50 lines
1.8 KiB
C#
50 lines
1.8 KiB
C#
using InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Accessors;
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using InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Replies;
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using InnovEnergy.Lib.Utils;
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namespace InnovEnergy.Lib.Protocols.Modbus.Protocol.Frames.Commands;
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internal class ReadCoilsCommandFrame : ModbusFrame
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{
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private const Int32 Size = 6;
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private MbWord ReadAddress => Data.WordAt(2);
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private MbWord QuantityOfInputs => Data.WordAt(4);
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public ReadCoilsCommandFrame(Byte slave, UInt16 readAddress, UInt16 nBits) : base(Size)
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{
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if (nBits > Constants.MaxCoils)
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throw new ArgumentOutOfRangeException($"Maximum number of registers ({Constants.MaxCoils}) exceeeded!", nameof(nBits));
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SlaveAddress .Set(slave);
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FunctionCode .Set(Protocol.FunctionCode.ReadCoils);
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ReadAddress .Set(readAddress);
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QuantityOfInputs.Set(nBits);
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}
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private ReadCoilsCommandFrame(ArraySegment<Byte> data) : base(data)
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{
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if (data.Count != Size)
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throw new ArgumentException($"Expecting an array of size {Size}", nameof(data));
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AssertFunctionCode(Protocol.FunctionCode.ReadCoils);
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}
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public ReadCoilsResponseFrame VerifyResponse(ReadCoilsResponseFrame response)
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{
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if (response.SlaveAddress != SlaveAddress)
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throw new UnexpectedResponseFieldException(nameof(response.SlaveAddress), SlaveAddress.ToString(), response.SlaveAddress);
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if (response.Inputs.Count != Math.Ceiling(QuantityOfInputs / 8.0).ConvertTo<Int32>() * 8)
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throw new UnexpectedResponseFieldException(nameof(response.Inputs), QuantityOfInputs.ToString(), response.Inputs.Count);
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return response;
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}
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public static ReadCoilsCommandFrame Parse(ArraySegment<Byte> data)
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{
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return new ReadCoilsCommandFrame(data);
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}
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} |