diff --git a/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.S7.IntegrationTests/S7_1500/S7_1500CodecTests.cs b/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.S7.IntegrationTests/S7_1500/S7_1500CodecTests.cs
index 9ed3fe9f..2deec614 100644
--- a/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.S7.IntegrationTests/S7_1500/S7_1500CodecTests.cs
+++ b/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.S7.IntegrationTests/S7_1500/S7_1500CodecTests.cs
@@ -8,7 +8,7 @@ namespace ZB.MOM.WW.OtOpcUa.Driver.S7.IntegrationTests.S7_1500;
 ///     Gitea #632 / #638 live coverage: the S7 STRING / WSTRING / CHAR / WCHAR / DTL / DATE / TOD / TIME /
 ///     S5TIME codecs against the python-snap7 S7-1500 profile, over real ISO-on-TCP + S7comm, plus the
 ///     TSAP override keys (<c>LocalTsap</c> / <c>RemoteTsap</c> / <c>ConnectionType</c>) and the negotiated
-///     PDU size. Read seeds live at DB1 800..960 in <c>Docker/profiles/s7_1500.json</c> and are all
+///     PDU size. Wide/date-time types are byte-anchored (DBB) by driver rule. Read seeds live at DB1 800..960 in <c>Docker/profiles/s7_1500.json</c> and are all
 ///     distinct and non-zero, so a decode that returned zero/default cannot pass. Write tests use the
 ///     unseeded DB1 1100..1199 scratch area and additionally need <c>S7_SIM_ALLOW_WRITES=1</c>. Everything
 ///     skips cleanly when <c>S7_SIM_ENDPOINT</c> (default the shared Docker host) is unreachable.
@@ -63,13 +63,13 @@ public sealed class S7_1500CodecTests(Snap7ServerFixture sim)
             new S7TagDefinition("Chr", "DB1.DBB870", S7DataType.Char),
             new S7TagDefinition("WChr", "DB1.DBB872", S7DataType.WChar),
             new S7TagDefinition("Dtl", "DB1.DBB880", S7DataType.Dtl),
-            new S7TagDefinition("Date", "DB1.DBW900", S7DataType.Date),
-            new S7TagDefinition("Tod", "DB1.DBD904", S7DataType.Tod),
-            new S7TagDefinition("TimePos", "DB1.DBD910", S7DataType.Time),
-            new S7TagDefinition("TimeNeg", "DB1.DBD914", S7DataType.Time),
-            new S7TagDefinition("S5Sec", "DB1.DBW920", S7DataType.S5Time),
-            new S7TagDefinition("S5Cs", "DB1.DBW922", S7DataType.S5Time),
-            new S7TagDefinition("DateMax", "DB1.DBW960", S7DataType.Date));
+            new S7TagDefinition("Date", "DB1.DBB900", S7DataType.Date),
+            new S7TagDefinition("Tod", "DB1.DBB904", S7DataType.Tod),
+            new S7TagDefinition("TimePos", "DB1.DBB910", S7DataType.Time),
+            new S7TagDefinition("TimeNeg", "DB1.DBB914", S7DataType.Time),
+            new S7TagDefinition("S5Sec", "DB1.DBB920", S7DataType.S5Time),
+            new S7TagDefinition("S5Cs", "DB1.DBB922", S7DataType.S5Time),
+            new S7TagDefinition("DateMax", "DB1.DBB960", S7DataType.Date));
         await using var drv = new S7Driver(o, "s7-codec-read");
         await drv.InitializeAsync("{}", TestContext.Current.CancellationToken);
 
@@ -100,10 +100,10 @@ public sealed class S7_1500CodecTests(Snap7ServerFixture sim)
         RequireSim();
         var o = Options(sim.Host, sim.Port,
             new S7TagDefinition("DtlUninit", "DB1.DBB930", S7DataType.Dtl),
-            new S7TagDefinition("S5NonBcd", "DB1.DBW940", S7DataType.S5Time),
-            new S7TagDefinition("TodPastMidnight", "DB1.DBD944", S7DataType.Tod),
+            new S7TagDefinition("S5NonBcd", "DB1.DBB940", S7DataType.S5Time),
+            new S7TagDefinition("TodPastMidnight", "DB1.DBB944", S7DataType.Tod),
             new S7TagDefinition("WStrCurOverMax", "DB1.DBB950", S7DataType.WString, StringLength: 3),
-            new S7TagDefinition("Good", "DB1.DBD904", S7DataType.Tod));
+            new S7TagDefinition("Good", "DB1.DBB904", S7DataType.Tod));
         await using var drv = new S7Driver(o, "s7-codec-bad");
         await drv.InitializeAsync("{}", TestContext.Current.CancellationToken);
 
@@ -125,10 +125,10 @@ public sealed class S7_1500CodecTests(Snap7ServerFixture sim)
         new("Chr", "DB1.DBB1150", S7DataType.Char),
         new("WChr", "DB1.DBB1152", S7DataType.WChar),
         new("Dtl", "DB1.DBB1160", S7DataType.Dtl),
-        new("Date", "DB1.DBW1180", S7DataType.Date),
-        new("Tod", "DB1.DBD1184", S7DataType.Tod),
-        new("Time", "DB1.DBD1188", S7DataType.Time),
-        new("S5", "DB1.DBW1192", S7DataType.S5Time),
+        new("Date", "DB1.DBB1180", S7DataType.Date),
+        new("Tod", "DB1.DBB1184", S7DataType.Tod),
+        new("Time", "DB1.DBB1188", S7DataType.Time),
+        new("S5", "DB1.DBB1192", S7DataType.S5Time),
     ];
 
     /// <summary>Write each codec's value, read it back through the driver (distinct non-zero values).</summary>