Single-turn Absolute Encoders

Compare single-turn absolute encoders for 0–360° position feedback across digital and analog controller interfaces.

CATEGORY OVERVIEW

A single-turn absolute encoder assigns a unique digital or analog value to each angular position within one revolution. It is suited to mechanisms whose required absolute range does not exceed 360 degrees at the encoder shaft. Selection depends on resolution, interface, shaft, flange, speed, protection and controller scaling.

SELECTION CHECKLIST

Confirm that the required absolute measurement does not need retained turn count beyond one revolution.

Choose bits per revolution from the required machine step and mechanical ratio.

Match RS485 Modbus, CANopen, SSI, BiSS-C or analog input behavior.

Confirm shaft or bore, flange, housing, cable exit and permissible speed.

PRODUCT OPTIONS

Single-turn or battery-free mechanical multi-turn absolute position feedback with power-off memory and programmable Modbus RTU parameters.

Compact IP54 absolute angular or multi-turn feedback for CANopen control networks.

Deterministic synchronous absolute feedback in a standard IP54 industrial housing.

Non-contact IP54 absolute angle measurement for direct PLC analog input.

CATEGORY QUESTIONS

The reported single-turn angle repeats. Use a multi-turn encoder when the machine must retain completed-turn information.

It can report its current measured angle after power-up, although the machine may still require calibration or a system reference.

TECHNICAL SELECTION

Include measurement, interface, supply, mechanics, environment, documentation and quantity.