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本手冊(cè)介紹Modicon光纖中繼器(部件號(hào)490NRP253、490NRP254、490NRP954、NWFR85D200和NWFR89D200)的安裝和操作方法。
中繼器具有以下特點(diǎn):
型號(hào)490NRP253在兩個(gè)Modbus Plus連接之間提供光纖點(diǎn)對(duì)點(diǎn)鏈接。中繼器包含一個(gè)光纖收發(fā)器和一個(gè)Modbus Plus電接口。
型號(hào)490NRP254和NWFR85D200提供Modbus Plus節(jié)點(diǎn)或網(wǎng)段之間的光纖總線和電氣線降鏈路。每個(gè)中繼器包含兩個(gè)光纖收發(fā)器和一個(gè)電Modbus Plus接口。
型號(hào)490NRP954和NWFR89D200提供遠(yuǎn)程I/O節(jié)點(diǎn)或網(wǎng)段之間的光纖總線和電氣線降鏈路。每個(gè)中繼器包含兩個(gè)光纖收發(fā)器和一個(gè)電子遠(yuǎn)程I/O接口。

除工作功率和安裝方式外，Modbus Plus中繼器型號(hào)490NRP254和NWFR85D200相同，遠(yuǎn)程I/O型號(hào)490NRP954和NWFR89D200相同。

Modbus Plus網(wǎng)絡(luò)的電氣連接是通過標(biāo)準(zhǔn)的Modbus Plus 9針“D”連接器。連接到遠(yuǎn)程I/O網(wǎng)絡(luò)是通過一個(gè)“F”式連接器和外部Modicon遠(yuǎn)程I/O 14db抽頭。中繼器的電端口與其他Modbus Plus或Remote I/O設(shè)備具有相同的網(wǎng)絡(luò)連接、規(guī)格和限制，必須相應(yīng)地對(duì)待。請(qǐng)參考Modbus Plus系統(tǒng)規(guī)劃和安裝指南(GM-MBPL-001)或984遠(yuǎn)程I/O規(guī)劃指南(GM-0984-RIO)，了解有關(guān)規(guī)劃網(wǎng)絡(luò)配置和網(wǎng)絡(luò)電纜安裝的信息。

This manual describes how to install and operate Modicon Fiber Optic Repeaters (Part Numbers 490NRP253, 490NRP254, 490NRP954, NWFR85D200, and NWFR89D200).
The repeaters have the following characteristics:
Model 490NRP253 provides a Fiber Optic Point-to-Point link between two Modbus Plus connections. The Repeater contains one Fiber Optic Transceiver and one electrical interface for Modbus Plus.
Models 490NRP254 and NWFR85D200 provide Fiber Optic Bus and electrical Line-Drop links between Modbus Plus nodes or network segments. Each Repeater contains two Fiber Optic Transceivers and one electrical Modbus Plus interface.
Models 490NRP954 and NWFR89D200 provide Fiber Optic Bus and electrical Line-Drop links between Remote I/O nodes or network segments. Each Repeater contains two Fiber Optic Transceivers and one electrical Remote I/O interface.

Except for their operating power and mounting methods, Modbus Plus repeater models 490NRP254 and NWFR85D200 are identical, and Remote I/O models 490NRP954 and NWFR89D200 are identical.

Electrical connection to the Modbus Plus network is through the standard Modbus Plus 9–pin “D” connector. Connection to the Remote I/O network is through an “F”–style connector and external Modicon Remote I/O 14 db tap. The electrical port of the Repeater has the same network connections, specifications and restrictions as other Modbus Plus or Remote I/O devices, and must be treated accordingly. Refer to the Modbus Plus System Planning and Installation Guide (GM–MBPL–001), or the 984 Remote I/O Planning Guide (GM–0984–RIO) for information regarding planning your network configuration and the installation of the network electrical cable.