Biesse Rover 346 Retrofit

PCW wrote: probably more like:
loadrt hm2_pci config="num_encoders=6 sserial_port_0=003xxx sserial_port_1=0000xxxx use_serial_numbers=1"

This doesnt work either.

at the halcmd: prompt, I can run the loadrt hostmot2 use_serial_numbers=1
Then when I try loadrt hm2_pci config=" num_encoders=6 num_pwmgens=0 num_stepgens=0 sserial_port_0=000xxx sserial_port_1=00000000"

I get the error.

Andys method works for me:

halcmd: loadrt hostmot2 use_serial_numbers=1
Note: Using POSIX realtime
hm2: loading Mesa HostMot2 driver version 0.15
halcmd: loadrt hm2_eth board_ip="10.10.10.10"
hm2_eth: loading Mesa AnyIO HostMot2 ethernet driver version 0.2
hm2_eth: 10.10.10.10: Hardware address: 00:60:1b:12:ab:cd
hm2_eth: discovered 7I92
hm2/hm2_7i92.0: 34 I/O Pins used:
hm2/hm2_7i92.0: IO Pin 000 (P2-01): IOPort
...

This is linuxCNC V 2.7.8

I am on 2.8 pre. IS it broken in 2.8 pre?

I doubt anything has changed in the driver between 2.7 and 2.8
It may be more likely that there's a bug with the use_serial_numbers option
and more than 1 sserial port since this is uncommon setup (more than 8 channels total)

You might also try only enabling the sserial channels that you actually have connected
probably something like sserial_port_0=00x sserial_port_1=00xxxxxx

Just a remark, in your pictures i can see 7i77 and 7i70 are working properly but 7i74 has no green light on, i am sure on mine it is on full when active.
But 7i70 works through it, so..........