I. Basic Information
Full Model：VMIVME-7750-746001 / 350-027750-746001 P
Brand & Origin：GE Fanuc / VMIC, USA Original
Product Positioning
As a standard 6U VME bus industrial reinforced single-board computer (SBC) of GE VMIVME series, it is the mainstream high-performance main control unit in the VME industrial control architecture. Specially developed for high-reliability, high real-time and long-cycle operation scenarios such as military testing, aerospace, energy turbines, rail transit and high-end industrial measurement and control, this customized version of the 7750 series is deeply optimized in hardware configuration, bus parameters and firmware programs for precision data acquisition and multi-task parallel control. It undertakes core functions such as core logic operation, real-time task scheduling, VME bus resource management, multi-module data interaction, closed-loop working condition control and mass data storage analysis of the entire embedded system. As the computing core of VME chassis control systems, it is widely adapted to various standard 6U VME architecture automation equipment, test and measurement platforms and power unit control systems, serving as a key original spare part for fault replacement, equipment computing power upgrading and system hardware iteration of old boards of the same model.
Hardware Architecture
It adopts a military-grade reinforced embedded hardware architecture, equipped with Intel Pentium III industrial-grade low-power processor and Intel 815E dedicated industrial control chipset, integrated with independent high-speed L1/L2 cache, SODIMM expandable memory, CompactFlash solid-state storage interface, standard VME64x bus controller and intelligent hardware fault tolerance system. Adopting 6U standard industrial board specification, multi-layer gold-plated reinforced PCB technology, separated strong and weak current layered wiring and full-domain electromagnetic shielding design, it effectively resists industrial high-frequency interference, voltage crosstalk and electrostatic impact. The built-in hardware-level temperature monitoring, power stabilization correction, bus data error correction and operation fault self-recovery mechanism features stable computing power, strong real-time performance, high bus throughput, vibration and impact resistance, wide temperature adaptation and no downtime or timing drift after long-term operation, perfectly meeting the 24/7 uninterrupted high-load operation requirements under harsh working conditions.
Mounting Specification
It is adapted to universal 6U VME standard chassis and backplane slots with embedded plug-in installation, standardized bus electrical definition and power pins, and buckle-type anti-vibration locking structure to avoid board loosening and poor contact under equipment vibration and start-stop conditions. The front panel is integrated with multiple groups of status indicators for power operation, bus activation, hardware fault and program operation, enabling intuitive on-site inspection, link status judgment and accurate fault location. Featuring high integration and compact structure, it adapts to the dust-proof, moisture-proof, wide-temperature and high-vibration round-the-clock operating environment of closed industrial control chassis. It supports non-stop hot-swap maintenance without overall equipment power-off and restart, fully complying with the original installation and operation specifications of GE VMIVME series boards.
Compatible Systems
It is fully compatible with standard VME64 and VME64x bus protocols and full series of 6U VME chassis backplanes, and can be seamlessly networked with various VME bus I/O acquisition boards, communication boards and expanded functional boards. Natively adapted to various industrial embedded real-time operating systems, it supports stable operation of industrial control programs, high-speed data acquisition programs and equipment measurement and control algorithms, and is perfectly compatible with GE supporting configuration and equipment operation and maintenance software. It can be quickly connected with upper monitoring systems, on-site sensor acquisition equipment, execution control mechanisms and precision testing instruments, adapting to the construction and upgrading of distributed VME measurement and control systems, unit main control systems, aerospace test platforms and other high-end embedded control scenarios.
Product Characteristics
It is an original industrial reinforced VME single-board computer. Before delivery, it has passed full-load computing aging, bus limit pressure test, high and low temperature cycle impact, full EMC electromagnetic compatibility certification and vibration and impact detection with stable and reliable hardware performance. Equipped with mature Pentium III computing core, it has strong multi-task parallel processing capability and ultra-low task response delay. It supports flexible expansion of memory and solid-state storage with excellent program bearing and data caching capabilities. The VME64x high-speed bus transmission is efficient and stable with strong anti-interference and no data packet loss. The reinforced structure adapts to harsh industrial and military working conditions. It supports long-term uninterrupted continuous operation, and can be used for non-destructive in-situ replacement of old boards with faults, computing power attenuation and bus abnormalities without program modification or wiring change, greatly reducing equipment technical renovation and operation and maintenance costs.
II. Technical Specifications
1. Core Operation Parameters
The core processor adopts Intel Pentium III industrial-grade low-power CPU matched with Intel 815E industrial control dedicated chipset, featuring mature and stable architecture, balanced computing power and strong anti-interference performance, optimized for industrial real-time control scenarios. Built-in independent L1/L2 high-speed cache ensures high instruction execution efficiency and accurate task scheduling, which can stably undertake high-load tasks such as complex logical operation, multi-loop closed-loop regulation, high-frequency data acquisition and analysis, and multi-module collaborative scheduling. There is no stuttering, computing overflow or task delay during multi-program parallel operation, fully meeting the high real-time computing requirements of high-end industrial measurement and control, power equipment main control and precision test systems.
