87 lines
2.7 KiB
C#
87 lines
2.7 KiB
C#
#region copyright
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//------------------------------------------------------------------------------
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// 此代码版权声明为全文件覆盖，如有原作者特别声明，会在下方手动补充
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// 此代码版权（除特别声明外的代码）归作者本人Diego所有
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// 源代码使用协议遵循本仓库的开源协议及附加协议
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// Gitee源代码仓库：https://gitee.com/diego2098/ThingsGateway
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// Github源代码仓库：https://github.com/kimdiego2098/ThingsGateway
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// 使用文档：https://diego2098.gitee.io/thingsgateway-docs/
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// QQ群：605534569
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//------------------------------------------------------------------------------
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#endregion
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using ThingsGateway.Foundation.Extension.Generic;
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namespace ThingsGateway.Foundation.Adapter.Modbus;
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/// <summary>
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/// Rtu适配器
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/// </summary>
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public class ModbusRtuDataHandleAdapter : ReadWriteDevicesTcpDataHandleAdapter<ModbusRtuMessage>
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{
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/// <summary>
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/// 检测CRC
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/// </summary>
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public bool Crc16CheckEnable { get; set; } = true;
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/// <summary>
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/// <inheritdoc/>
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/// </summary>
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/// <param name="command"></param>
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/// <returns></returns>
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public override byte[] PackCommand(byte[] command)
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{
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return ModbusHelper.AddCrc(command);
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}
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/// <inheritdoc/>
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protected override ModbusRtuMessage GetInstance()
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{
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return new ModbusRtuMessage();
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}
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/// <inheritdoc/>
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protected override FilterResult UnpackResponse(ModbusRtuMessage request, byte[] send, byte[] body, byte[] response)
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{
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//链路干扰时需剔除前缀中的多于字节，初步按站号+功能码找寻初始字节
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if (send?.Length > 0)
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{
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int index = -1;
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for (int i = 0; i < response.Length - 1; i++)
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{
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if (response[i] == send[0] && (response[i + 1] == send[1] || response[i + 1] == (send[1] + 0x80)))
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{
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index = i;
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break;
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}
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}
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if (index >= 0)
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{
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response = response.RemoveBegin(index);
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}
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//理想状态检测
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var result = ModbusHelper.GetModbusRtuData(send, response, Crc16CheckEnable);
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if (result.IsSuccess)
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{
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request.ErrorCode = result.ErrorCode;
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request.Message = result.Message;
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request.Content = result.Content;
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}
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else
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{
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request.ErrorCode = result.ErrorCode;
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request.Message = result.Message;
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}
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return result.Content2;
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}
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else
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{
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return FilterResult.Success;
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}
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}
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}
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