RTS XCP-48-RJ45 Especificaciones descargar pdf (Pagina 34)

34 Chapter 8 EIA-485 Asynchronous Interface

Digi EIA-485 Connector Wiring

Two wires (one twisted pair) are required for each signal, a positive lead

("+"), and a negative lead ("-"). The "+" leads at one end of the cable must

be connected to the "+" leads at the other end, and the "-" leads at one end

must be connected to the "-" leads at the other end.

Incorrect wiring could result in damage to the connected devices. The

following tables show the pin configurations for the EIA-485 versions of

Digi DB-9 and RJ-45 10 pin connectors.

RJ-45 Pinouts

DB-9 Pinouts

RJ-45 Pin

485 Half

Duplex

485 Full

Duplex

Signal Description

1 TxD- TxD- Transmitted Data (-)

2 RxD- RxD- Received Data (-)

3 n/a RTS+ Request To Send (+)

4 GND GND Chassis Ground

5 TxD+ TxD+ Transmitted Data (+)

6 RxD+ RxD+ Received Data (+)

7 SG SG Signal Ground

8 n/a CTS+ Clear To Send (+)

9 n/a RTS- Request To Send (-)

10 n/a CTS- Clear To Send (-)

DB-9

Screw

Term

485 Half Duplex

485 Full

Duplex

Signal Description

1 9 Not used CTS- Clear To Send (-)

2 6 RxD+ RxD+ Received Data (+)

3 3 TxD+ TxD+ Transmitted Data (+)

4 2 Not used RTS- Request To Send (-)

5 5 GND GND Chassis Ground

6 7 RxD- RxD- Received Data (-)

7 1 Not used RTS+ Request To Send (+)

8 8 Not used CTS+ Clear To Send (+)

9 4 TxD- TxD- Transmitted Data (-)

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 151 152

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RTS XCP-48-RJ45 Especificaciones Pagina 34

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