HEIDENHAIN Length Gauges - Manual (Page 45)

45
Pin layout
8-pin coupling, M12 15-pin
D-sub connector,
male
For IK 215/PWM 20
Voltage supply Absolute position values
8 2 5 1 3 4 7 6
4 12 2 10 5 13 8 15
U
P
Sensor U
P
0 V Sensor 0 V DATA DATA CLOCK CLOCK
Brown/Green Blue White/Green White Gray Pink Violet Yellow
Interfaces
Position values
The EnDat interface is a digital,
bidirectional interface for encoders. It is
capable both of transmitting position
values as well as transmitting or updating
information stored in the encoder, or saving
new information. Thanks to the serial
transmission method , only four signal
lines are required. The DATA data is
transmitted in synchronism with the
CLOCK signal from the subsequent
electronics. The type of transmission
(position values, parameters, diagnostics,
etc.) is selected through mode commands
that the subsequent electronics send to
the encoder. Some functions are available
only with EnDat 2.2 mode commands.
Ordering designation Command set Incremental signals
EnDat01 EnDat 2.1 or
EnDat 2.2
With
EnDat21 Without
EnDat02 EnDat 2.2 With
EnDat22 EnDat 2.2 Without
Versions of the EnDat interface
Absolute encoder Subsequent electronics
» 1 V
PP
A*)
» 1 V
PP
B*)
Operating
parameters
Operating
status
Parameters
of the OEM
Parameters of the encoder
manufacturer for
EnDat 2.1 EnDat 2.2
*) Depends on
encoder
Absolute
position value EnDat interf
ace
Incremental
signals *)
The Interfaces of HEIDENHAIN
Encoders brochure, ID 1078628-xx,
includes comprehensive descriptions of
all available interfaces as well as general
electrical information.