Motorola MVME2431输入输出模块

1.产 品 资 料 介 绍：

Motorola MVME2431 VMEbus 输入 / 输出（I/O）模块解析

一、核心技术特性

1. 多类型 I/O 集成：覆盖数字与模拟场景

（1）数字量 I/O（DI/DO）：高可靠开关信号交互

• 数字输入（DI）：典型支持 16-32 路独立 DI 通道，输入电平兼容 TTL（5V）/ 工业干接点（24V/48V），可直接连接限位开关、光电传感器、按钮等设备，采集 “设备到位”“故障告警” 等开关状态；
  • 部分通道支持 边缘触发中断（上升沿 / 下降沿可配置），当外部信号状态突变时（如急停按钮按下），主动向 CPU 发送中断请求，避免 CPU 轮询占用资源，中断响应延迟≤10μs；
• 数字输出（DO）：典型支持 8-16 路独立 DO 通道，输出类型为 集电极开路 / 推挽输出，每路最大驱动电流 500mA-1A，可直接驱动继电器、电磁阀、指示灯等执行器，实现 “电机启停”“阀门开关” 等控制动作；
  • 输出端集成 过流保护与短路保护，当负载短路或过流时（如继电器线圈粘连），模块自动切断输出电流（保护阈值可通过软件配置），故障排除后可手动 / 自动恢复，避免硬件烧毁。

（2）模拟量 I/O（AI/AO，可选配置）：高精度连续量处理

• 模拟输入（AI）：可选 4-8 路差分 / 单端 AI 通道，分辨率 12-16 位（16 位版本精度 ±0.01%），输入量程支持 ±5V/±10V/0-20mA/4-20mA，可采集温度（通过热电偶 / PT100 变送器）、压力、流量等连续变化的物理量；
  • 集成 信号调理电路（滤波、放大），抑制工业现场的电磁干扰（如电机启停浪涌），采样速率最高 1kHz / 通道，满足实时监控需求（如化工反应釜温度实时采集）；
• 模拟输出（AO）：可选 2-4 路 AO 通道，分辨率 12-16 位，输出量程支持 ±5V/±10V/4-20mA，可驱动伺服驱动器、调节阀、模拟量执行器，实现 “转速连续调节”“阀门开度控制” 等精准输出；
  • 支持 输出值保持功能，当模块与 CPU 通信中断时，可保持当前输出值（如维持阀门开度），避免系统失控。

Motorola MVME2431输入输出模块 英文资料：

Analysis of Motorola MVME2431 VMEbus Input/Output (I/O) Module

The Motorola MVME2431 is an industrial grade multifunctional I/O module based on the VMEbus architecture, positioned as the "I/O expansion hub" of MVME systems. By integrating digital input/output (DI/DO), optional analog input/output (AI/AO), and programmable control logic, it provides an integrated "digital+analog" signal interaction capability for MVME series CPU modules (such as MVME162, MVME2301), suitable for industrial automation, machine tool control, power monitoring, and other scenarios that require simultaneous processing of switch signals and continuous signals. It is a key expansion component for building a complete embedded control system.

1、 Core technical characteristics

1. Multi type I/O integration: covering both digital and analog scenarios

The core advantage of MVME2431 lies in its "multifunctional integration", which can simultaneously process digital switch signals and analog continuous signals without additional expansion, adapting to complex industrial control requirements:

(1) Digital I/O (DI/DO): High reliability switch signal interaction

Digital Input (DI): Typically supports 16-32 independent DI channels, with input levels compatible with TTL (5V)/industrial dry contacts (24V/48V). It can be directly connected to limit switches, photoelectric sensors, buttons, and other devices to collect switch statuses such as "device in place" and "fault alarm";

Some channels support edge triggered interrupts (with configurable rising/falling edges). When the external signal state suddenly changes (such as pressing the emergency stop button), it actively sends interrupt requests to the CPU to avoid CPU polling and resource consumption. The interrupt response delay is ≤ 10 μ s;

Digital Output (DO): Typically supports 8-16 independent DO channels, with output types of open collector/push-pull output. Each channel has a maximum driving current of 500mA-1A and can directly drive relays, solenoid valves, indicator lights, and other actuators to achieve control actions such as "motor start stop" and "valve switch";

The output end integrates overcurrent protection and short-circuit protection. When the load is short circuited or overcurrent (such as relay coil adhesion), the module automatically cuts off the output current (the protection threshold can be configured through software). After troubleshooting, it can be manually/automatically restored to avoid hardware burnout.

(2) Analog I/O (AI/AO, optional configuration): high-precision continuous processing

Analog Input (AI): 4-8 differential/single ended AI channels can be selected, with a resolution of 12-16 bits (16 bit version accuracy ± 0.01%). The input range supports ± 5V/± 10V/0-20mA/4-20mA, and can collect continuously changing physical quantities such as temperature (through thermocouple/PT100 transmitter), pressure, flow rate, etc;

  Motorola MVME2431输入输出模块 产      品      展      示      

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The content is from Ruichang Mingsheng Automation Equipment Co., LTD

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