TP48200E-H12C1 (Nepal, Ncell)
User Manual
3 Components
Issue 01 (2015-05-05)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
14
Port Type
Silk Screen
Description
ALM6
ALM7
ALM8
Communications port
COM
RS485 port
Communication Port
Table 3-10
COM communication port description
Communication
Port
Communications
Parameter
Communications
Protocol
Function
COM port
Baud rate: 9600 bit/s,
19200 bit/s
M/S and Modbus
protocol
Connects to
lower-level
devices such as
the battery
voltage
detector, DC
Air
Conditioner.
NOTE
The COM port supports the security mechanism.
Figure 3-11
Pins in the COM port
Table 3-11
Pin definitions for the COM port
Pin
Signal
Description
1
RX+
Receives data over RS485.
2
RX-
4
TX+
Sends data over RS485.