MOTOROLA MVME167-32B VME bus single-board computer

MOTOROLA  MVME167-32B VME bus single-board computer

Hardware features:

Processor: It adopts a 33MHz MC68040 microprocessor with a floating-point coprocessor, featuring outstanding processing speed and floating-point operation performance.

Memory: On-board 8MB ECC (Error Checking and Correction) DRAM, which can effectively ensure the accuracy of data storage and processing. It is also equipped with 128KB SRAM, and battery backup is optional for saving critical data.

Storage interface: It has four 44-pin PLCC ROM sockets, which can be used for expanded storage.

Communication interface: Equipped with an Ethernet interface and supporting Ethernet Global Data (EGD) function. Each PACSystems CPU supports up to 255 simultaneous EGD pages on all Ethernet interfaces of the PLC. It can be configured to generate and consume pages, and supports 2msec EGD page generation and timeout solutions. Furthermore, it usually has multiple serial ports, such as the EIA-232-D serial port, which is used for serial communication with other devices.

Indicator lights: The front panel is equipped with multiple LED indicator lights, including Module Normal (EOK), LAN Online (LAN), Status (STAT), two active leds (LINK), and two speed leds (100), which can visually display the operating status of the device and the network connection situation.

Power supply requirements: A power input of + 5VDC (±5%) is typically required, with a typical current of 3.5A and a maximum current of 4.5A (depending on the configuration).

Working principle: The MVME167-32B interacts with other modules via the VME bus and can be used as either a master device or a slave device. The processor processes the input data according to the program instructions, stores the program and data in memory, and communicates with external devices through Ethernet interfaces or serial ports, etc., to achieve the sending and receiving of data. Users can control the operation of the CPU through the three-digit run/stop switch, or remotely control it through the additional programmer and programming software. Program and configuration data can be locked by software passwords to ensure system security.

Firmware upgrade: The CPU uses non-volatile flash memory to store the operating system firmware, allowing for firmware updates without the need to remove modules or replace EPROM. The update of the operating system firmware can be completed by connecting a PC-compatible computer to the serial port of the module and running the software included in the firmware upgrade package.

Specific application cases:

Application in CNC machinery: The MVME167-32B can be used as the core control unit of a CNC machining center. It can quickly process the position feedback signal from the sensor, precisely control the operation of the servo motor, achieve precise control of the tool path, and ensure the high precision of part processing. For instance, in the numerical control machining of automotive engine blocks, the machining accuracy of cylinder holes can be ensured to be at the micrometer level, thereby enhancing the performance and reliability of the engine.

Application in petrochemicals: In the petrochemical production process, MVME167-32B can be used in distributed control systems (DCS). It is responsible for collecting various process parameters on site, such as temperature, pressure, flow rate, etc., and conducting real-time data processing and analysis. According to the preset control strategy, it outputs control signals, adjusts the valve opening, pump speed, etc., to achieve stable control of the production process. In the atmospheric and vacuum distillation unit of an oil refinery, it can ensure the stability of temperature and pressure in each tower section, improving the separation effect of oil products and product quality.

Application in textile printing and dyeing: This module can be applied to the control system of textile machinery. For instance, in air-jet looms, the MVME167-32B can precisely control the air-jet time and air pressure, achieving a high-speed and stable weaving process. Meanwhile, it can also conduct real-time monitoring and adjustment of parameters such as the tension and weft density of the fabric, improve the quality of the fabric and production efficiency, and meet the requirements of high automation and high precision in modern textile industry.

Application in power systems: The MVME167-32B can be used in relay protection devices and substation automation systems of power systems. In relay protection, it can quickly collect signals such as current and voltage from power lines, conduct fault detection and analysis, and promptly issue trip instructions to protect power equipment from damage caused by faults. In the substation automation system, monitoring and control of various equipment within the substation can be achieved, such as transformer oil temperature monitoring and switch status control, thereby enhancing the operational reliability and automation level of the substation.

Application in water treatment/environmental protection: In sewage treatment plants, the MVME167-32B can be used in sewage treatment control systems. It can monitor the water quality parameters of sewage in real time, such as COD and ammonia nitrogen content, as well as the operating status of sewage treatment equipment. According to the water quality conditions, it can automatically adjust parameters such as the dosage of chemicals and aeration time to ensure that the sewage treatment effect meets the discharge standards. At the same time, it optimizes the operation of the equipment and reduces energy consumption.