5i25 + 7i74 -> 4 Smart Serial + 4 SSI Encoders

I have a 5i25 + 7i74

I need to interface 4 smart serial devices

and

4 Yaskawa SGMSV 20-bit Incremental Encoders via Smart Serial Interface (SSI)


Is there a firmware out there that can accomplish this. I was unable to find it in the 5i25 support software.


Thanks,
Curt

Perfect I was able to find it.

Thanks!

Thanks for your help.

Would you happen to know where I could find the protocol spec (or the SSI config string) for those yaskawa 20bit incremental encoders. I can't seem find that info anywhere.

Maybe I need to start a wiki page about all of the different encoder protocol formats that people know already to easily configure hostmot2 SSI for their application.

I already explained this on emc-users: sourceforge.net/p/emc/mailman/message/36930203/

It doesn’t work because it’s not ssi.
Its hdlc over Manchester over rs485.
I fully reverse engendered the protocol(including crc).
Stmbl has support for yaskawa encoders, there is some documentation in the code.

github.com/rene-dev/stmbl/blob/master/src/comps/yaskawa.c

Line 89 is the request. You can use only the f4 part of the stmbl, and convert the signal to sserial.
Or just use a stmbl.