It is an object of the present invention to provide an encoder that is easier to use. An encoder 1 used in a numerical control device includes a signal generation unit configured to generate a digital signal, and a configuration information output unit configured to output configuration information that determines operation of the signal generation unit, in which the configuration information output unit includes a voltage level acquisition unit that acquires a voltage level to be input, a configuration information selection unit that selects configuration information according to the acquired voltage level among a plurality of types of configuration information, and a configuration information transmission unit that transmits the selected configuration information to the signal generation unit.

It is an object of the present invention to provide an encoder that is easier to use.

An encoder 1 used in a numerical control device includes a signal generation unit configured to generate a digital signal, and a configuration information output unit configured to output configuration information that determines operation of the signal generation unit, in which the configuration information output unit includes a voltage level acquisition unit that acquires a voltage level to be input, a configuration information selection unit that selects configuration information according to the acquired voltage level among a plurality of types of configuration information, and a configuration information transmission unit that transmits the selected configuration information to the signal generation unit.