Connection Of Rs-485 Equipment - Panasonic HD-PLC DA-PU100 Administrator's Manual

2.4.5 Connection of RS-485 equipment

RS-485 cable wiring
PIN No.
1 A (Driver Out/Receiver In)
2 B (Inverted Driver Out/Inverted receiver In)
3 A (Driver Out/Receiver In)
4 B (Inverted Driver Out/Inverted receiver In)
5 SG (Signal Ground)
Wiring precautions
Use of shielded twisted pair wire is recommended.
•
Wire devices between devices in a point-to-point fashion.
•
• Connect a terminating resistor to the end of wiring. (This product has built-in terminating resistor)
• In addition to signal lines, connect the signal ground (SG). If there is no signal ground at the
connected device, do not connect.
Wiring Example
1 2
Signal name
3 4 5
DA-PU100 Series Administrator's Manual
1-pin
5-pin
RS-485 Terminal（attached）
Shielded twisted
pair wire
A
B
DA-PU100
SG
*Built-in
terminating
resistor
Shielded twisted
Shielded twisted
22
RS-485
Equipment
pair wire
RS-485
Equipment
pair wire
RS-485
Equipment