diff --git a/generated/ethernetperformancemonitoringhistorydata.go b/generated/ethernetperformancemonitoringhistorydata.go
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+/*
+ * Copyright (c) 2018 - present.  Boling Consulting Solutions (bcsw.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*
+ * NOTE: This file was generated, manual edits will be overwritten!
+ *
+ * Generated by 'goCodeGenerator.py':
+ *              https://github.com/cboling/OMCI-parser/README.md
+ */
+
+package generated
+
+import "github.com/deckarep/golang-set"
+
+// EthernetPerformanceMonitoringHistoryDataClassID is the 16-bit ID for the OMCI
+// Managed entity Ethernet performance monitoring history data
+const EthernetPerformanceMonitoringHistoryDataClassID ClassID = ClassID(24)
+
+var ethernetperformancemonitoringhistorydataBME *ManagedEntityDefinition
+
+// EthernetPerformanceMonitoringHistoryData (class ID #24)
+//	This ME collects some of the PM data for a physical Ethernet interface. Instances of this ME are
+//	created and deleted by the OLT.
+//
+//	For a complete discussion of generic PM architecture, refer to clause I.4.
+//
+//	Relationships
+//		An instance of this ME is associated with an instance of the PPTP Ethernet UNI.
+//
+//	Attributes
+//		Managed Entity Id
+//			Managed entity ID: This attribute uniquely identifies each instance of this ME. Through an
+//			identical ID, this ME is implicitly linked to an instance of the PPTP Ethernet UNI. (R,
+//			setbycreate) (mandatory) (2-bytes)
+//
+//		Interval End Time
+//			Interval end time: This attribute identifies the most recently finished 15-min interval. (R)
+//			(mandatory) (1-byte)
+//
+//		Threshold Data 1_2 Id
+//			Threshold data 1/2 ID: This attribute points to an instance of the threshold data 1 and 2 MEs
+//			that contains PM threshold values. (R,-W, setbycreate) (mandatory) (2-bytes)
+//
+//		Fcs Errors
+//			FCS errors:	This attribute counts frames received on a particular interface that were an
+//			integral number of octets in length but failed the FCS check. The count is incremented when the
+//			MAC service returns the frameCheckError status to the link layer control (LLC) or other MAC
+//			user. Received frames for which multiple error conditions are obtained are counted according to
+//			the error status presented to the LLC. (R) (mandatory) (4-bytes)
+//
+//		Excessive Collision Counter
+//			Excessive collision counter: This attribute counts frames whose transmission failed due to
+//			excessive collisions.-(R) (mandatory) (4-bytes)
+//
+//		Late Collision Counter
+//			Late collision counter: This attribute counts the number of times that a collision was detected
+//			later than 512 bit times into the transmission of a packet. (R) (mandatory) (4-bytes)
+//
+//		Frames Too Long
+//			Frames too long: This attribute counts received frames that exceeded the maximum permitted frame
+//			size. The count is incremented when the MAC service returns the frameTooLong status to the LLC.
+//			(R) (mandatory) (4-bytes)
+//
+//		Buffer Overflows On Receive
+//			Buffer overflows on receive: This attribute counts the number of times that the receive buffer
+//			overflowed. (R) (mandatory) (4-bytes)
+//
+//		Buffer Overflows On Transmit
+//			Buffer overflows on transmit: This attribute counts the number of times that the transmit buffer
+//			overflowed. (R) (mandatory) (4-bytes)
+//
+//		Single Collision Frame Counter
+//			Single collision frame counter: This attribute counts successfully transmitted frames whose
+//			transmission was delayed by exactly one collision. (R) (mandatory) (4-bytes)
+//
+//		Multiple Collisions Frame Counter
+//			Multiple collisions frame counter: This attribute counts successfully transmitted frames whose
+//			transmission was delayed by more than one collision. (R) (mandatory) (4-bytes)
+//
+//		Sqe Counter
+//			SQE counter: This attribute counts the number of times that the SQE test error message was
+//			generated by the PLS sublayer. (R) (mandatory) (4-bytes)
+//
+//		Deferred Transmission Counter
+//			Deferred transmission counter: This attribute counts frames whose first transmission attempt was
+//			delayed because the medium was busy. The count does not include frames involved in collisions.
