文件编号：
NDT2920002
文件版本：
5
地址：上海市浦东新区申江南路
2000
号
邮编：
201315
电话：
(021)68586699
传真：
(021)23025796
第
12
页
共
39
页
3.2.2.4
NDM3E 控制器通讯功能 Communication function of NDM3E controller
NDM3E 通讯功能通过外挂式通讯模块来实现“四遥”功能。该通讯模块可将断路器的相关信息经现场
总线传至上位机，上位机通过通讯模块下发指令操作电动操作机构，从而控制断路器的合、分。
The communication function of NDM3E can achieve “Four-remoteness” functions through the
external hanging communication modules. The communication module can transfer relevant
information of the breaker to upper computer through on-site bus, and then the upper computer
can use the instructions released by the communication module to operate the motor-operated
mechanism, and achieve closing and opening of the control breaker.
通讯模块上传的信息包括：Information uploaded by the communication module includes:
² 断路器设备代码；Equipment code of the breaker;
² 断路器各参数设定值；Setting values of the breaker’s parameters;
² 断路器的合、分状态；Closing and opening state of the breaker;
² 通过断路器每极的实时电流。Real-time current passing through each pole of the breaker
NDM3E 断路器通讯接口的现场总线规约为：Modbus—RTU。
The on-site bus protocol of NDM3E breaker’s communication port: Modbus—RTU
注：通讯型断路器（T 型、GT 型）默认波特率为 9600、通讯地址为 3。
Notes: The default baud rate of the communication breaker (T type and GT type) is 9600, and the communication
address is 3.
3.2.2.4.1 通讯模块 Communication module
图 2：通讯模块实物图 图 3：通讯背包安装尺寸图
Fig.2: Entity figure of the communication module
Fig.3: Dimension figure for installation of the communication backpack
表 3：通讯模块端子及其作用表
Table 3: Communication module terminal and its function
端子代号
Terminal code
连接位置
Connection position
输入输出（IO）
Input and output (I/O)
D1
电源 DC24V（+）
Power supply DC24V (+)
输入 Input
D2
电源 DC24V（-）
Power supply DC24V (-)
D3
/
D4
电操机构控制“OFF”端
“OFF” terminal controlled by
the motor-operated mechanism
输出（DO）
Output (DO)
D5
电操机构控制“COM”端
“COM” terminal controlled by
the motor-operated mechanism
D6
电操机构控制“ON”端
“ON” terminal controlled by
the motor-operated mechanism
