63 lines
2.9 KiB
C#
63 lines
2.9 KiB
C#
using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
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namespace ZB.MOM.WW.OtOpcUa.Driver.AbCip;
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/// <summary>
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/// Logix atomic + string data types, plus a <see cref="Structure"/> marker used when a tag
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/// references a UDT / predefined structure (Timer, Counter, Control). The concrete UDT
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/// shape is resolved via the CIP Template Object at discovery time (PR 5 / PR 6).
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/// </summary>
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/// <remarks>
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/// Mirrors the shape of <c>ModbusDataType</c>. Atomic Logix names (BOOL / SINT / INT / DINT /
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/// LINT / REAL / LREAL / STRING / DT) map one-to-one; BIT + BOOL-in-DINT collapse into
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/// <see cref="Bool"/> with the <c>.N</c> bit-index carried on the <see cref="AbCipTagPath"/>
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/// rather than the data type itself.
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/// </remarks>
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public enum AbCipDataType
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{
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Bool,
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SInt, // signed 8-bit
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Int, // signed 16-bit
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DInt, // signed 32-bit
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LInt, // signed 64-bit
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USInt, // unsigned 8-bit (Logix 5000 post-V21)
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UInt, // unsigned 16-bit
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UDInt, // unsigned 32-bit
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ULInt, // unsigned 64-bit
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Real, // 32-bit IEEE-754
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LReal, // 64-bit IEEE-754
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String, // Logix STRING (DINT Length + SINT[82] DATA — flattened to .NET string by libplctag)
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Dt, // Date/Time — Logix DT == DINT representing seconds-since-epoch per Rockwell conventions
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/// <summary>
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/// UDT / Predefined Structure (Timer / Counter / Control / Message / Axis). Shape is
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/// resolved at discovery time; reads + writes fan out to member Variables unless the
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/// caller has explicitly opted into whole-UDT decode.
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/// </summary>
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Structure,
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}
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/// <summary>Map a Logix atomic type to the driver-surface <see cref="DriverDataType"/>.</summary>
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public static class AbCipDataTypeExtensions
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{
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/// <summary>
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/// Map to the driver-agnostic type the server's address-space builder consumes. Unsigned
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/// Logix types widen into signed equivalents until <c>DriverDataType</c> picks up unsigned
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/// + 64-bit variants (Modbus has the same gap — see <c>ModbusDriver.MapDataType</c>
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/// comment re: PR 25).
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/// </summary>
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public static DriverDataType ToDriverDataType(this AbCipDataType t) => t switch
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{
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AbCipDataType.Bool => DriverDataType.Boolean,
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AbCipDataType.SInt or AbCipDataType.Int or AbCipDataType.DInt => DriverDataType.Int32,
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AbCipDataType.USInt or AbCipDataType.UInt or AbCipDataType.UDInt => DriverDataType.Int32,
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AbCipDataType.LInt => DriverDataType.Int64,
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AbCipDataType.ULInt => DriverDataType.UInt64,
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AbCipDataType.Real => DriverDataType.Float32,
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AbCipDataType.LReal => DriverDataType.Float64,
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AbCipDataType.String => DriverDataType.String,
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AbCipDataType.Dt => DriverDataType.Int64, // Logix v32+ DT == LINT epoch-millis
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AbCipDataType.Structure => DriverDataType.String, // placeholder until UDT PR 6 introduces a structured kind
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_ => DriverDataType.Int32,
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};
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}
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