GE PACSystems* RX3i IC695RMX228-ABAA Redundancy Memory Xchange Module

GE PACSystems* RX3i IC695RMX228-ABAA Redundancy Memory Xchange Module

OVERVIEW

The PACSystems* Redundancy Memory Xchange (RMX) module operates as a node on a reflective memory network or as a dedicated link between CPUs in an RX3i Hot Standby CPU Redundancy system. When the RMX is not being used as a link in a redundancy system, it is functionally identical to the IC695CMX128 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.

Specifications

Packet size：Dynamic, automatically controlled by RMX128/RMX228 module

User memory：128MB SDRAM

Connectors：

■ Fiber-optic LC type, conforms to IEC 61754-20 

■ Insertion loss: refer to cable/connector specifications 

■ Return loss: refer to cable/connector specifications

Features 

■ PACSystems RX3i single slot form factor. 

■ 128 Mbytes reflective memory.† 

■ Software configuration of all node parameters (no jumper or switch settings required).† 

■ High-speed easy-to-use 2.12 Gbaud fiber-optic network. 

■ No RX3i CPU processing required to operate the network. 

■ When not used in a Redundant pair, network-compatible with VMIC 5565 family of reflective memory devices, including the RX7i CMX/RMX module (hub required when mixing Multi Mode and Single mode modules on the same network). 

■ Connection with single-mode fiber up to 10 km/6.2 mi. A single mode card cannot directly connect to a multimode card. 

■ Dynamic packet sizes of 4 to 68 bytes, controlled by the RMX128/RMX228 module when configured to operate as a CMX128 module. 

■ Programmable module interrupt output. 

■ Four general-purpose network interrupts with 32 bits of data each.†o 

■ 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.†

Functions

Redundant System Support:

The IC695RMX228 module is designed for redundant systems and is used to provide dedicated memory swapping functionality in redundant configurations of RX3i CPU pairs.

The module can act as a reflective memory device for sharing data between redundant CPUs, ensuring high system availability and data consistency.

Reflective Memory Networking:

The module is able to be connected via a network connection to act as a node on a Reflective Memory Network for data sharing between different devices and PLCs.

It supports the connection of up to 256 nodes and establishes high-speed communication through optical fibre network, with a transmission speed of up to 2.12 Gbaud (Note: this speed may vary depending on specific models and configurations, please refer to the official documentation for accurate information).

Indicator Lights and Role Switching:

Module comes with indicator lights to indicate module status and network status.

Equipped with role switches that allow the module to operate as a primary or backup module in a redundant system.

Hardware and Electrical Characteristics:

Uses LC type connectors, these usually have fibre optics with zirconium ceramic inserts.

Requires specific power supplies such as 580 mA @ 3.3 VDC and 220 mA @ 5 VDC.

Equipped with 128 MB (or more, depending on model) of SDRAM user memory.