Acromag AVME9480 Digital I/O Module

The Acromag AVME9480 is a VMEbus-compatible digital I/O module providing 64 general-purpose I/O points for industrial automation, data acquisition, and process control. Each I/O line is individually programmable as input or output on a bit-by-bit basis, configurable as eight 8-bit ports or four 16-bit ports. Up to eight I/O lines can generate VMEbus interrupts with change-of-state monitoring and vectored interrupt support for signal variations or 8-bit pattern matches.

The module accepts input signals from 0 to 30V with adjustable threshold and wide hysteresis, and drives outputs up to 30V capable of handling inductive loads with full output readback. Selected I/O lines function as optional counter/timers for pulse, square wave, or event-counting applications. The module connects via a 96-pin DIN 41612 connector (P1) and supports A24/A16:D16/D08(EO) DTB slave data transfer with address modifiers 29H, 2DH, 39H, and 3DH.

An on-board ID PROM enables automatic module identification within the VMEbus environment.

Technical Specifications

• I/O Architecture: 64 general-purpose digital I/O points, individually programmable as inputs or outputs; configurable as eight 8-bit ports or four 16-bit ports


• Input Specifications: 0 to 30V range, adjustable input threshold, wide input hysteresis


• Output Specifications: 0 to 30V drive capability, inductive load compatible, output state readback supported


• Interrupt Capability: Eight I/O lines configurable for VMEbus interrupt generation; supports change-of-state monitoring and 8-bit pattern match vectored interrupts


• Counter/Timer Function: Selected I/O lines optionally usable for pulse generation, square wave output, or event counting


• VMEbus Interface: 96-pin DIN 41612 connector (P1); A24/A16:D16/D08(EO) DTB slave support; address modifiers 29H, 2DH, 39H, 3DH


• Power Consumption: +5V DC ±5% @ 3.0 A maximum


• Operating Temperature: 0 to 70°C (32 to 158°F)


• Storage Temperature: -25 to 85°C (-13 to 185°F)


• Humidity: 5 to 95%, non-condensing

Key Features

• Built-in ID PROM for automatic module identification


• Front panel status indicators


• Individual bit-level programmability for complete I/O flexibility


• VMEbus interrupt-driven event handling


• Optional counter/timer functionality

Typical Applications

• Industrial process control and automation


• Real-time data acquisition systems


• Event-driven monitoring and alarm signaling


• Legacy VMEbus system integration and modernization

Compatibility & Integration

• Fully compatible with VMEbus Specification (electrical and mechanical)


• Works with industry-standard solid-state relays and termination panels (PB16, PB32)


• I/O adapter cards available for extended configurations