Description
1. Overview
The TEWS TVME200-10 is a standard 6U VMEbus 4-slot Industry Pack (IP) carrier board developed by TEWS Technologies. As the core expansion substrate of industrial VME control systems, it is designed for legacy VME industrial computers, embedded measurement and control systems, industrial automatic test platforms, and aerospace measurement equipment. Serving as an expansion carrier for IP daughter cards, it supports functional expansions such as analog acquisition, digital I/O, serial communication and bus conversion, solving the pain points of insufficient scalability, low hardware integration and limited function expansion of traditional VME systems.
Complying strictly with ANSI/VITA 1-1994 VMEbus specifications, the module features a standard VME slave interface, flexible address space configuration, independent slot clock selection, interrupt routing management and hardware overload protection. Equipped with 4 independent standard IP expansion slots, it supports mixed insertion of multi-spec IP modules to adapt to diverse measurement and control scenarios. With industrial wide-temperature design, built-in RF filtering and self-healing fuse protection, it delivers excellent anti-interference performance and operational stability, widely applied in rail transit, industrial measurement and control, military equipment, semiconductor equipment and legacy VME system upgrading projects.
2. Technical Features
2.1 Standard 6U VME Architecture with Native Bus Compatibility
Adopting standard 6U VME board specifications, it is fully compliant with VMEbus ANSI/VITA 1-1994 protocols and supports VME A16/A24/A32 address space and D08/16 data transmission. It can be directly adapted to all standard VME chassis, backplanes and main control CPU modules without bus adaptation modification, enabling rapid access and capacity expansion for existing VME industrial control systems.
2.2 4-Slot IP Modular Expansion with Flexible Configuration
Equipped with 4 independent standard Industry Pack expansion slots, supporting flexible mixed installation of 4 single-size IP modules or 2 double-size IP modules. It can be freely matched with various IP functional daughter cards for analog input/output, digital I/O, RS232/485 serial port and CAN bus, realizing customized system measurement and control functions. It significantly improves the hardware integration of VME systems, simplifies system topology and reduces wiring complexity.
2.3 Independent Clock & Address Configuration for Precise Bus Scheduling
Each IP slot supports independent clock frequency selection of 8MHz or 32MHz to meet the operating requirements of different rate IP modules. Built-in independent storage address space supports 16-bit linear addressing for single IP modules. The A24/A32 addressing range can be switched via onboard DIP switches, ensuring accurate conflict-free bus addressing and stable transmission timing.
2.4 Intelligent Interrupt Routing for Efficient System Response
Integrated programmable interrupt routing management realizes independent collection, priority allocation and directional forwarding of multi-IP module interrupt signals. It accurately uploads abnormal signals, sampling trigger signals and status change signals of each slot IP daughter card to the VME main control CPU, ensuring real-time system response to various measurement and control events and avoiding signal congestion and response delay caused by concurrent multi-device interrupts.
2.5 Multi-Level Hardware Protection for Operational Safety
Each IP slot power supply circuit is equipped with self-healing fuse protection for automatic overload and short-circuit power-off protection, with automatic power recovery after fault elimination. The built-in RF filter circuit suppresses industrial high-frequency interference, power ripple and electromagnetic radiation, effectively avoiding IP module crash, data disorder and bus communication abnormality caused by external interference.
2.6 Industrial Wide-Temperature Design for Harsh Condition Operation
Adopting military-grade components and precision PCB technology, it supports an ultra-wide operating temperature range of -40℃～+85℃, resisting temperature fluctuation, slight vibration and humid environments. The full-link electrical isolation design prevents crosstalk interference and supports 7×24-hour uninterrupted stable operation with superior durability and reliability.
2.7 Low-Cost Upgrading for Legacy System Expansion
It enables system I/O and function expansion without modifying the original VME chassis, backplane, main control program and wiring architecture. Compatible with all standard universal IP modules, it quickly realizes functional iteration, measuring point expansion and communication upgrading of legacy VME measurement and control systems, reducing equipment renovation costs and extending service life.
