Rs232-Rs485/422 Interface; Version With Rs232-Rs485/422 Interface; Rs232 Connector; Connection Of Rs232 Connector - Advantech SmartFlex SR310 User Manual

5.10.2 RS232-RS485/422 interface

These interfaces are physically connected through the 5-pin and 4-pin terminal block con-
nectors. The insulation strength is up to 2.5 kV. Attention, connectors are not isolated from
each other! No state indication is displayed for this interface. These router versions comply
with the standards and temperature ranges stated in Chap. 7.1.
When connecting counterpart terminal block connectors (included in package with the router),
use cables with nominal cross section 0.2 to 1.0 square mm (30 to 16 AWG). Recommended
stripping length is 5 mm. For M2 captive screws the screw driver 0.5 x 3 mm is recommended.
Tighten the screws with 0.3 Nm torque.

Connection of RS232 connector:

Both connectors (RS232 and RS485/422) have a common ground connection.
LUCOM GmbH — Flößaustr. 22a — 90763 Fürth — Tel.: +49 911/ 957 606 00 — E-Mail: info@lucom.de — www.lucom.de
Figure 43: Version with RS232-RS485/422 interface
Pin Signal Description
1 CTS Clear To Send
2 RTS Request To Send
3 GND Signal ground
4 RXD Receive Data
5 TXD Transmit Data
Table 23: Connection of RS232 connector
Figure 44: RS232 connector
SmartFlex SR310
Direction
Output
Input
—
Input
Output
35