490NRP25300  加光纤中继器  适用于完全相同的两个网络的互连

制造商:施耐德电气

描述:modbus加光纤中继器，点对点

产品类型信息:modicon通讯

490NRP25300中继器（RP repeater）是工作在物理层上的连接设备。适用于完全相同的两个网络的互连，主要功能是通过对数据信号的重新发送或者转发，来扩大网络传输的距离。中继器是对信号进行再生和还原的网络设备：OSI模型的物理层设备。中继器是局域网环境下用来延长网络距离的，但是它属于网络互联设备，操作在OSI的物理层，中继器对在线路上的信号具有放大再生的功能，用于扩展局域网网段的长度（仅用于连接相同的局域网网段）。

490NRP25300中继器（RP repeater）是连接网络线路的一种装置，常用于两个网络节点之间物理信号的双向转发工作。中继器主要完成物理层的功能，负责在两个节点的物理层上按位传递信息，完成信号的复制、调整和放大功能，以此来延长网络的长度。由于存在损耗，在线路上传输的信号功率会逐渐衰减，衰减到一定程度时将造成信号失真，因此会导致接收错误。中继器就是为解决这一问题而设计的。它完成物理线路的连接，对衰减的信号进行放大，保持与原数据相同。一般情况下，490NRP25300中继器的两端连接的是相同的媒体，但有的中继器也可以完成不同媒体的转接工作。从理论上讲中继器的使用是无限的，网络也因此可以无限延长。事实上这是不可能的，因为网络标准中都对信号的延迟范围作了具体的规定，中继器只能在此规定范围内进行有效的工作，否则会引起网络故障。

490NRP25300  加光纤中继器  适用于完全相同的两个网络的互连

Manufacturer: Schneider Electric

Description :modbus plus fiber optic repeater, point-to-point

Product type information :modicon Newsletter

The 490NRP25300 repeater (RP repeater) is a connected device that works at the physical layer. It is applicable to the interconnection of two identical networks, and its main function is to expand the network transmission distance by resending or forwarding data signals. A repeater is a network device that regenerates and restores signals: a physical layer device of the OSI model. The repeater is used to extend the network distance in the local area network environment, but it belongs to the network interconnection device, operating in the OSI physical layer, the repeater has the function of amplifying and regenerating the signal on the line, and is used to extend the length of the LAN network segment (only used to connect the same LAN network segment).

The 490NRP25300 repeater (RP repeater) is a device that connects a network line and is commonly used for bidirectional forwarding of physical signals between two network nodes. The repeater mainly completes the function of the physical layer, is responsible for transmitting information on the physical layer of two nodes by bit, and completes the function of copying, adjusting and amplifying the signal, so as to extend the length of the network. Due to the loss, the signal power transmitted on the line will gradually decay, and when the attenuation is to a certain extent, the signal will be distorted, so it will lead to reception errors. The repeater is designed to solve this problem. It completes the connection of physical lines, amplifies the attenuated signal, and maintains the same data as the original. In general, the two ends of the 490NRP25300 repeater are connected to the same media, but some Repeaters can also complete the transfer of different media. Theoretically, the use of Repeaters is unlimited, and the network can therefore be extended indefinitely. In fact, this is not possible, because the delay range of the signal is specified in the network standard, and the repeater can only work effectively within the prescribed range, otherwise it will cause network failure.