G6450081A KJ2003X1-BB1工控卡件，EMERSON產(chǎn)品尺寸
特征■ PACSystems RX7i單槽形狀因子?！?具有奇偶校驗(yàn)的16 MB反射內(nèi)存。*■ 所有節(jié)點(diǎn)參數(shù)的軟件配置（無(wú)需跳線或開(kāi)關(guān)設(shè)置）。*■ 高速易用的2.12 Gbaud光纖網(wǎng)絡(luò)?！?運(yùn)行網(wǎng)絡(luò)不需要RX7i CPU處理?！?與VMIC 5565系列反射存儲(chǔ)器設(shè)備兼容的網(wǎng)絡(luò)?！?與高達(dá)300米/984.25英尺的多模光纖連接。
G6450081A KJ2003X1-BB1工控卡件■ 動(dòng)態(tài)數(shù)據(jù)包大小為4到64字節(jié)，由內(nèi)存交換模塊控制?！?最大網(wǎng)絡(luò)傳輸速率為43兆字節(jié)/秒（4字節(jié)數(shù)據(jù)包）到174兆字節(jié)/秒（64字節(jié)數(shù)據(jù)包）■ 可編程VMEbus中斷輸出。*■ 四個(gè)通用網(wǎng)絡(luò)中斷，每個(gè)中斷有32位數(shù)據(jù)。*■ 網(wǎng)絡(luò)錯(cuò)誤檢測(cè)?！?每個(gè)網(wǎng)絡(luò)最多256個(gè)節(jié)點(diǎn)。*■ 冗余傳輸模式操作。此可選模式降低了數(shù)據(jù)包被從網(wǎng)絡(luò)中刪除。*■ 可配置的網(wǎng)絡(luò)內(nèi)存偏移允許您根據(jù)他們使用的網(wǎng)絡(luò)地址空間中的16MB段。**在CPU冗余系統(tǒng)中作為冗余鏈路運(yùn)行時(shí)不可用。更新具有BA和更早版本的IC698RMX016模塊必須返回制造廠進(jìn)行替換網(wǎng)絡(luò)帶寬反射內(nèi)存網(wǎng)絡(luò)的最大帶寬為174MB/s。應(yīng)用程序必須避免傳輸FIFO滿的情況。您可以通過(guò)不使用多個(gè)節(jié)點(diǎn)來(lái)實(shí)現(xiàn)這一點(diǎn)同時(shí)傳輸大量數(shù)據(jù)?？梢员O(jiān)測(cè)LISR（區(qū)域2，偏移10h）的RX FIFO幾乎完全狀態(tài)（位09），以確定是否網(wǎng)絡(luò)正在變得飽和。有關(guān)網(wǎng)絡(luò)負(fù)載平衡的示例，請(qǐng)參閱PACSystems RX7i中的“優(yōu)化網(wǎng)絡(luò)帶寬”內(nèi)存交換模塊用戶手冊(cè)，GFK-2300。
Features
■ PACSystems RX7i single slot form factor.
■ 16 Mbytes reflective memory with parity.*
■ Software configuration of all node parameters (no jumper or switch settings required).*
■ High-speed easy-to-use 2.12 Gbaud fiber-optic network.
■ No RX7i CPU processing required to operate the network.
■ Network-compatible with VMIC 5565 family of reflective memory devices.
■ Connection with multimode fiber up to 300m /984.25ft.
■ Dynamic packet sizes of 4 to 64 bytes, controlled by the Memory Xchange module.
■ Maximum network transfer rate of 43 Mbyte/s (4 byte packets) to 174 Mbyte/s (64 byte packets)
■ Programmable VMEbus interrupt output.*
■ Four general purpose network interrupts with 32 bits of data each.*
■ Network error detection.
■ Up to 256 nodes per network.*
■ Redundant transfer mode operation. This optional mode reduces the chance of a data packet being
dropped from the network.*
■ Configurable network memory offset allows you to assign nodes on a network to groups according to the
16MB segment in the network address space that they use.*
*Not available when operating as a redundancy link in a CPU redundancy system.Updates
IC698RMX016 Modules with versions -BA and earlier must be returned to the manufacturing facility for
replacement.
Network Bandwidth
The maximum bandwidth of the reflective memory network is 174Mbytes/s. The application must avoid a
situation where the transmit FIFO becomes full. You can accomplish this by not having multiple nodes
transmit a large amount of data at the same time.
The RX FIFO Almost Full status (bit 09) of the LISR (Region 2, offset 10h) can be monitored to determine if
the network is becoming saturated.
For an example of network load balancing, refer to “Optimizing Network Bandwidth” in the PACSystems RX7i
Memory Xchange Modules User’s Manual, GFK-2300.
