GE VMIPMC-5565 Reflective Memory PMC Card

The GE Fanuc VMIPMC-5565 serves as the primary VMIPMC-5565 Reflective Memory PMC Node Card utilized to execute real-time, deterministic data sharing across distributed control systems. Operating as a PCI Mezzanine Card (PMC), it enables multiple host processors to maintain an identical, localized shared memory map across a high-speed fiber-optic network. The hardware subsystem replicates memory writes natively at the silicon layer, completely bypassing standard network protocols and operating system software stacks to eliminate CPU overhead.

Hardware Specifications

Industrial Control & Deterministic Networks

• Backplane Bus Communication Velocity and Data Replication The card features a dedicated onboard network engine coupled to high-speed SDRAM. When the host local processor writes an updated variable to this designated memory segment, the card's internal logic intercepts the data packet parallel to the standard bus cycle and serializes it over the fiber-optic link, broadcasting the update to all downstream nodes inside a fixed, sub-microsecond window.
• Profinet / EtherNet/IP Deterministic Networks and Optical Isolation While standard Ethernet protocols rely on collision detection and packet routing rules, the VMIPMC-5565 implements a completely deterministic hardware token infrastructure. The onboard optical transceivers provide absolute galvanic isolation between distinct computing chassis, suppressing common-mode voltage fluctuations, electrical noise injection, and ground loop currents across the distributed control network.

Frequently Asked Questions

Q: What specific hardware behaviors or error parameters manifest if a fiber-optic link breaks in a reflective memory ring topology?

A: A break in the physical fiber-optic path disrupts the token loop, immediately stopping data propagation past the point of the break. The onboard transceiver registers a loss of light signal, flags an unmasked ring-error interrupt status bit to the host CPU, lighting the red error LED on the card faceplate, while the intact upstream nodes continue updating until a loop timeout is reached.

Q: Is this reflective memory mezzanine card hot-swappable while the host computer carrier board is fully energized?

A: No, the board does not support hot-swapping. Because it mounts directly as a mezzanine card onto a carrier board or single-board computer (SBC), extracting or inserting the module while the host backplane is active will cause localized voltage surges, corrupt active address/data lines, and cause permanent component destruction to the internal bus logic.