I had to downgrade firmware

gjh

In pursuit of getting the probe function to work on my DDSC V1.1, I upgraded the firmware from 2016-x-x-73-NOR (sorry didn't record the full date) to 2019-03-20-107-NOR only to eventually discover that the problem was with parameter #223.
However, with the new firmware installed, system behaviour became very erratic, making a mess of simple carving.
In desperation, I downgraded to the oldest version I could find - 2016-06-10-80-NOR.
Now it's all working and I'm a happy camper once more!

Is there a point where firmware becomes incompatible with V1.1 hardware?

ytliu

I think they should be compatible.

The system behavior you said is very erratic, and I want to know the specific phenomenon. Is the movement stopped, the display is still, like freezing?

gjh

The task was to carve some numbers. It seemed to start ok but at a consistent point first the x-axis trips on position error then the y- axis trips.
I don't have the drive faults wired to stop the program, so it carries on, but x and  y don't move, of course.
On another job - cut a single slot: it cut the x & y dimension ok but didn't reach proper depth when it finished. At the end when it attempted to return to the work zero (G54), it didn't quite make it - even though the drives did not trip - but there was a terrible noise that, in my experience, is caused by an oscillation due to too high acceleration.

ytliu

I want to know some specific information about your controller, and the programs in the attachment will display them on the screen. thank you.

gjh

I didn't see anything different.
What should I be looking for?

ytliu

This set of numbers.

gjh

OK - needed a couple of tries to get it loaded...

1219, 2, 1, 2016, 422, ffff

Version displays 2019-04-28-108-NOR

I haven't tested operation with this installed. I'm inclined to go back to what I know works.

ytliu

Thank you, you use the old version first, I will check the reasons for incompatibility.

gjh

Hi Ytliu,
Did you get any useful information from the set of numbers produced in #7?

ytliu

Hi gjh,
I did a survey on fb about whether the system is stable after the upgrade, https://www.facebook.com/groups/ ... k/2817905121559974/,
I did not see information similar to you, you can upgrade the latest firmware, try again.