Communication Ports On The Emu; Rs485 Serial Port; Figure 2-6 Pins Of The Rs485 Serial Port Socket - Huawei EMU User Manual

EMU
User Guide
Silkscreen
SW12A,
SW12B,
SW24A,
SW24B

2.4 Communication Ports on the EMU

The EMU provides the RS485 and RS232 ports for the communication between the EMU and
the BTS/NodeB.

2.4.1 RS485 Serial Port

This describes the RS485 serial port on the EMU. Two RS485 serial ports are used in active/
standby mode for the communication between the EMU and the BTS/NodeB. The RS485 serial
port is suitable for a dedicated serial port that has a DB-9 male connector.
2.4.2 RS232 Serial Port
This describes the RS232 serial port on the EMU. An RS232 serial port is an RJ-45 socket and
suitable for a dedicated serial port cable that has an RJ-45 plug.
2.4.1 RS485 Serial Port
This describes the RS485 serial port on the EMU. Two RS485 serial ports are used in active/
standby mode for the communication between the EMU and the BTS/NodeB. The RS485 serial
port is suitable for a dedicated serial port that has a DB-9 male connector.
For the position of the RS485 serial port on the EMU, see
Figure 2-6

Figure 2-6 Pins of the RS485 serial port socket

Issue 13 (2009-12-30)
Function
Thirty-two bits for Boolean
signal input
NOTE
The configurations described in this document apply only to the sensors provided by Huawei. For sensors
of other types, see their respective instructions.
shows the pins of the RS485 serial port socket.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2 Overview of the EMU
Setting
Bits 1-8 of the DIP switch SW12A
l
correspond to input signals 1-8.
Bits 1-8 of the DIP switch SW12B
l
correspond to input signals 9-16.
Bits 1-8 of the DIP switch SW24A
l
correspond to input signals 17-24.
Bits 1-8 of the DIP switch SW24B
l
correspond to input signals 25-32.
When a bit is set to ON, it represents high-
l
level alarms.
When a bit is set to OFF, it represents low-
l
level alarms or is not used.
2.2 Exterior of the EMU.
2-7