Chris M