Omron SYSMAC CJ Series, Operation Manual

Page: 60 / 371

Wiring Section 2-2
48
Stegmann ATM 60-A connection
2-2-4-2 EnDat
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
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
1 GND Blue 9 0 V Encoder
ground
8 Us Red See footnote
1
1. Use an external power supply
Encoder CJ1W-MCH72 encoder inter-
face
Pin Signal Wire color Pin Signal
24 VDC Power Supply
24 V
0 V
7
8
2
3
9
2
10
3
11
1
8
CJ1W-MCH72
Pin Signal
2 Clock+
3 Clock-
6 5 V
7 Data+
8 Data-
9 0 V
Note 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.
Encoder CJ1W-MCH72 encoder interface
Pin Signal Wire color Pin Signal
3 Data Grey 7 Data+
4 /Data Pink 8 Data-
7 Clock Violet 2 Clock+