Expansion port RS232
Wieland Electric GmbH | BA000917 | 08/2021 (Rev. C)
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6
EXPANSION PORT RS232
6.1
Description
The expansion port RS232 is created as expansion port which enables to use of the next hardware
interface of Wieland routers for next signal processing. This interface is physically connected to the
RJ45 connector on the appropriate router. The expansion port RS232 is internal supplies from ap-
propriate router. Against bus overload the expansion port RS232 is protect.
Expansion port RS232 is only possible at PORT1 and PORT2.
6.2
Expansion port connection
Panel socket RJ45 (RS232 – DCE - Data Communication Equipment).
Pin
Signal
Description
Direction
1
RTS
Request To Send
Input
2
CTS
Clear To Send
Output
3
DTR
Data Terminal Ready
Input
4
DSR
Data Set Ready: Connect to +3 V trought R 330 Ohm Output
5
GND
Signal ground
6
RXD
Receive data
Output
7
CD
Carrier Detect
Output
8
TXD
Transmit Data
Input
Figure 12: RS232 port connector
Example of the PC connection to router
Figure 13: Meter connection to router
Example of the PC connection to router
Figure 14: PC connection to router
Cable KD2 is connected to serial port PC (example COM1)
NOTICE
