DIDO节点功能说明-节点介绍EG系列网关硬件节点-成都纵横智控

DIDO节点功能说明-节点介绍EG系列网关硬件节点

2025-03-06 11:00:37 阅读：发布人：纵横智控

详细原文：DI/DO

DI

概述

EG系列边缘计算网关自带若干路开关量输入接口（DI），支持检测NPN(包括干接点)和PNP。默认支持NPN模式，如需要PNP，请在采购时向客服说明。

当DI节点检测到DI接口的信号有变化时，会主动输出1/0来表示当前DI接口的状态。

输入

#无输入口

输出

msg.payload

# 1：DI检测到高电平 0：DI检测到低电平

功能

1. 定时刷新状态

DI节点会根据设置的时间，周期性的刷新当前的DI状态。存储在全局变量“DI_X”中，X为DI的通道号。当然，即使不设置定时刷新，DI如果发生状态变化也会主动更新“DI_X”。

2. 全局变量

在函数计算如果需要获DI的当前状态，可以使用以下语法获取：

global.get("DI_1")

#注意1:流程内至少存在一个开关量输入节点，才会使能开关量输入的全局变量，才能读取

#注意2:如果已经初始化了全局变量，重启网关才能删除全局变量

全局变量可以很直观的在右侧全局变量窗口查看：

示例

手动改变DI1口接近开关传感器的状态，观察结果。同时通过函数计算节点读取全局变量：

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DO

概述

EG系列边缘计算网关自带若干路继电器输出（DO），可以通过对DO节点写入1/0或者true/false来实现控制继电器的吸合或者断开。

继电器容量：10A/250VAC 30VDC，即最大可直接承载2500W的用电设备。一般接大功率用电设备时，建议加接触器或者中间继电器进行强弱电隔离。

输入

msg.payload

# 1：继电器吸合 0：继电器断开

#true：继电器吸合 false：继电器断开

输出

msg.payload

# 1：继电器吸合 0：继电器断开

功能

1. 定时刷新状态

DO节点会根据设置的时间，周期性的刷新当前的继电器状态。存储在全局变量“DO_X”中，X为继电器的通道号。

2. 全局变量

在函数计算如果需要获取继电器的当前状态，可以使用以下语法获取：

global.get("DO_1")

#注意1:流程内至少存在一个继电器节点，才会使能继电器的全局变量，才能读取

#注意2:如果已经初始化了全局变量，重启网关才能删除全局变量

全局变量可以很直观的在右侧全局变量窗口查看：

示例

1. 控制继电器&获取继电器状态

函数计算读取DO_1即第一路继电器的状态，赋值给msg.payload后通过调试2打印在日志窗口：

1. 控制继电器&获取继电器状态函数计算读取DO_1即第一路继电器的状态，赋值给msg.payload后通过调试2打印在日志窗口：

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2. 全局变量

函数计算读取DO_1即第一路继电器的状态，如果此时流程内没有继电器输出节点，则会提示未定义：

2. 全局变量函数计算读取DO_1即第一路继电器的状态，如果此时流程内没有继电器输出节点，则会提示未定义：

3. 开启接口供电（EG8208）

对于EG8208（规格书），如图VCC-GND端口用于对外提供电压输出（给网关供电的电源电压），可以为连接的RS485传感器供电。可视化中DO节点的作用则为开启/关闭这个接口供电。

3. 开启接口供电（EG8208）对于EG8208（规格书），如图VCC-GND端口用于对外提供电压输出（给网关供电的电源电压），可以为连接的RS485传感器供电。可视化中DO节点的作用则为开启/关闭这个接口供电。

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