XYCOM XVME-212可编程扫描仪模块 PDF资料
1.产 品 资 料 介 绍：
XYCOM XVME-212 可编程扫描仪模块 是一款基于 VMEbus 架构的工业数字输入模块，主要用于对现场开关量信号进行采集与智能扫描处理，在自动化系统中应用广泛。
一、产品概述
型号：XVME-212
类型：数字输入（DI）模块
总线结构：VMEbus
输入通道：32路
该模块用于接收来自现场设备的离散信号，并通过内部扫描机制将数据传输至控制系统。
二、核心功能特点
支持32路数字量输入，满足多点采集需求
内置可编程扫描器，实现自动检测输入状态
支持状态变化触发（Change-of-State）
输入变化时自动产生中断信号
集成去抖功能，提高信号可靠性
光电隔离设计，增强抗干扰性能
三、工作原理
模块对所有输入通道进行循环扫描，当检测到任一通道状态发生变化时，会立即记录变化信息并触发中断，通知CPU进行数据读取与处理，从而避免传统轮询方式带来的资源占用问题。
The XYCOM XVME-212 programmable scanner module is an industrial digital input module based on the VMEbus architecture, mainly used for collecting and intelligently scanning on-site switch signals, and is widely used in automation systems.
1、 Product Overview
Model: XVME-212
Type: Digital Input (DI) Module
Bus structure: VMEbus
Input channel: 32 channels
This module is used to receive discrete signals from field devices and transmit data to the control system through an internal scanning mechanism.
2、 Core functional features
Supports 32 channels of digital input to meet multi-point acquisition requirements
Built in programmable scanner for automatic detection of input status
Support Change of State triggering
Automatically generate interrupt signal when input changes
Integrate debounce function to improve signal reliability
Optoelectronic isolation design enhances anti-interference performance
3、 Working principle
The module performs a cyclic scan on all input channels. When any channel status changes are detected, the change information is immediately recorded and an interrupt is triggered to notify the CPU to read and process data, thereby avoiding the resource consumption problem caused by traditional polling methods.