CHAPTER 13 RS-485 COMMUNICATIONS
PC Loader Communications 13-45
13
13.2.11 Wiring (CN3)
Connect to the host controller with marketed LAN cable.
Connect between the host (master) and servo amplifier (slave) so that the output of the host controller
becomes the input of the servo amplifier.
Connect between a servo amplifier (slave) and another servo amplifier (slave) with a straight cable.
The connector is RJ-45 (8 pins). No termination is necessary.
Up to 31 servo amplifiers can be connected.
Pin layout of connector
IN port (CN3A) OUT port(CN3B)
8 P5
7 M5(0V)
6 *TXD
5 RXD
4 *RXD
3 TXD
2 M5(0V)
1 P5
(Upper side) (Lower side)
8 N.C.
7 M5(0V)
6*TXD
5RXD
4 *RXD
3TXD
2 M5(0V)
1 N.C.
Host
controller
No terminal
resistor is
needed.
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