AC&T System ETOS-XP Series, Руководство пользователя

Страница: 30 / 32

- 30 -
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 Signal Direction Function Description
1-3, 6-8 TRX+ ↔ RS-485 Transmit/Receive Data(+)
2-4, 7-9 TRX- ↔ RS-485 Transmit/Receive Data(-)
The following figure shows the RS-485 connection method between ETOS-XP and external device.
2 (TXD-)
3 (RXD+)
4 (RXD-)
6 (TXD+)
8 (RXD+)
9 (RXD-)
7 (TXD-)
5 (SG1)
10 (SG2)
(TXD+)
(TXD-)
(RXD+)
(RXD-)
(TXD+)
(TXD-)
(RXD+)
(RXD-)
1 (TXD+)
ETOS-XP
[ RS-485 Connection Diagram ]