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Manual
Kuhse Gateway Module
KGM - KEA
HB-KGM-KEA_EN Version 01
Date: 23rd. May 2017
Page 13 of 75
5.4
Serial interfaces
The RS232 and RS485 serial interfaces are each available via identical plug-in connectors.
However, the connector pins are not double-assigned, i.e. it is possible to use the respective
interfaces simultaneously on one connector.
5.4.1
COM A
Devices that communicate via the RS232 or RS485 (half-duplex) interfaces can be connected to
serial port A. The interfaces are isolated.
5.4.2
COM A - RS232
Connector "COM A" - Serial interface RS232
Pin
Function
1
RS232 A - RXD
2
RS232 A - TXD
4
RS232 A - RTS
7
RS232 A - CTS
9
RS232 A - GND
3,5,6,8 RS232 A - CTS
Connector Sub-D9; male, 5 x 0.25mm2
The following parameters can be configured for the serial interface COM A - RS232 A:
Activate/deactivate interface
Baud rate, data bits, parity, stop bits, sequence control
If the interface is active, the green "RS232 A" LED illuminates.