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- using PLC.Siemens.Protocol.ReadData;
- using PlcSiemens.Core.Extension;
- using PlcSiemens.O;
- using PlcSiemens.Protocol.Common;
- namespace PlcSiemens.Protocol.ReadData
- {
- public class ReadParamsRequest
- {
- public byte FunRead { get; set; }
- public byte ItemsCount { get; set; }
- public ReadItemRequest[] Items { get; set; }//×î´ó³¤¶È20
- public byte PacketLength
- {
- get
- {
- return (byte)(0x0C * Items.Length + 2);
- }
- }
- public void Build(List<DataItem> dataItems)
- {
- //Header
- FunRead = (byte)PduFuncType.PduFuncRead;
- ItemsCount = (byte)dataItems.Count;
- //Ïî´¦Àí
- Items = new ReadItemRequest[ItemsCount];
- for (var i = 0; i < dataItems.Count; i++)
- {
- var dataItem = dataItems[i];
- var item = new ReadItemRequest();
- Items[i] = item;
- item.ItemHead[0] = 0x12;
- item.ItemHead[1] = 0x0A;
- item.ItemHead[2] = 0x10;
- item.TransportSize = (byte)dataItem.DataType;
- item.Length = dataItem.Length;
- if (dataItem.AreaType == AreaType.DB)
- item.DB = dataItem.Db;
- else
- item.DB = 0x0000;
- item.Area = (byte)dataItem.AreaType;
- long address;
- if ((dataItem.DataType == DataType.Bit) || (dataItem.DataType == DataType.Counter) || (dataItem.DataType == DataType.Timer))
- address = dataItem.Start;
- else
- address = (dataItem.Start * 8);
- item.Address[2] = (byte)(address & 0x000000FF);
- address = (ushort)(address >> 8);
- item.Address[1] = (byte)(address & 0x000000FF);
- address = (ushort)(address >> 8);
- item.Address[0] = (byte)(address & 0x000000FF);
- }
- }
- public void GetByteBuffer(ByteBuffer buffer)
- {
- buffer.Push(FunRead);
- buffer.Push(ItemsCount);
- Items.ForEach(t =>
- {
- buffer.Push(t.ItemHead);
- buffer.Push(t.TransportSize);
- buffer.Push(t.Length);
- buffer.Push(t.DB);
- buffer.Push(t.Area);
- buffer.Push(t.Address);
- });
- }
- }
- }
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