Description

Brief Product Description

The GE Fanuc IC698RMX016 is a high-speed Redundancy Memory Xchange (RMX) module designed for PACSystems RX7i controllers.² It enables deterministic data synchronization between redundant CPU pairs using fiber optic reflective memory technology to ensure bumpless control transfer.

​Product Description

High-Speed Redundancy Synchronization

The GE Fanuc IC698RMX016 serves as the backbone for high-availability configurations within the PACSystems RX7i platform.³ By acting as a dedicated node in a reflective memory network, this module facilitates the instantaneous transfer of critical control data between primary and secondary CPU racks. This synchronization is paramount for industrial processes that cannot tolerate downtime, as it allows the standby processor to assume control seamlessly if the primary unit fails. To optimize system performance and interrupt handling, engineers typically install the RMX module in slots 3 or 4 of the RX7i backplane.

Reflective Memory and Fiber Optic Performance

To maintain low-latency communication, the IC698RMX016 utilizes advanced fiber optic technology featuring LC-type connectors. The module carries 16 MB of dedicated SDRAM, which supports a wide range of data packet sizes from 4 to 64 bytes.⁴ This flexibility ensures that the system manages network traffic efficiently across as many as 256 nodes.⁵ Because it uses light-based transmission, the RMX link remains immune to the electromagnetic interference (EMI) often found in heavy industrial environments. The module further ensures signal integrity by adhering to IEC 61754-20 standards, maintaining a low insertion loss of only 0.35 dB.⁶

Automated Configuration and Maintenance

Operational efficiency increases with the IC698RMX016 because it eliminates the need for manual parameter entry. The host RX7i CPU automatically pushes configuration settings to the RMX module upon startup, simplifying the commissioning process. Furthermore, the hardware includes a manual toggle switch and bright LED status indicators to manage and monitor the redundancy role.⁷ These physical controls allow technicians to perform role switching safely while avoiding accidental activation. Compatibility requires PACSystems firmware version 2.00 or higher and programming via the Logic Developer software suite.⁸

Technical Specification Table