Abaco Systems / VMIC VMIVME-2534-042 32-Bit Digital I/O Board

The VMIVME-2534-042 delivers 32 bidirectional digital I/O channels organized as four 8-bit ports, providing flexible interface scalability for industrial VMEbus systems requiring high-current switching and differential input sensing capabilities.

Technical Specifications

Form Factor: 6U VMEbus board with VMEbus Rev. C.1 compliance

Digital Channels: 32 I/O channels configured as four 8-bit ports

Data Transfer Modes: A16:D32, D16, D08 (EO) with 8-, 16-, and 32-bit support

Addressing: A16 or A24 standard data and short I/O addressing

Output Current: 600 mA sink capability per channel with 1 A thermal protection

Output Voltage: 60 V minimum breakdown voltage with clamp diode protection

Input Impedance: 33 kΩ for both single-ended and differential configurations

Differential Input Range: -30 to +60 V common-mode voltage tolerance

Input Sensitivity: ±100 mV differential threshold detection

Port Configuration: Jumper or software-selectable input/output direction per port

Address Decoding: Separate CSR and Board ID Register decoders

Key Features High-current output drivers eliminate external limiting resistors when driving incandescent lamps and inductive loads up to 600 mA. Built-in clamp diodes protect against inductive kickback without additional suppression components. Differential input receivers with 33 kΩ impedance accept industrial sensor signals across 90 V common-mode range. Port-level direction control enables mixed input/output configurations within the same board. Extensive Built-in-Test electronics provide comprehensive fault detection and board verification capabilities. Positive or negative true logic configuration through data latch programming matches diverse interface requirements.

Typical Applications Manufacturing automation systems requiring MIL-STD-1553 digital interface compatibility. Process control networks interfacing with IEC 61131-compliant PLCs and distributed I/O modules. Data acquisition systems for IEEE 802.3 industrial Ethernet protocol conversion. Military and aerospace test equipment meeting DO-160 environmental specifications. Industrial machine control applications requiring IEC 61000-4 EMC compliance for factory floor deployment.

Compatibility & Integration Installs in any VMEbus Rev. C.1 compliant chassis with standard 6U card spacing. Address modifier codes support both supervisory and non-privileged I/O access modes through jumper selection. Direct interface compatibility with 5V TTL and CMOS logic families without level translation. Connects to industrial terminal blocks and D-sub connectors for field wiring integration. Software libraries support VxWorks, Linux, and Windows VMEbus driver architectures.