Rs-485 Port Specifications And Wiring; Rs-485 Port Specification Of Etos-Xp Series; Rs-485 Connection Diagram - AC&T System ETOS-XP Series User Manual

3.4.3. RS-485 port Specifications and Wiring

The following table shows the pin names, functions, and data direction of the RS-485
communication port.

[RS-485 Port Specification of ETOS-XP Series]

Pin No. Name
1-3, 6-8 TRX+
2-4, 7-9 TRX-
The following figure shows the RS-485 connection method between ETOS-XP and external device.
(TXD+)
(TXD-)
(RXD+)
(RXD-)
(TXD+)
(TXD-)
(RXD+)
(RXD-)
Signal Direction
↔ RS-485 Transmit/Receive Data(+)
↔ RS-485 Transmit/Receive Data(-)

[ RS-485 Connection Diagram ]

- 30 -
Function Description
ETOS-XP
1 (TXD+)
2 (TXD-)
3 (RXD+)
4 (RXD-)
5 (SG1)
6 (TXD+)
7 (TXD-)
8 (RXD+)
9 (RXD-)
10 (SG2)