Problem with 7i80db_16_7i76x2_7i77x2D

Ok, i do that tomorrow. Bedtime here now.
Thanks a lot so far.
--Per

ill try and duplicate this in Monday

Does the green light on the 7I77 blink?

I have tried loadrt hm2_eth board_ip="192.168.1.121" config=" num_encoders=6 num_pwmgens=0 num_stepgens=1 sserial_port_0=000xxx sserial_port_1=000xxx with same result.

Green led is not blinking, so there is somthing wrong.

--Per

What kind of cable is used between the 7I77 and 7I80?

I use this Cable www.elfa.se/en/sub-cable-db25-maxxtro-aa-305-03/p/12511401 it is a shielded 25 pin d-sub Cable.

Andy, I don't Think so. it is connected to the third db25 connector. If I connect it to any other connecter linuxcnc won't start.

That may be a problem, thats not a IEEE-1284 compatible cable so will likely have a lot of crosstalk between signals

(IEEE-1284 cables have a separate ground wire for each signal)

There have also been some improvements in the SmartSerial FPGA firmware to make it more robust
when dealing with poor signal quality due to wiring issues so updating the firmware may help
(I will have to rebuild since the 7I80 firmwares have not been updated for more than a year)

Yes, that could be it. Strange it works perfect with the other bitfile, but maybe som other pairs are use in that configuration.
I shall see if I can get one or borrow one.

btw, I'm just ready with the tool change sequence. It's only the carousel left now.
First toolchange

So that does suggest another problem (I do notice a comment in my firmware that says that config just barely fits in a -16 part)

What actual hardware do you have?