Greenspring CPCI-200 Modules: CPCI-200 W/ IP-OCTAL 485 MFIO-200 / IP-OPTO INTERRUPTER MFIO-200 0021-42777 PCB ASSY —

Technical Dossier

Product Details And Specifications

Greenspring CPCI-200 Series: Comprehensive Module Range and Technical Overview

The Greenspring CPCI-200 series represents a mature, field-proven line of CompactPCI (cPCI) mezzanine I/O modules engineered for deterministic real-time control in heavy industrial environments. Deployed across chemical processing plants, petroleum refineries, nuclear power generation facilities, and defense-grade embedded computing platforms, the CPCI-200 architecture leverages the IP (Industry Pack) mezzanine standard to deliver modular, hot-swappable I/O expansion on a 3U or 6U CompactPCI carrier. The series has accumulated significant installed base in applications where long-term hardware availability, signal isolation, and bus-level reliability are non-negotiable requirements. DriveKNMS maintains active sourcing channels for both current-production and end-of-life CPCI-200 variants, including the CPCI-200 W/ IP-OCTAL 485 MFIO-200 and CPCI-200 W/ IP-OPTO INTERRUPTER MFIO-200 0021-42777 PCB ASSY.

The Evolution of CPCI-200 Architecture

The CPCI-200 platform was developed by Greenspring Computers (later acquired by Acromag) during the mid-1990s as the embedded computing industry transitioned from VMEbus to the CompactPCI standard defined by PICMG 2.0. The IP mezzanine standard (ANSI/VITA 4) underpins the CPCI-200 design, allowing a single carrier card to host up to four IP modules, each independently addressable over the cPCI backplane. Early revisions of the CPCI-200 supported 8-bit and 16-bit IP module interfaces; later PCB assembly revisions (including the 0021-42777 board revision documented here) introduced enhanced EMI shielding, revised power regulation circuitry, and improved thermal management for extended-temperature industrial deployments. As the cPCI standard matured into CompactPCI Serial (PICMG CPCI-S.0), the CPCI-200 series remained on the parallel cPCI bus, making backward compatibility with legacy IP modules its primary long-term value proposition. Systems integrators maintaining CPCI-200-based racks must account for the parallel-to-serial bus incompatibility when planning platform migrations. Acromag's XVME and BusWorks series represent the functional successors for new designs, but direct hardware replacement of installed CPCI-200 assemblies requires sourcing original or equivalent PCB assemblies.

CPCI-200 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the Greenspring / Acromag CPCI-200 ecosystem, classified by functional category. Each entry reflects a distinct hardware configuration or IP mezzanine pairing.

CompactPCI Carrier Cards

• CPCI-200: 3U CompactPCI carrier, hosts up to 2 IP modules, 32-bit/33 MHz cPCI bus interface.
• CPCI-400: 6U CompactPCI carrier, hosts up to 4 IP modules, extended I/O backplane access.
• CPCI-200-1: Single-slot 3U carrier variant with reduced IP slot count for space-constrained chassis.

Serial Communication Modules (RS-485 / RS-232 / Multi-Protocol)

• CPCI-200 W/ IP-OCTAL 485 MFIO-200: CPCI-200 carrier populated with IP-OCTAL 485 mezzanine; provides 8-channel RS-485 serial I/O with MFIO-200 interface logic, PCB assembly 0021-42777.
• IP-OCTAL 485: Standalone IP mezzanine, 8-port RS-485/422 serial controller, 16C654 UART, up to 460.8 kbaud per channel.
• IP-OCTAL 232: 8-port RS-232 serial IP mezzanine, compatible with CPCI-200 carrier, EIA-232 signal levels.
• IP-SERIAL: Dual-port multi-protocol serial IP module supporting RS-232/422/485 selectable per port.

Digital Input / Opto-Isolated Interrupt Modules

• CPCI-200 W/ IP-OPTO INTERRUPTER MFIO-200 0021-42777: CPCI-200 carrier with IP-OPTO INTERRUPTER mezzanine; opto-isolated digital interrupt inputs, MFIO-200 interface, PCB assembly revision 0021-42777.
• IP-OPTOIO-16: 16-channel opto-isolated digital I/O IP module, 24 VDC field side, compatible with CPCI-200 carrier.
• IP-OPTOIO-48: 48-channel opto-isolated digital I/O IP mezzanine, 3-port configuration, TTL-compatible logic side.
• IP-DIGITAL-48: 48-channel TTL digital I/O IP module, non-isolated, bidirectional port configuration.

Analog Input / Output Modules

• IP-DAC8: 8-channel 12-bit analog output IP mezzanine, ±10 V or 4–20 mA output range, compatible with CPCI-200.
• IP-ADC8: 8-channel 12-bit analog input IP module, single-ended or differential, 100 kSPS aggregate throughput.
• IP-ANALOG-16: 16-channel analog input IP mezzanine, 16-bit resolution, programmable gain amplifier.

Counter / Timer and Motion Modules

• IP-QUADRATURE: Dual-axis quadrature encoder input IP module, 32-bit counters, index pulse capture, for CPCI-200 carrier.
• IP-COUNTER-48: 48-bit event counter / timer IP mezzanine, 40 MHz clock input, compatible with CPCI-200 platform.

Communication Adapter Modules

• IP-CANBUS: Dual-port CAN bus IP mezzanine, ISO 11898-2, up to 1 Mbit/s, for CPCI-200 carrier integration.
• IP-ARCNET: ARCNET coax/twisted-pair IP module, legacy industrial network interface for CPCI-200 hosted systems.

Sourcing Hard-to-Find & Obsolete CPCI-200 Parts

The Greenspring CPCI-200 series entered end-of-life status following Acromag's product line consolidation. New production of CPCI-200 carrier assemblies and associated IP mezzanine modules has ceased. For operators of installed systems in refineries, power generation facilities, and defense platforms, hardware replacement from secondary market sources is the primary lifecycle extension strategy. DriveKNMS maintains a dedicated inventory of CPCI-200 assemblies, including the CPCI-200 W/ IP-OCTAL 485 MFIO-200 and CPCI-200 W/ IP-OPTO INTERRUPTER MFIO-200 0021-42777 PCB ASSY, sourced from decommissioned systems and verified against original Greenspring/Acromag manufacturing specifications. All units are catalogued by PCB assembly revision number to ensure exact hardware compatibility. Customers requiring long-term supply agreements for CPCI-200 spares are advised to contact DriveKNMS directly to discuss consignment stock arrangements and multi-year procurement contracts.

Quality Control for the CPCI-200 Range

CPCI-200 assemblies present specific test challenges due to the dual-layer hardware architecture: the cPCI carrier backplane interface must be validated independently from each IP mezzanine module seated in its IP slot. DriveKNMS applies the following test protocol to all CPCI-200 units processed through its facility. Carrier-level testing verifies cPCI bus enumeration, IP slot address decoding, and power rail integrity (+5 V, +12 V, −12 V) using a dedicated cPCI test chassis. IP mezzanine modules are removed and tested individually: serial IP modules (IP-OCTAL 485, IP-OCTAL 232) are loopback-tested at maximum baud rate on all eight channels; opto-isolated digital modules are tested for input threshold voltage and output leakage current against datasheet limits; analog modules are calibrated against a traceable voltage reference. PCB assembly revision numbers (e.g., 0021-42777) are cross-referenced against Greenspring/Acromag engineering change records to identify any known errata or component substitutions. Units passing all functional tests are issued a DriveKNMS inspection certificate and returned to stock with full traceability documentation.