2. Memory & Storage Parameters
Memory Configuration: Equipped with standard SODIMM industrial memory slot, supporting up to 512MB high-speed SDRAM memory. It features fast reading and writing speed and strong stability with no reading and writing errors, data disorder or memory overflow under large-batch data processing and multi-task parallel working conditions. Storage Configuration: The board is equipped with native CompactFlash solid-state storage interface, supporting solid-state system disk deployment and compatible with expanded SATA storage devices. It meets the expansion requirements of large embedded program resident, mass working condition data caching, system log retention, process formula storage and test data archiving. It retains complete data after power failure and restores operating state quickly after power-on.
3. Bus Transmission Parameters
Bus Standard: Compatible with VME64x industrial high-speed bus protocol with a maximum burst transmission rate of 160MB/s, featuring large bus throughput and ultra-low transmission delay, supporting parallel high-speed data interaction, high-frequency instruction transceiving and real-time transmission of large batches of data for multiple VME functional boards. The built-in hardware-level bus data verification, error retransmission and congestion scheduling mechanism can automatically correct transmission deviations caused by industrial interference, eliminate abnormal data frames and avoid bus congestion and stuck faults, ensuring accurate, continuous and efficient collaborative communication of multiple devices in the entire VME system without packet loss, dislocation or communication interruption.
4. Electrical Parameters
It adopts standard multi-channel DC power supply of VME chassis, adapting to +5V, +12V, -12V standard backplane power supply. The whole machine features balanced power consumption and low heat generation with no power attenuation or voltage fluctuation under full-load operation and high-speed bus transmission conditions. The power supply loop is integrated with multi-stage EMC filtering, over-current protection, over-voltage self-locking, electrostatic discharge and surge suppression circuits, which can effectively resist instantaneous industrial grid fluctuation, voltage impact and high-frequency electromagnetic clutter interference, avoiding board restart, operation disorder, bus disconnection and program crash caused by abnormal power supply, ensuring long-term full-load stable operation of the board.
5. Environmental Operating Parameters
Operating Temperature：-40℃～+85℃
Storage Temperature：-45℃～+90℃
Operating Humidity：5%~95% RH, non-condensing
The whole machine has passed authoritative industrial EMC electromagnetic compatibility, vibration resistance, impact resistance and high and low temperature tolerance certifications. Adopting military-grade three-proof protective coating and reinforced structure, it has excellent dust-proof, moisture-proof, anti-corrosion, aging-resistant, vibration-resistant and strong electromagnetic interference-resistant performance. It can withstand harsh working conditions such as extreme temperature difference, high-frequency vibration, dust accumulation and strong electromagnetic radiation in power stations, military industry, rail transit and outdoor equipment, adapting to the operation requirements of high-end industrial and military embedded control equipment in all scenarios.
III. Key Features
1. Mature High-Performance Computing with High Real-Time Control Accuracy
Equipped with industrial-grade Pentium III stable computing core and 815E professional chipset, it features sufficient computing power, mature architecture and extremely low failure rate, efficiently undertaking high-load tasks such as large embedded control programs, multi-channel data acquisition operation, complex closed-loop regulation algorithms and multi-device collaborative management. The hardware-level real-time task scheduling mechanism ensures fast instruction response speed and minimal operation deviation, guaranteeing full-process system control real-time performance and accuracy, thoroughly avoiding multi-task stuttering, response lag and operation drift of traditional industrial control boards, meeting the strict operating standards of precision measurement and control and power unit main control.
2. VME64x High-Speed Bus for Efficient Multi-Module Collaborative Transmission
Natively adapted to VME64x high-speed bus protocol with 160MB/s super-large burst transmission bandwidth, it supports parallel high-frequency data interaction of multiple I/O boards, communication boards and acquisition boards, perfectly adapting to distributed measurement and control, multi-point synchronous acquisition and multi-device linkage control scenarios. The built-in hardware bus error correction and retransmission mechanism can automatically filter industrial electromagnetic interference, repair transmission errors and avoid bus congestion, ensuring continuous, accurate and stable data transmission of the entire VME system, and greatly improving the overall operation efficiency and collaborative control reliability of the system.
