Parker Hannifin
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Using single-ended inputs with the Aries

Most inputs and outputs on the Aries are differential RS422-level compatible. These include the Step input, the Direction input, the Encoder inputs (A&B), and the Encoder outputs (A, B, & Z).

It is possible, with some external wiring, to use a single-ended encoder or a single-ended step & direction source. As with any single-ended signal, this signal is susceptible to noise when NOT driven by a differential source. Thus, it is not recommended to use a single-ended source.

The analog input can be driven either single-ended or differentially with no external wiring.

The drawing below applies both to the Step and Direction inputs and the Encoder A & B inputs.