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37 lines
1.3 KiB
C#
37 lines
1.3 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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namespace ThingsGateway.Foundation.Adapter.Siemens;
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/// <inheritdoc/>
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public class SiemensMessage : MessageBase, IMessage
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{
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/// <inheritdoc/>
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public override int HeadBytesLength => 4;
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/// <inheritdoc/>
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public override bool CheckHeadBytes(byte[] heads)
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{
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HeadBytes = heads;
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byte[] headBytes = HeadBytes;
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if (headBytes == null || headBytes.Length < 4)
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BodyLength = 0;
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int length = (HeadBytes[2] * 256) + HeadBytes[3] - 4;
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if (length < 0)
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length = 0;
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BodyLength = length;
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return HeadBytes != null && HeadBytes[0] == 3 && HeadBytes[1] == 0;
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}
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} |