NEF431020

FEDERAL PACIFIC NEF431020 MOLDED CASE 3P 20A 480V-AC CI

FEDERAL PACIFIC NEF431020 MOLDED CASE 3P 20A 480V-AC CI

6. 当完成编辑“主机请求表”时，单击确认按钮保存更改。

7. 在关闭“主机请求表”后，编辑一个用于特殊数据寄存器D8054 (传输等待时间)和错误检测的用户程序。

8. 将用户程序下载到CPU模块。

现在，设置Modbus主机完成。

Modbus从机设置

在 WindLDR 功能域设置中为端口 1 至端口 7 选择Modbus ASCII 从机或 Modbus RTU（远程终端设备）从机，则可使用 Modbus 从机通信。 当Modbus从机从Modbus主机接收请求时，Modbus从机根据请求读取或写入数据。 在用户程序的END处理时处理请求。

使用WindLDR设置Modbus从机通信用于Modbus ASCII或Modbus RTU。 由于这些设置与用户程序相关，所以必须在更改设置后将用户程序下载到MicroSmart。

1. 在WindLDR菜单栏中选择设置>功能设置>通信端口。此时出现通信端口的“功能设置”对话框。

2. 在“端口2”的“通信模式”下拉列表中，选择Modbus ASCII从机或Modbus RTU从机

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