Omron trajexia CJ1W-MCH72 Operation Manual page 59

Wiring
2-2-4-2 EnDat
Note
48
Encoder
Pin Signal
1 GND
8 Us
1. Use an external power supply
You can configure the CJ1W-MCH72 to interface directly to EnDat absolute
encoders. EnDat absolute encoders respond on a dedicated Clock and Data 1
MHz RS485 serial interface when their position is requested by the controller.
When you set the encoder to the relevant encoder mode, the axis transmits an
information request to the encoder on a fixed 250 µs cycle.
The connections for EnDat are:
/i
Pin
2
3
6
7
8
9
The CJ1W-MCH72 encoder interface does not have a termination inside. In case of
long distances or disturbed communication, add an external termination to the inter-
face.
The table below and the figure give an example of the connection of the
Heidenhain ROC 425 2048 5XS08-C4 encoder to the CJ1W-MCH72.
/i
Encoder
Pin Signal
3 Data
4 /Data
7 Clock
Wire color
Blue
Red
2
10
3
11
1
8
24 V
0 V
24 VDC Power Supply
Stegmann ATM 60-A connection
Clock+
Clock-
5 V
Data+
Data-
0 V
CJ1W-MCH72 encoder interface
Wire color
Grey 7
Pink 8
Violet 2
Section 2-2
CJ1W-MCH72 encoder inter-
face
Pin Signal
9 0 V
ground
1
See footnote
CJ1W-MCH72
7
8
2
3
9
Signal
Pin Signal
Data+
Data-
Clock+
Encoder