Auto: ablegacy-1 — PLC-5 octal I/O addressing

Closes #244

src/ZB.MOM.WW.OtOpcUa.Driver.AbLegacy/PlcFamilies/AbLegacyPlcFamilyProfile.cs

@@ -9,7 +9,8 @@ public sealed record AbLegacyPlcFamilyProfile(
     string DefaultCipPath,
     int MaxTagBytes,
     bool SupportsStringFile,
-    bool SupportsLongFile)
+    bool SupportsLongFile,
+    bool OctalIoAddressing)
 {
     public static AbLegacyPlcFamilyProfile ForFamily(AbLegacyPlcFamily family) => family switch
     {
@@ -25,21 +26,24 @@ public sealed record AbLegacyPlcFamilyProfile(
         DefaultCipPath: "1,0",
         MaxTagBytes: 240,           // SLC 5/05 PCCC max packet data
         SupportsStringFile: true,   // ST file available SLC 5/04+
-        SupportsLongFile: true);    // L file available SLC 5/05+
+        SupportsLongFile: true,     // L file available SLC 5/05+
+        OctalIoAddressing: false);  // SLC500 I:/O: indices are decimal in RSLogix 500
 
     public static readonly AbLegacyPlcFamilyProfile MicroLogix = new(
         LibplctagPlcAttribute: "micrologix",
         DefaultCipPath: "",         // MicroLogix 1100/1400 use direct EIP, no backplane path
         MaxTagBytes: 232,
         SupportsStringFile: true,
-        SupportsLongFile: false);   // ML 1100/1200/1400 don't ship L files
+        SupportsLongFile: false,    // ML 1100/1200/1400 don't ship L files
+        OctalIoAddressing: false);  // MicroLogix follows SLC-style decimal I/O addressing
 
     public static readonly AbLegacyPlcFamilyProfile Plc5 = new(
         LibplctagPlcAttribute: "plc5",
         DefaultCipPath: "1,0",
         MaxTagBytes: 240,           // DF1 full-duplex packet limit at 264 bytes, PCCC-over-EIP caps lower
         SupportsStringFile: true,
-        SupportsLongFile: false);   // PLC-5 predates L files
+        SupportsLongFile: false,    // PLC-5 predates L files
+        OctalIoAddressing: true);   // RSLogix 5 displays I:/O: word + bit indices as octal
 
     /// <summary>
     ///     Logix ControlLogix / CompactLogix accessed through the legacy PCCC compatibility layer.
@@ -51,7 +55,8 @@ public sealed record AbLegacyPlcFamilyProfile(
         DefaultCipPath: "1,0",
         MaxTagBytes: 240,
         SupportsStringFile: true,
-        SupportsLongFile: true);
+        SupportsLongFile: true,
+        OctalIoAddressing: false);  // Logix natively uses decimal arrays even via the PCCC bridge
 }
 
 /// <summary>Which PCCC PLC family the device is.</summary>