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The GEVMER-64 (also known as VMER64) is a high-performance VME64 Memory Extension Board and PMC Carrier Board from GE Fanuc Intelligent Platforms. Designed as a 6U VMEbus baseboard, the GE VMER-64 provides flexible system expansion by accommodating up to two single-width PMC (PCI Mezzanine Card) modules or one double-width module.

The GE VMER-64 serves as a critical bridge between the VME64 bus and PCI, enabling high-speed data transfer, memory expansion, and additional I/O capabilities in demanding industrial environments. It is widely used in real-time control systems, data acquisition, simulation, automation, and turbine control applications such as GE Speedtronic Mark VIe extensions. With its robust VME-to-PCI bridge and reliable design, the GE VMER-64 enhances overall system performance and scalability.

Model,GE VMER-64 / VMER64

Module Type,VME64 Memory Extension Board & PMC Carrier

Form Factor,6U VMEbus single or dual slot

PMC Slots,2 × single-width PMC or 1 × double-width PMC

Bus Standard,VME64 (IEEE 1014 Rev. D)

Bridge Chip,Universe CA91C142 (VME-to-PCI)

Memory Support,Up to 128 MB extension

Data Transfer,High-speed VME64 with low latency

Arbitration,4-level VMEbus arbiter (master/slave capable)

Connectivity,Two 96-pin male connectors for memory/I/O extension

Indicators,"Red LED (VMEbus interrupt), Yellow LED (VME access)"

Operating Temperature,-40°C to +70°C (industrial grade)

Power Consumption,Low power design

Compliance,"IEEE P1386 (PMC), VME64 standard"

Compatibility,"GE Fanuc / Abaco VME systems, Mark VIe extensions"

Operating the GE VMER-64 within a VMEbus system follows standard procedures:

Install the GE VMER-64 securely into the VME chassis slot and ensure proper backplane connection.

Mount the required PMC modules firmly onto the GE VMER-64 carrier board.

Power up the VME rack and verify the board is recognized through system diagnostics or front-panel LEDs.

Configure the VME address space, interrupt settings, and PMC modules using the host CPU software.

Monitor VMEbus activity, memory access, and PMC communication status during runtime.

During normal operation, the GE VMER-64 handles high-speed data transfer between VMEbus and PMC devices.

Use system tools to check LED indicators and diagnostic logs specific to the GE VMER-64 for any issues.

Proper installation is essential for the reliable performance of the GE VMER-64. Always de-energize the VME chassis and follow lockout/tagout procedures before handling. Use ESD-safe wrist straps and grounded workstations when inserting the GE VMER-64 or attaching PMC modules. Align the board carefully with slot guides and press firmly until fully seated. Ensure PMC modules are securely screwed in place. Connect any extension cables to the 96-pin connectors with proper strain relief. After installing the GE VMER-64, perform full system boot tests, VMEbus arbitration checks, and PMC communication verification before bringing the application online. Only qualified technicians experienced with VME systems should install or service the GE VMER-64.

Routine maintenance helps maximize the service life and performance of the GE VMER-64:

Visually inspect the GE VMER-64 for dust accumulation, loose PMC modules, or signs of overheating during scheduled outages.

Clean the board and vents gently with dry compressed air — never use liquids or solvents.

Check front-panel LEDs (red and yellow) and review VMEbus diagnostic logs daily for interrupt or access issues.

Verify power supply voltages and current draw remain within normal ranges.

Monitor data transfer performance and PMC module health through the host system.

Confirm all connectors and mounting hardware are secure.

Record any anomalies and schedule professional inspection, PMC upgrades, or board testing annually to sustain the high reliability of the GE VMER-64.

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