2
The EnDat interface provides everything
needed to reduce system cost and at the
same time improve your technical standard.
The most significant benefits are:
Cost optimization
• A single interface for all absolute and
incremental encoders
• Simple subsequent electronics with
EnDat receiver chip and standard
components
• Simpler, more economical voltage
supply, since remote sensing is not
required
• Simple connection technology: Standard
connecting elements (M12 – 8-pin),
single shielded standard cables and low
wiring costs
• Only one cable with HMC 6: the Hybrid
Motor Cable contains the lines for the
encoder, the motor and the brake
• Small motor or system dimensions
through compact connecting elements
• No expensive additional sensory analysis
and wiring: EnDat 2.2 transmits additional
data (limit switch, temperature, etc.)
• Faster configuration during installation:
Datum shifting through offsetting by a
value in the encoder
Improved quality
• Higher system accuracy through specific
optimization in the encoder
• High contour accuracy, particularly for
CNC machine tools: position value
formation in the encoder permits shorter
sampling intervals without influencing
the computing time of the CNC
Higher availability
• Automatic configuration of the system
axis: all necessary information can be
saved in the encoder (electronic ID label).
• High system reliability through purely
digital data transmission
• Diagnostics of the encoders through
monitoring messages and warnings that
can be evaluated in the subsequent
electronics
• High transmission reliability through
cyclic redundancy checking
Safety system
• EnDat 2.2 was conceived for safety-
related machine designs up to SIL 3
• Two independent position values for
error detection
• Two independent error messages
• Checksums and acknowledgments
• Forced dynamic sampling of error
messages and CRC formation by
subsequent electronics
Support for state-of-the-art machine
designs
• Suitable for direct drive technology
thanks to high resolution, short cycle
times and commutation information
• Cyclic sampling every 25 µs with full
“read and write” mode
• Position values available in the subse-
quent electronics after only approx. 10 µs
Miniature connecting
element, M12, 8-pin
Simple connection technology,
8-wire cable, single shielding
Integrated interpolation and position value
formation, temperature measurement
Connecting element,
e.g. M12, D-sub
Voltage supply without
remote sensing
(U
P
= 3.6 to 5.25 V or
3.6 to 14 V)
Simple subsequent electronics
with EnDat 2.2 receiver chip
(“EnDat Master”)
* For parallel voltage supply lines
or battery buffering
Benefits of the EnDat interface
For further information on implementing
EnDat or additional documents, see
www.endat.de
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