I have a fanuc 0-MD ready for the 4th axis including 4th servo amplifier A06b-6079-h104. I do some reading and fourth axis does not seem to be plug and play. I don't really need full 4th ,indexer is sufficient, but all the electronics is already there to do full 4th i think. Does any 230v ac servo motor 4th axis can be used? and which prm have to be set?