3. Detailed Specifications
3.1 Basic Hardware Parameters
- Model: TVME200-10
- Manufacturer: TEWS Technologies (Germany)
- Type: 6U VMEbus Industry Pack (IP) Carrier Board
- Board Size: Standard 6U VME Industrial Board Dimension
- Expansion Slots: 4 Independent Standard IP Slots (4 Single / 2 Dual Mixed Installation)
- Mounting Method: Embedded Installation in Standard VME Chassis Backplane Slot
- Core Functions: IP Module Carrier Expansion, VME Bus Protocol Adaptation, Multi-Module Interrupt Routing, Address Space Mapping, Hardware Overload Protection, Industrial Signal Filtering
- Compatible Systems: Full-Series Standard 6U VMEbus Industrial Control Systems, Embedded Measurement & Control Platforms, Industrial Test Equipment
- Compatible Modules: Full-Series Standard Industry Pack (IP) Functional Daughter Cards
3.2 Bus & Communication Parameters
- Bus Standard: VMEbus ANSI/VITA 1-1994 Specification, VME Slave Interface
- I/O Address Space: VME A16, D08/16, Address Modifier 29/2D, 1KB Per IP (256 Bytes/IP)
- Memory Address Space: Switchable VME A24/A32, D08/16, Address Modifier 39/3A
- Slot Clock: Independently Selectable 8MHz / 32MHz Per Slot
- Addressing Mode: 16-Bit Linear Addressing with Independent Storage Mapping Per IP
- Interrupt Function: Programmable Interrupt Routing, Multi-Interrupt Priority Configuration, Directional Interrupt Forwarding
- External Interface: 50-Pin Flat Cable Connector, Integrates All IP I/O Lines and 14 User-Defined IP C4 Lines
3.3 Electrical Parameters
- Power Supply: Standard VME Backplane +5V / +12V DC Power Supply
- Power Protection: Independent Self-Healing Fuse Overload & Short-Circuit Protection Per IP Slot
- Anti-Interference Design: Built-In RF Filter Circuit & Power Ripple Suppression Circuit
- Electrical Isolation: Isolation Between Bus Port and IP Expansion Ports to Prevent Signal Crosstalk
- Operating Characteristics: Low-Power Stable Operation, No Overheating or Bus Stuttering Under Full Load
3.4 Environmental & Mechanical Parameters
- Operating Temperature: -40℃～+85℃, Ultra-Wide Temperature Continuous Operation
- Storage & Transit Temperature: -45℃～+90℃, Qualified for Long-Distance Transportation & Storage
- Operating Humidity: 5%～95% RH (Non-Condensing), Moisture & Corrosion Resistant
- Mechanical Performance: Reinforced 6U Board Structure, Vibration-Proof & Anti-Loose
- Protection Grade: IP30, Dust & Foreign Object Intrusion Resistant
- EMC Performance: Industrial EMC Certified, Anti-RF, Anti-Harmonic, Anti-Static & Anti-Surge
3.5 Configuration & Maintenance Parameters
- Configuration Mode: Onboard DIP Switch for Address Space, Clock Frequency and Interrupt Mode Setting
- Status Monitoring: Bus Link Status, Slot Power Status, IP Module Presence Detection
- Fault Tolerance: Single-Slot Module Fault Isolated Independently, No Impact on Other Slots and Bus Operation
- Maintenance Features: IP Module Plug-And-Play Replacement Under Power-Off Condition, Long-Term Maintenance-Free Stable Operation
4. Operating Principle
After power-on, the TEWS TVME200-10 carrier board automatically completes VME bus initialization, port self-test, clock configuration and address space loading, and enters IP carrier working mode after verification. As the core transfer carrier between the VME main control CPU and IP functional daughter cards, it builds a data interaction channel between the VME bus and each IP expansion module, realizing bus protocol parsing, address mapping, clock allocation and interrupt scheduling.
During operation, the carrier board independently allocates 8MHz/32MHz working clock and exclusive addressing space for each IP slot according to preset DIP switch configurations. It real-timely collects measurement and control data, status signals and fault information of each IP module, filters, verifies and sorts the data, and uploads it to the VME main control system. Meanwhile, it accurately forwards control commands, parameter configurations and scheduling instructions issued by the main control CPU to drive each IP module to complete data acquisition, signal output and bus communication functions.
Equipped with self-healing protection mechanism and RF filter circuit, the board real-timely monitors the power condition and signal quality of each slot. Once single-module overload, short circuit or signal abnormality occurs, it immediately triggers independent circuit protection to isolate faulty slots and ensure normal operation of remaining modules and the overall VME bus system. The programmable interrupt router intelligently allocates multi-module interrupt priorities to guarantee real-time and stable system measurement and control response, realizing coordinated, high-precision and reliable parallel operation of multiple IP modules.
