VE3006 12P3439X012工控模塊,EMERSON產(chǎn)品尺寸
冗余內(nèi)存交換（RMX）模塊作為反射內(nèi)存上的節(jié)點運行網(wǎng)絡或作為冗余RX7i系統(tǒng)中CPU之間的專用鏈路。當RMX為它不用作冗余系統(tǒng)中的鏈路，功能與IC698CMX016相同單元網(wǎng)絡中的每個節(jié)點都可以是與兼容的任何反射內(nèi)存設備5565家庭。每當數(shù)據(jù)寫入一個節(jié)點時，網(wǎng)絡上的所有節(jié)點都是使用新數(shù)據(jù)自動更新。
VE3006 12P3439X012工控模塊當用作反射內(nèi)存網(wǎng)絡上的節(jié)點時，RMX模塊提供確定性在高速光纖網(wǎng)絡上的PLC和其他計算設備之間共享數(shù)據(jù)。反射內(nèi)存網(wǎng)絡最多可包含256個節(jié)點。反射內(nèi)存網(wǎng)絡中的每個節(jié)點使用光纖連接在菊花鏈環(huán)路中光纜。第一個節(jié)點的發(fā)射器與第二個節(jié)點的接收器相連。這個第二個節(jié)點的發(fā)射器與第三個節(jié)點的接收器相連，依此類推，直到環(huán)路結束在第一個節(jié)點的接收器處完成。在CPU冗余系統(tǒng)中使用時，RMX模塊提供傳輸數(shù)據(jù)的路徑在冗余系統(tǒng)中的兩個冗余CPU之間。完整的通信路徑由一次機組中的一個RMX、二次機組中的一個RMX和兩個高速相互連接的光纖電纜。這必須是一個兩節(jié)點環(huán)：沒有其他反射內(nèi)存節(jié)點允許成為該光纖網(wǎng)絡的一部分。GE強烈建議使用兩個冗余鏈路（共四個RMX模塊）已配置并安裝?？蛇x地，可以為單個冗余鏈路（a）配置系統(tǒng)共兩個RMX模塊）。當RMX用作冗余系統(tǒng)中的鏈路時，它不能用作通用內(nèi)存交換模塊。有關PACSystems CPU操作的詳細信息冗余系統(tǒng)，請參閱PACSystems熱備CPU冗余用戶手冊，GFK-2308。PACSystems RX7i主機架最多支持四個內(nèi)存交換模塊RMX016和CMX016模塊的組合。最多可以使用兩個RMX模塊配置為冗余通信鏈路。
The Redundancy Memory Xchange (RMX) module operates as a node on a reflective memory
network or as a dedicated link between CPUs in a redundant RX7i system. When the RMX is
not being used as a link in a redundancy system, it is functionally identical to the IC698CMX016
module. Each node in the network can be any reflective memory device that is compatible with
the 5565 family. Whenever data is written to one node, all nodes on the network are
automatically updated with the new data.
When used as a node on a reflective memory network, the RMX module provides deterministic
sharing of data among PLCs and other computing devices on a high-speed fiber optic network.
A reflective memory network can contain up to 256 nodes.
Each node in the reflective memory network is connected in a daisy-chained loop using fiber
optic cables. The transmitter of the first node is tied to the receiver of the second. The
transmitter of the second node is tied to the receiver of the third node, and so on, until the loop
is completed at the receiver of the first node.
When used in a CPU redundancy system, the RMX modules provide a path for transferring data
between the two redundancy CPUs in the redundant system. A complete communications path
consists of one RMX in the primary unit, one RMX in the secondary unit, and two high-speed
fiber optic cables connecting them to each other. This must be a two-node ring: no other
reflective memory nodes are allowed to be part of this fiber optic network.
GE strongly recommends two redundancy links (a total of four RMX modules) be
configured and installed. Optionally, systems can be configured for a single redundancy link (a
total of two RMX modules).
When the RMX is being used as link in a redundancy system, it cannot be used as a generalpurpose Memory Xchange module. For details on the operation of a PACSystems CPU
redundancy system, refer to the PACSystems Hot Standby CPU Redundancy User’s Manual,
GFK-2308.
