Xycom XVME-491 VMEbus 71491A PN70491-001



Xycom XVME-491 VMEbus 71491A PN70491-001

product overview

Xycom XVME-491 VMEbus 71491A PN70491-001 is a high-performance VMEbus module designed specifically for industrial automation and other fields. Xycom has launched this product with a deep accumulation in the fields of automation and industrial control, and an unwavering pursuit of quality and reliability. Its design aims to provide stable and efficient serial communication and related functional support for various complex systems, which can be widely applied in industrial production, transportation, energy management and other scenarios, meeting the strict requirements of different industries for data communication and control.

Specification parameters

Working voltage: It is usually adapted to common industrial standard voltages, such as+5V DC, ± 12V DC, etc., to ensure stable operation in various industrial power environments and adapt to the power supply specifications of different equipment.

Interface type: It has multiple standard VMEbus interfaces for high-speed data exchange with other modules in the VME system. At the same time, it has four independent serial communication interfaces that support common serial communication protocols such as RS-232, RS-422, and RS-485, and can flexibly connect various serial devices such as sensors, terminal devices, controllers, etc.

Size specifications: The overall size design is compact, possibly measuring 233.35mm (9.2 inches) in length and 160mm (6.3 inches) in width, making it easy to install in industrial control cabinets or equipment with limited space, effectively saving system space and improving equipment integration.

Layer number of circuit board: Adopting a multi-layer circuit board design, such as 6 or 8 layers, the stability and anti-interference ability of signal transmission are greatly improved through reasonable circuit layout, ensuring accurate and error free transmission of data and instructions even in complex electromagnetic environments.

Circuit board material: The substrate is made of high-quality FR-4 material, which has good electrical insulation performance, high mechanical strength, and excellent stability, and can withstand large temperature and humidity changes. The electronic components on the board are all high-quality products from well-known brands, ensuring the overall performance and reliability of the module from the source.

Core functions

Multi protocol serial communication: Supports multiple serial communication protocols such as RS-232, RS-422, and RS-485, and can be flexibly configured according to different device requirements. In industrial automation production lines, temperature, pressure, and other data collected by sensors can be accurately transmitted to the control system through appropriate serial protocols, providing data support for precise control of the production process.

High speed data transmission: With the help of the VMEbus interface, high-speed data transmission can be achieved between other VME modules, with transmission rates reaching tens of MB/s or even higher. In a data collection system, it is possible to quickly transmit a large amount of collected data to storage or processing modules, meeting the high demand for real-time data in application scenarios.

Flexible communication configuration: Each serial interface can independently configure parameters, including baud rate, data bits, stop bits, parity bits, etc., to adapt to devices with different communication requirements. In intelligent transportation systems, seamless communication can be achieved with vehicle detection sensors, signal controllers, and other devices from different manufacturers to achieve intelligent control of traffic flow.

Data caching and processing: Built in high-speed data cache area with a certain capacity, which can temporarily store and preprocess data during data transmission. When multiple devices are sending data simultaneously, the cache area can effectively prevent data loss, ensuring data integrity and continuity. At the same time, it can perform preliminary processing on some simple data, reducing the burden on the system's main processor.

Working principle

Power supply and initialization: After the module is powered on, the internal power management circuit converts the input industrial voltage into the stable voltage required by each component, providing energy support for the entire module. At the same time, start the initialization program and configure the internal registers, communication interfaces, etc. to enter normal working state.

Serial data reception and transmission: When an external serial device sends data, the data enters the module through the corresponding serial interface. The interface circuit first performs level conversion and signal conditioning on the data to comply with the internal logic level standards of the module. Next, the data is transferred to the data cache for temporary storage. When sending data, the module reads the data to be sent from the data buffer area, encodes and level converts it, and sends it to the external device through the serial interface.

VMEbus data exchange: When a module interacts with other modules in the VME system, it packages the data that needs to be transmitted into specific format packets according to the VMEbus protocol and sends them out through the VMEbus interface. At the same time, it can receive data packets sent by other modules, unpack and process them, and achieve collaborative work with the entire VME system.

Control and Configuration: Users can configure and control modules through software, set communication parameters and data transmission modes for serial interfaces. After receiving control instructions, the module adjusts the corresponding functional modules through its internal control logic circuit to meet different application requirements.

Precautions

Installation environment: It should be installed in a dry, well ventilated, and suitable temperature environment (generally recommended working temperature range is -20 ℃ to+70 ℃), avoiding installation in damp, high temperature, high dust, or corrosive gas areas to avoid affecting the performance and service life of the module.

Electrostatic protection: During the installation, disassembly, and maintenance of modules, operators must wear anti-static wristbands and other protective equipment to prevent damage to sensitive electronic components on the module caused by human static electricity.

Power connection: Ensure that the power connection is correct and error free, carefully check the polarity and magnitude of the input voltage, and ensure that it matches the rated voltage requirements of the module. Incorrect power connections may cause module burnout or malfunction.

Communication cable connection: When connecting serial communication cables, attention should be paid to the length and quality of the cables. Long cables may cause signal attenuation and affect communication quality. At the same time, it is necessary to ensure that the cable connection is firm and avoid looseness or poor contact.

Software configuration: When configuring modules, it is necessary to strictly follow the requirements of the product manual to avoid communication abnormalities or module malfunction caused by incorrect parameter settings. After changing the configuration parameters, timely testing should be conducted to ensure that the system runs normally.

Similar model supplement

Xycom XVME-400: also Xycom's VMEbus serial I/O module, with similar functionality to XVME-491, both have serial communication capabilities. However, the number of serial interfaces of XVME-400 may be relatively small, such as only 2 serial interfaces, and the data transmission rate may be lower compared to XVME-491, making it suitable for simple application scenarios with low requirements for the number of serial interfaces and low data transmission rate.

Xycom XVME-401: This model overlaps with XVME-491 in terms of functionality and supports multiple serial communication protocols. However, XVME-401 may have different electrical characteristics and compatibility in terms of interfaces, such as better compatibility with certain specific brands of serial devices, while XVME-491 performs better in terms of universality. In addition, the size of XVME-401 may be slightly larger, making XVME-491 more advantageous in installation environments with limited space.

Application scenarios

Industrial automation production line: used to connect various sensors (such as temperature sensors, flow sensors), actuators (such as motor drivers, solenoid valves), and controllers to achieve automated control and monitoring of the production process. Through high-speed and stable serial communication, various data on the production line are transmitted in real-time to the control system for precise control of the production process, improving production efficiency and product quality.

Intelligent transportation system: plays an important role in traffic signal control, vehicle detection and monitoring. It can communicate with signal controllers, vehicle detectors and other devices at intersections to achieve intelligent optimization of traffic signals, real-time monitoring and statistics of traffic flow, and provide strong support for the efficient operation of urban transportation.

Energy management system: used to connect various energy monitoring devices (such as electricity meters, water meters, gas meters) and energy control devices (such as smart switches, frequency converters), to achieve the collection, transmission, and analysis of energy data, as well as remote control of energy equipment. By real-time monitoring and precise control of energy consumption, the goal of energy conservation, emission reduction, and optimization of energy management can be achieved.

Industrial Data Acquisition and Monitoring System (SCADA): As a key module for data acquisition and communication, it is responsible for collecting and transmitting data from field devices distributed in different areas to the monitoring center. In SCADA systems for industries such as petrochemicals, power, metallurgy, etc., XVME-491 can ensure accurate and timely transmission of large amounts of data, providing reliable basis for production scheduling and decision-making.