72 lines
2.2 KiB
C#
72 lines
2.2 KiB
C#
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using Opc.Ua;
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using Opc.Ua.Client;
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using System;
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using System.Collections.Generic;
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using System.Threading;
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using System.Threading.Tasks;
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namespace DMS.Infrastructure.Interfaces.Services
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{
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public interface IOpcUaService
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{
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/// <summary>
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/// 创建 OPC UA 会话
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/// </summary>
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/// <param name="opcUaServerUrl">OPC UA 服务器地址</param>
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/// <param name="stoppingToken">取消令牌</param>
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/// <returns></returns>
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public Task CreateSession(string opcUaServerUrl, CancellationToken stoppingToken = default);
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/// <summary>
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/// 连接到 OPC UA 服务器（异步）
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/// </summary>
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/// <param name="stoppingToken">取消令牌</param>
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/// <returns></returns>
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public Task ConnectAsync(CancellationToken stoppingToken = default);
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/// <summary>
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/// 连接到 OPC UA 服务器（同步）
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/// </summary>
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public void Connect();
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/// <summary>
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/// 断开 OPC UA 服务器连接
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/// </summary>
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public void Disconnect();
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/// <summary>
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/// 添加订阅
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/// </summary>
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/// <param name="subscriptionName">订阅名称</param>
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/// <returns>创建的订阅</returns>
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public Subscription AddSubscription(string subscriptionName);
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/// <summary>
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/// 浏览节点
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/// </summary>
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/// <param name="nodeId">起始节点ID</param>
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/// <returns>节点引用列表</returns>
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public IList<ReferenceDescription> BrowseNodes(NodeId nodeId);
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/// <summary>
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/// 读取节点值
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/// </summary>
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/// <param name="nodeId">节点ID</param>
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/// <returns>节点值</returns>
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public DataValue ReadValue(NodeId nodeId);
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/// <summary>
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/// 写入节点值
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/// </summary>
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/// <param name="nodeId">节点ID</param>
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/// <param name="value">要写入的值</param>
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/// <returns>写入结果</returns>
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public StatusCode WriteValue(NodeId nodeId, object value);
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/// <summary>
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/// 检查是否已连接
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/// </summary>
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/// <returns></returns>
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public bool IsConnected();
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}
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}
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