VMIC VMEbus High-Voltage I/O, NI PCI DAQ and Motorola CompactPCI Spare Parts Sourcing Guide
Industrial computing and measurement systems built on VMEbus, CompactPCI, and legacy PCI architectures continue to operate in test facilities, process plants, power generation environments, and defense applications worldwide. When boards fail in these systems, whether a VMIC high-voltage digital I/O module, a National Instruments analog output or Foundation Fieldbus card, or a Motorola CompactPCI processor — replacement sourcing from specialist industrial MRO suppliers is the only viable path.
This guide covers the most in-demand parts from this category currently driving sourcing requests, with confirmed specifications, application context, and direct links to availability at Industrial Partner.
Industrial Partner stocks VMIC VMEbus I/O boards, National Instruments PCI and PCMCIA interface cards, and Motorola CompactPCI processor modules — including discontinued and hard-to-find variants. Browse VMIC modules · Browse NI components · Request a quote
VMIC VMIVME-2534 — High-Voltage Digital I/O with P2 I/O
The VMIVME-2534 is VMIC's 32-bit high-voltage digital input/output board with P2 rear I/O connectivity — one of the highest-value VMEbus I/O modules in the VMIC catalog and among the most actively searched VMIC parts. The high-voltage rating and P2 rear I/O configuration make the VMIVME-2534 suitable for industrial environments where field signals exceed TTL levels and rear-panel wiring access is required.
High-voltage VMEbus I/O boards like the VMIVME-2534 are used in applications where the VMEbus system must interface directly with 24VDC, 48VDC, or 60VDC industrial signal levels from sensors, actuators, and external control systems — signal levels that would damage standard TTL-level I/O boards without proper isolation or buffering. The VMIVME-2534 handles these signal levels natively.
Browse VMIC VMIVME-2534 and related high-voltage digital I/O boards at Industrial Partner.
VMIC VMIVME-2536 — 32-Channel Optically Coupled Digital I/O with Built-In Test
The VMIVME-2536 is VMIC's 32-channel optically coupled digital I/O board with built-in self-test (BIST) capability. Optical isolation between the VMEbus backplane and field signals is the critical feature here: it protects the VMEbus system electronics from ground loops, voltage transients, and high common-mode voltages that are common in industrial field wiring environments.
The built-in test feature allows the board to execute a self-diagnostic routine that verifies the operational status of each optocoupler channel — a significant advantage in high-availability systems where partial channel failures must be detected before they affect process control or test system integrity.
The VMIVME-2536 is widely deployed in:
The VMIVME-2536 carries a high replacement value due to its safety-critical applications. Browse VMIC optically coupled I/O boards — including VMIVME-2536 — at Industrial Partner.
National Instruments PCI-6722 — 8-Channel 13-Bit Analog Output DAQ Card
The National Instruments PCI-6722 is a PCI-format analog output data acquisition card providing eight channels of 13-bit analog output at a maximum aggregate update rate of 800 kS/s. It is designed for applications requiring simultaneous multi-channel waveform generation, process setpoint control, servo drive command output, and stimulus signal generation in automated test systems.
The PCI-6722 uses NI-DAQmx driver software and is compatible with LabVIEW, LabWindows/CVI, and Measurement Studio development environments. Its 13-bit resolution and 800 kS/s update rate make it suitable for medium-performance waveform generation and process control applications where single-board analog output capability is required.
Key PCI-6722 specifications:
The PCI-6722 is a legacy NI product — NI has transitioned its analog output DAQ portfolio to USB, PCIe, and PXI form factors. PCI-6722 boards are no longer manufactured but remain in active service in industrial PC-based test and control systems still using PCI-slot host computers.
Browse National Instruments PCI analog output cards — including PCI-6722 — at Industrial Partner.
National Instruments PCMCIA-FBUS — Foundation Fieldbus H1 PCMCIA Interface
The National Instruments PCMCIA-FBUS is a PCMCIA Type II Foundation Fieldbus H1 communication interface card for laptop and portable computing systems. It provides a single H1 Foundation Fieldbus communication channel, enabling portable PC-based field configuration, commissioning, and diagnostic operations on Foundation Fieldbus process instrument networks.
Foundation Fieldbus (FF H1) is the IEC 61158 standard digital communication protocol used in process automation to connect intelligent field devices — flow transmitters, pressure transmitters, level gauges, control valves — to DCS systems and controllers. The PCMCIA-FBUS allows a portable laptop to connect directly to an FF H1 segment for:
The PCMCIA-FBUS (also identified as PCMCIA-FBUS/2 or PCMCIA-FBUS Series 2 in later revisions) requires NI-FBUS software for Windows and is compatible with all standard FF H1 segment topologies. It has been superseded by NI's USB-8486 Foundation Fieldbus interface, but PCMCIA-FBUS units remain in use at sites where laptop computers with PCMCIA slots are the established tooling standard.
Browse National Instruments Foundation Fieldbus interface cards — including PCMCIA-FBUS and PCMCIA-FBUS/2 variants — at Industrial Partner.
Motorola CPV8540B — CompactPCI Hot-Swap PMC Carrier Board
The Motorola CPV8540B (Emerson Network Power CPV8540B) is a 6U, single-width CompactPCI processor carrier board using the Freescale MPC8540 PowerQUICC III processor — a 64-bit, high-performance embedded PowerPC processor designed for communications, networking, and industrial computing applications. The CPV8540B provides dual PMC (PCI Mezzanine Card) slots for I/O expansion, with both front and rear I/O connectivity.
The CPV8540B supports hot-swap CompactPCI operation, allowing the board to be inserted and removed from an active CompactPCI chassis without powering down the system — a critical feature in high-availability industrial and telecommunications computing environments. Rear I/O connectivity via J3 and J5 allows use in both standard CompactPCI and H.110 CT bus backplanes.
The MPC8540 processor at the core of the CPV8540B is a highly integrated system-on-chip combining the PowerPC e500 core, DDR memory controller, PCI-X interface, and integrated communications processors — delivering the combination of processing performance and I/O integration required in embedded industrial applications.
Browse Motorola CompactPCI processor boards — including CPV8540B — at Industrial Partner.
Sourcing Legacy VMEbus, CompactPCI, and NI DAQ Components
The VMIVME-2534, VMIVME-2536, NI PCI-6722, PCMCIA-FBUS, and Motorola CPV8540B all represent distinct technical families, but they share identical sourcing challenges in today's industrial MRO market:
Industrial Partner: Our technical sourcing team specializes in legacy VMEbus, CompactPCI, and NI DAQ components. We confirm hardware revisions before dispatch and can advise on driver compatibility for NI interface cards. Browse VMIC I/O boards · Browse NI components · Browse Motorola boards · Request a quote
Conclusion
The VMIC VMIVME-2534 high-voltage digital I/O board, VMIVME-2536 optically coupled I/O board, National Instruments PCI-6722 analog output card, PCMCIA-FBUS Foundation Fieldbus interface, and Motorola CPV8540B CompactPCI processor each represent a specific technical capability that active industrial systems continue to depend on, despite all being discontinued by their original manufacturers.
For engineers and procurement teams managing these systems, the combination of exact hardware revision matching, driver compatibility awareness, and access to verified physical stock is what determines whether a replacement arrives quickly and works correctly on first installation. Industrial Partner provides all three.
Industrial Partner Genuine replacement stock for VMIC, National Instruments, and Motorola legacy industrial computing components. Fast quotes, worldwide shipping. Browse VMIC modules · Browse NI components · Browse Motorola boards · Request a quote
