VMIC VMIVME-2330 Digital I/O TurboModule Board

Module Feature

VMIVME-2330 is a single-slot 6U VMEbus TTL digital I/O TurboModule developed by VMIC (GE Fanuc / Abaco Systems). It provides total 64 TTL discrete I/O channels,divided into eight independent 8-bit ports;each port can be configured as input or output via onboard hardware jumpers. Logic polarity (high-true / low-true) is also configurable by jumper setting. Each channel supports 24 mA sink and 6.5 mA source drive capability,suited for driving TTL level field sensors and actuators. VME bus interface adopts A16 short I/O addressing,supports D08/D16/D32 data transfer,works purely as VME slave module. Dual 64-pin DIN 41612 front connectors provide field signal interface with alternate ground pin layout to reduce signal crosstalk. Built-in BIT diagnostic circuit can read back actual I/O state and compare with programmed output value to detect stuck-high / stuck-low channel faults. Rugged Eurocard PCB with conformal coating,shock and vibration screened for power plant cabinet environment,widely used in gas/steam turbine discrete interlock control,aerospace ground test bench and hardware-in-loop real-time simulation VME chassis.

Working principle

VME host writes port direction configuration and target logic level to onboard I/O registers. For output mode,the TTL driver outputs logic signal to external field devices;for input mode,the receiver samples external TTL level and feeds digital data back onto VME bus. BIT function performs output readback comparison to verify channel integrity. VME FPGA completes address decoding and bidirectional data handshake between VME backplane and I/O register bank. Onboard ESD protection clamps transient surge noise coming from field cables.

Onboard components

VME interface FPGA,eight ×8-bit I/O register bank,TTL driver/receiver array,port direction & polarity jumper bank,BIT fault detection logic,VME J1/J2 edge connector,front-panel dual 64 pin DIN I/O connectors.

LED indicators

No dedicated fault LED;BIT fault status is read via VME status register.

Hardware self-diagnosis

Visual inspection of PCB,components and solder joints;board ID register readback verification;per-port I/O channel readback test;VME A16 read/write communication validation.

Programming software

VMIC digital I/O driver library and configuration utility,supports VxWorks,Linux and QNX real-time operating systems;software tool for port mode setup and BIT fault log reading.

Electrical & Process Parameters

Model: VMIVME-2330 Brand: VMIC Device type: 6U VMEbus 64 bit TTL digital I/O TurboModule Bus standard: VMEbus, A16 short addressing, D08/D16/D32 data transfer Channel:64 TTL I/O,8 ×8-bit ports,jumper select input / output Drive capacity:24 mA sink /6.5 mA source per channel Logic level:TTL 0~5 V DC,high/low true jumper configurable Control mode: VME slave access,hardware jumper port configuration,BIT channel readback test,ESD protection Power supply: +5 V from VME backplane,2 A max under full load Cooling: Convection cooling Protection: Per-channel ESD clamping Mounting: Standard single-height 6U VME front panel ejector locking Protection class: PCB with optional conformal coating

Mechanical & Structure

Mounting: Single-slot 6U VME Eurocard Protection class: PCB with optional conformal coating

Environmental

Operating temperature:0℃ ~ +70℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:20~80% non-condensing Certification: CE compliant Status: VMIC 6U VME 64 channel TTL digital I/O TurboModule

Installation

Follow ESD safety procedure before handling.Fully power off VME chassis.Insert VMIVME-2330 into vacant 6U VME slot and lock front panel ejector latches.Set onboard jumpers for each port I/O direction and logic polarity.Connect field TTL wiring to dual 64 pin DIN front connectors.Power on chassis,load VMIC digital I/O driver,run BIT diagnostic before commissioning.

Interface

VME J1/J2 backplane connector,front-panel dual 64-pin DIN TTL I/O connector,fault status register pins.

Diagnostic

Board undetected: poor VME backplane contact,damaged edge connector or incorrect A16 address setting. BIT channel fault: I/O pin stuck high/low or TTL driver hardware burnout. Input reading abnormal: external signal level mismatch or input receiver damage. No output drive: port jumper misconfiguration or output driver failure.

Product Brief

VMIC VMIVME-2330 single height 6U VME TTL digital I/O TurboModule,64 discrete TTL I/O divided into eight jumper-configurable 8-bit ports with BIT channel readback test,provides high-density discrete signal interface for turbine interlock control and aerospace hardware-in-loop simulation VME systems.