Slaved axis, 2 steppers on Y axis with a PLC4x-G2 ? what about the XP23 connector ?

[JAZZCNC]

Ok, thanks for this informations, very instructive.
maybe you could write a "Cnc builder's guide" Book that "do's and don'ts" the beginner in electrical, mechanical aspects.. (seriously).

Yes been asked that many times.!! . . . . Same answer.!! The days are not long enough now so certainly haven't got time to sit down and do this.!

yes it is not very clear for me, the confusion certainly come from the 30A relay for the spindle on the pmdx-126 and 10A for auxilliary,
maybe it is as you said "not recommended" but they do this just in case you want to do it, or something like opening the power circuit while the watchdog isn't received.
http://www.pmdx.com/pmdx-126

• Provides one 30 ampere rated electromechanical relay useful for spindle control
• Provides one 10 ampere rated electromechanical relay for auxiliary functions

Well your kind of right but still wrong.!!
The relays built into the PMDX and Other Bob's do show there relays controling spindle power. But these are Spindles like routers, Kress etc that use AC mains voltage directly. They don't use them or recommend using them for cutting power to Spindles controlled thru inverters.
You will damage the VFD sooner or later if you do this.

Regards the Sharing of Signal to control 2 drives then again Current won't be the issue and it will work even with the AM882. But It won't work correctly as you'll get all kinds of strange behavor mostly revolving around pulse timing and resonance issues.
Unless you like wasting time then best avoided.!!