Joseph Doherty
52 lines
2.9 KiB
C#
52 lines
2.9 KiB
C#
using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
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namespace ZB.MOM.WW.OtOpcUa.Driver.AbLegacy;
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/// <summary>
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/// MicroLogix 1100/1400 function-file sub-element catalogue (#245): the driver-surface type of
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/// <c>RTC:0.HR</c>, <c>HSC:0.ACC</c>, ... Covers the commonly-addressed members per file — not exhaustive
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/// (Rockwell defines 30+ on RTC alone). <b>Unverified on the wire:</b> the layouts are transcribed from the
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/// MicroLogix instruction-set reference; neither transport has been captured against these files and the
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/// native transport has no encoding for them at all.
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/// </summary>
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public static class AbLegacyFunctionFile
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{
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/// <summary>
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/// Driver-surface type for <paramref name="fileLetter"/>.<paramref name="subElement"/>; an unrecognised
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/// sub-element falls back to <see cref="DriverDataType.Int32"/> so the driver never refuses a member the
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/// catalogue happens to omit.
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/// </summary>
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/// <param name="fileLetter">The function-file letter (RTC, HSC, ...).</param>
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/// <param name="subElement">The sub-element mnemonic, or null.</param>
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/// <returns>The mapped driver data type.</returns>
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public static DriverDataType SubElementType(string fileLetter, string? subElement)
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{
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if (subElement is null) return DriverDataType.Int32;
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return (fileLetter.ToUpperInvariant(), subElement.ToUpperInvariant()) switch
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{
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// Real-time clock: time fields are 16-bit words; DS (disabled) / BL (battery low) are flags.
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("RTC", "DS") or ("RTC", "BL") or ("RTC", "EN") => DriverDataType.Boolean,
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// High-speed counter: accumulator/preset/overflow/underflow are numeric, the rest status bits.
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("HSC", "EN") or ("HSC", "UF") or ("HSC", "IF") or ("HSC", "IN") or ("HSC", "IH") or
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("HSC", "IL") or ("HSC", "DN") or ("HSC", "CD") or ("HSC", "CU") => DriverDataType.Boolean,
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// Daylight saving + memory-module info.
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("DLS", "EN") => DriverDataType.Boolean,
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("MMI", "MP") or ("MMI", "MCP") => DriverDataType.Boolean,
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// Pulse-train / PWM outputs.
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("PTO", "EN") or ("PTO", "DN") or ("PTO", "EH") or ("PTO", "ED") or ("PTO", "RP") or ("PTO", "OUT") => DriverDataType.Boolean,
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("PWM", "EN") or ("PWM", "DN") or ("PWM", "EH") or ("PWM", "ED") or ("PWM", "RP") or ("PWM", "OUT") => DriverDataType.Boolean,
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// Selectable timed interrupt + event input interrupt.
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("STI", "EN") or ("STI", "TIE") or ("STI", "DN") or ("STI", "PS") or ("STI", "ED") => DriverDataType.Boolean,
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("EII", "EN") or ("EII", "TIE") or ("EII", "PE") or ("EII", "ES") or ("EII", "ED") => DriverDataType.Boolean,
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// Everything else (HR/MIN/SEC/MON/DAY/YR/DOW, ACC/PRE/OVF/UNF, STR/STD, FT/LBN, OF/IDA/ODA/PE/PD,
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// SPM/ER/PFN, ID/TYP, OS/FRN/BSN/CC, ...) is a numeric word.
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_ => DriverDataType.Int32,
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};
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}
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}
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