Absolute Encoders come in CANopen versions.
July 20, 2010 -
Measuring 36 mm with hollow shaft diameter up to 10 mm, F36 Series is designed without gears, making encoders completely insensitive to magnetic fields. OptoASIC technology enables resolution up to 16 bits for single-turn applications and 32 bits for multi-turn applications. Operating from -30 to 85°C, IP67-rated units are suited for drive engineering or medical technology applications.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Turck USA
3000 Campus Dr.
Minneapolis, MN, 55441 USA

Compact Absolute Encoders without Gears Now Available for CANopen
Minneapolis-TURCK has recently added a CANopen version to its line of F36 absolute encoders. The Kübler by TURCK F36 encoder series is characterized by its compact size, high performance and robust design, making them well suited for drive engineering or medical technology applications.
The F36 series is the first optical multiturn encoders without gears on the market, making them completely insensitive to magnetic fields. These encoders feature a hollow shaft diameter up to 10 mm in a device of only 36 mm. Despite its compact design, it is IP67 rated and has a wide temperature range of -30 to 85°C. Using OptoASIC technology enables the F36 encoder to reach a high resolution of up to 16 bits for singleturn applications; the multiturn version has a resolution of up to 32 bits.
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