3 Axis CNC router

[Neale]

Do any CSMIO IPM users out there know whether the CAN Terminator supplied should be connected to the expansion module terminal if not used? If not, what is it for?!
also do the power supply pins 9 and 22 on the step/Dir connector need to be connect direct to +24v and 0v on the psu? So worried I'm going to fry this thing!

I have to say that I can't even remember having a CAN terminator! I doubt that it is needed if you are not using CANbus, though. I think you need it if you use expansion modules. You can daisy-chain these modules together, each connecting to the next. The last one then needs a terminator for the CANbus to work properly.

Are you planning to use the digital outputs 0-3? If you are, then you need to connect 24V to the + and- as shown. If you are not using them, you don't need to connect power to those pins. As I remember, you use one of the relay outputs to switch the VFD and they don't need this extra PSU connection. You could use the digital outputs for things like switching coolant on/off, although personally I don't bother and use a manual switch.