Rs232-Rs485-Eth Interface; Version With Rs232-Rs485-Eth Interface; Connections Of The Ethernet Connector - Advantech SmartFlex SR304 User Manual

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5.10.3 RS232-RS485-ETH interface

This interface board includes a panel RJ45 connector for Ethernet connection (ETH2 in

the figure), and four-pin and three-pin terminal block connectors for RS232 and RS485 con-

nection. The insulation strength is up to 2.5 kV between the ETH2 and RS485 interfaces and

from the rest of the router, too. The RS232 interface is not insulated from the rest of the router.

State indication is displayed by LEDs above each connector, as shown in the table below.

These router versions comply with the standards and temperature ranges stated in Chap. 7.1.

Figure 45: Version with RS232-RS485-ETH interface

Connection of ETH connector:

Signal

TXD+

TXD-

RXD+

—

RXD-

—

Table 25: Connections of the Ethernet Connector

Description

Transmit Data – positive pole

Transmit Data – negative pole

Receive Data – positive pole

—

Receive Data – negative pole

—

Figure 46: Ethernet connector

SmartFlex SR304

Direction

Input/Output

—

Input/Output

—

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