Exposed max_requests_in_flight on Tag and Tag<M,T>

src/libplctag/NativeTagWrapper.cs

@@ -281,6 +281,13 @@ public uint? StringTotalLength
         }
 
 
+        private uint? _maxRequetsInFlight;
+        public uint? MaxRequestsInFlight
+        {
+            get => GetField (ref _maxRequetsInFlight);
+            set => SetField(ref _maxRequetsInFlight, value);
+        }
+
 
 
         public void Dispose()
@@ -728,6 +735,7 @@ string FormatPlcType(PlcType? type)
                 { "str_max_capacity",       StringMaxCapacity?.ToString() },
                 { "str_pad_bytes",          StringPadBytes?.ToString() },
                 { "str_total_length",       StringTotalLength?.ToString() },
+                { "max_requests_in_flight", MaxRequestsInFlight?.ToString() },
             };
 
             string separator = "&";

src/libplctag/Tag.cs

@@ -318,6 +318,21 @@ public uint? StringTotalLength
             set => _tag.StringTotalLength = value;
         }
 
+        /// <summary>
+        /// Optional. The Modbus specification allows devices to queue up to 16 requests at once.
+        /// </summary>
+        ///
+        /// <remarks>
+        /// The default is 1 and the maximum is 16.
+        /// This allows the host to send multiple requests without waiting for the device to respond.
+        /// Not all devices support up to 16 requests in flight.
+        /// </remarks>
+        public uint? MaxRequestsInFlight
+        {
+            get => _tag.MaxRequestsInFlight;
+            set => _tag.MaxRequestsInFlight = value;
+        }
+
         /// <summary>
         /// Creates the underlying data structures and references required before tag operations.
         /// </summary>

src/libplctag/TagOfT.cs

@@ -134,6 +134,13 @@ public DebugLevel DebugLevel
             set => _tag.DebugLevel = value;
         }
 
+        /// <inheritdoc cref="Tag.MaxRequestsInFlight"/>
+        public uint? MaxRequestsInFlight
+        {
+            get => _tag.MaxRequestsInFlight;
+            set => _tag.MaxRequestsInFlight = value;
+        }
+
         /// <summary>
         /// Dimensions of Value if it is an array
         /// Ex. {2, 10} for a 2 column, 10 row array