Omron TJ2-MC02 Hardware Reference Manual page 200

Hardware reference
Related BASIC commands
The following BASIC commands are related to EnDat absolute encoders:
• ATYPE (ATYPE=47)
• ENCODER_BITS
• ENCODER_CONTROL
• ENCODER_READ
• ENCODER_TURNS
• ENCODER_WRITE
For more information, refer to the Trajexia Programming Manual.
Tamagawa
The TJ1-FL02 can interface directly to Tamagawa "SmartAbs" absolute
encoders. Tamagawa encoders respond on a dedicated 2.5 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 data
returned is available to BASIC and you can use it to drive a servo motor.
In the figure, A is the encoder side, and B is the receiving side.
The connections for Tamagawa are:
/i
Encoder signal Axis A
SD 6
/SD 7
GND 5 / 15
Note
The TJ1-FL02 does not have a termination inside. In case of long
distances or disturbed communication, add an external termination
to the TJ1-FL02.
HARDWARE REFERENCE MANUAL
Axis B
8
9
5 / 15
DE
fig. 105
A
5V
ADM485
1 kΩ
220 kΩ
1 kΩ
B
TJ1-FL02
194