Patent ID: 9680449
Date: 2017-06-13
CPC Classifications: G01D,H03K

Claim:
1. An encoder input device comprising: a connection terminal configured to be connected to one of a plurality of encoders and made common to a plurality of different types of signal systems of the plurality of encoders configured to provide information about a position of a motor; a plurality of power supplies which supply voltage for signals levels corresponding to the plurality of different types of signal systems of the plurality of encoders, respectively; and a software switch that switches connection arrangement between the connection terminal and the power supplies according to the signal system of an encoder, of the plurality of encoders, which is currently connected to the connection terminal, among the plurality of different types of signal systems of the plurality of encoders, to supply, via the connection terminal, the signals levels peculiar to the signal system of the encoder currently connected to the connection terminal, wherein the power supplies supply the voltage of different levels to the encoders to support the plurality of different types of signal systems.