Interfaces Description; Rs232 Interface; Version With Rs232 Interface; Connection Of Rs232 Connector - Advantech SmartFlex SR307 User Manual

5.9 Interfaces Description

Besides the basic version of SmartFlex router there are available versions with one of the
following interfaces:

RS232 interface

RS232-RS485/422 interface
SWITCH interface
RS232-RS485-ETH interface
5.9.1 RS232 interface
This interface is physically connected through the RJ45 connector. The RS232 converter is
protected against bus overloads. State indication is displayed by LEDs on the RJ45 connector,
as shown in the table below. This router version complies with the standards and temperature
ranges stated in Chap. 7.1.
Connection of connector:
Pin Signal Description
1 RTS Request To Send
2 CTS Clear To Send
3 DTR Data Terminal Ready
4 DSR Data Set Ready – connect to +3 V through R 330 Ohm
5 GND Signal ground
6 TXD Transmit Data
7 CD Carrier Detect
8 RXD Receive Data
Figure 43: Version with RS232 interface
Table 18: Connection of RS232 connector
28
SmartFlex SR307
Direction
Input
Output
Input
Output
Output
Output
Input