9
Rev. 1.0
7/31/2019
SSDC-R/C/IP Hardware Manual
2.2 RS-485/422 communication port (-R type)
RS-485/422 communication port
1
8
1
8
PIN
Definition
Color
1
RX+
Orange/White
2
RX-
Orange
3
TX+
Green/White
4
NC
Blue
5
NC
Blue/White
6
TX-
Green
7
GND
Brown/Whitelv
8
GND
Brown
Connecting to a Host using RS-485
Before configure the drive by StepSERVO Quick tuner software, use the CAT5 cable to connect the drive(COM1 or COM2)
and host.
RS-485 four-wire connection
RS-485 two-wire connection
Drive
Connection
RX+
Connect to the host’s TX+
RX-
Connect to the host’s TX-
TX+
Connect to the host’s RX+
TX-
Connect to the host’s RX-
GND
Connect to the host’s GND
Drive
Connection
RX+
Connect to the host’s +
RX-
Connect to the host’s -
TX+
Connect to the host’s +
TX-
Connect to the host’s -
GND
Connect to the host’s GND
(NOTE: The RS-485 port on the drive is isolated from internal circuitry of the drive. So the GND of each drive’s RS-485 port
must be connected together. The first drive’s GND of the RS-485 port must be connected to the GND of RS-485 port on the
host PC or Controller)