3. Flexible Storage Expansion for Long-Term Iteration & Upgrading
It supports SODIMM memory expansion and dual-mode storage expansion of CF solid state and SATA, enabling flexible allocation of hardware resources according to on-site program scale and data storage requirements, adapting to industrial control and measurement and control systems of different complexity levels. The combination of large-capacity high-speed memory and solid-state storage can stably support long-term high-frequency data reading and writing, working condition log storage, test data archiving and permanent program operation without storage overflow, reading and writing faults or data loss, fully meeting the needs of long-term equipment function iteration, system upgrading and data expansion.
4. Military-Grade Reinforced Design for High-Reliability Operation Under Harsh Conditions
Adopting 6U standard reinforced board structure with enhanced vibration, impact and temperature difference resistance design, paired with full-domain three-proof coating, electromagnetic shielding layer and multi-level electrical protection system, it fully adapts to harsh working conditions such as high temperature, low temperature, high vibration, high dust and strong electromagnetic interference. The built-in hardware temperature monitoring, power stabilization, program self-recovery and bus fault tolerance functions can real-timely detect hardware abnormalities and automatically correct minor operation deviations, greatly reducing the probability of fault downtime, perfectly suitable for high-reliability scenarios such as military industry, aerospace, energy power and rail transit with zero downtime requirements.
5. Full-Compatible In-Situ Replacement with Low Operation & Renovation Cost
The board dimensions, installation structure, bus protocol, electrical pins and firmware configuration are fully compatible with standard 6U VME systems and VMIVME-7750 series same-architecture equipment. Old boards of the same model with insufficient computing power, unstable bus, frequent faults and aging attenuation can be directly replaced in situ. No chassis structure modification, control program reconstruction or bus parameter debugging is required. Full-load operation can be realized after normal power-on self-test, greatly shortening the downtime for equipment fault maintenance and technical renovation, and effectively reducing the operation and maintenance costs and downtime losses of high-end industrial control equipment.
IV. Working Principle
VMIVME-7750-746001 is a 6U reinforced single-board computer dedicated to GE VME industrial control systems. As the core operation and control hub of the entire embedded equipment, after being inserted into the slot of a standard 6U VME chassis backplane and completing bus docking and power access, it automatically finishes hardware self-test, processor initialization, memory and storage medium verification, VME bus handshake matching, peripheral resource scanning and system initialization upon power-on, and enters normal main control operating state after startup.
During normal system operation, relying on the high-speed computing capability of Pentium III processor and 815E chipset, the board cyclically executes embedded control programs, measurement and control algorithms and bus scheduling tasks. It real-timely interacts data with all I/O acquisition boards, communication expansion boards and functional control boards in the chassis through the VME64x high-speed bus, accurately collects on-site working condition parameters, equipment status signals and test data, outputs closed-loop control instructions after high-speed operation, logical judgment and algorithm processing, realizing equipment start-stop control, process parameter adjustment, working condition monitoring and early warning, data storage and archiving and multi-device linkage control. Meanwhile, it independently completes bus bandwidth allocation, task priority scheduling and data verification and error correction to ensure orderly parallel operation of multiple modules and tasks without conflict, stuttering or data deviation.
In the whole operation process, the board hardware monitoring system real-timely monitors power supply voltage, operating temperature, bus link status, memory reading and writing status and program operation conditions, automatically completing temperature regulation, power stabilization, bus fluctuation self-recovery and data deviation correction. It can automatically correct and recover from minor industrial electromagnetic interference, instantaneous voltage fluctuation and small bus jitter without affecting normal system operation. When detecting hardware faults, bus abnormalities or program errors, it immediately latches fault codes and lights alarm indicators to quickly locate fault points for on-site maintenance and troubleshooting. It continuously provides stable, efficient and high-fault-tolerance core operation and bus scheduling support for VME architecture industrial control, measurement and control and test systems, ensuring uninterrupted stable operation of equipment 24/7.
V. Application Scenarios
1. VME Architecture Industrial Main Control Systems: As the core main control unit of 6U VME chassis, it undertakes core tasks of operation calculation, bus scheduling, equipment linkage and logical control in industrial automation complete equipment and process control systems.
2. Aerospace & Military Test Systems: Applied in aerospace airborne testing, military embedded control, precision equipment detection and laboratory high-precision data acquisition and analysis systems, meeting the strict equipment operation requirements of high real-time performance, high stability and high reliability.
3. Energy & Rail Transit Equipment Control: Used in generator set turbine measurement and control, rail transit vehicle-mounted main control and new energy equipment automatic control systems, adapting to the continuous operation requirements of outdoor, mobile and high-interference working conditions with wide-temperature, vibration-resistant and strong anti-interference characteristics.
4. Technical Renovation & Upgrading of Old VME Equipment: Specially used to replace aging faulty boards, computing power attenuation boards and unstable bus boards of the 7750 series, quickly repairing system stuttering, communication abnormalities, frequent downtime and other problems, and improving the overall operation performance, transmission efficiency and operational stability of the equipment.