+//			(R) (mandatory) (4-bytes)
+//
+//		Internal Mac Transmit Error Counter
+//			Internal MAC transmit error counter: This attribute counts frames whose transmission failed due
+//			to an internal MAC sublayer transmit error. (R) (mandatory) (4-bytes)
+//
+//		Carrier Sense Error Counter
+//			Carrier sense error counter: This attribute counts the number of times that carrier sense was
+//			lost or never asserted when attempting to transmit a frame. (R) (mandatory) (4-bytes)
+//
+//		Alignment Error Counter
+//			Alignment error counter: This attribute counts received frames that were not an integral number
+//			of octets in length and did not pass the FCS check. (R) (mandatory) (4-bytes)
+//
+//		Internal Mac Receive Error Counter
+//			Internal MAC receive error counter: This attribute counts frames whose reception failed due to
+//			an internal MAC sublayer receive error. (R) (mandatory) (4-bytes)
+//
+type EthernetPerformanceMonitoringHistoryData struct {
+	ManagedEntityDefinition
+	Attributes AttributeValueMap
+}
+
+func init() {
+	ethernetperformancemonitoringhistorydataBME = &ManagedEntityDefinition{
+		Name:    "EthernetPerformanceMonitoringHistoryData",
+		ClassID: 24,
+		MessageTypes: mapset.NewSetWith(
+			Create,
+			Delete,
+			Get,
+			Set,
+		),
+		AllowedAttributeMask: 0xffff,
+		AttributeDefinitions: AttributeDefinitionMap{
+			0:  Uint16Field("ManagedEntityId", PointerAttributeType, 0x0000, 0, mapset.NewSetWith(Read, SetByCreate), false, false, false, 0),
+			1:  ByteField("IntervalEndTime", UnsignedIntegerAttributeType, 0x8000, 0, mapset.NewSetWith(Read), false, false, false, 1),
+			2:  Uint16Field("ThresholdData12Id", PointerAttributeType, 0x4000, 0, mapset.NewSetWith(Read, SetByCreate, Write), false, false, false, 2),
+			3:  Uint32Field("FcsErrors", CounterAttributeType, 0x2000, 0, mapset.NewSetWith(Read), false, false, false, 3),
+			4:  Uint32Field("ExcessiveCollisionCounter", CounterAttributeType, 0x1000, 0, mapset.NewSetWith(Read), false, false, false, 4),
+			5:  Uint32Field("LateCollisionCounter", CounterAttributeType, 0x0800, 0, mapset.NewSetWith(Read), false, false, false, 5),
+			6:  Uint32Field("FramesTooLong", CounterAttributeType, 0x0400, 0, mapset.NewSetWith(Read), false, false, false, 6),
+			7:  Uint32Field("BufferOverflowsOnReceive", CounterAttributeType, 0x0200, 0, mapset.NewSetWith(Read), false, false, false, 7),
+			8:  Uint32Field("BufferOverflowsOnTransmit", CounterAttributeType, 0x0100, 0, mapset.NewSetWith(Read), false, false, false, 8),
+			9:  Uint32Field("SingleCollisionFrameCounter", CounterAttributeType, 0x0080, 0, mapset.NewSetWith(Read), false, false, false, 9),
+			10: Uint32Field("MultipleCollisionsFrameCounter", CounterAttributeType, 0x0040, 0, mapset.NewSetWith(Read), false, false, false, 10),
+			11: Uint32Field("SqeCounter", CounterAttributeType, 0x0020, 0, mapset.NewSetWith(Read), false, false, false, 11),
+			12: Uint32Field("DeferredTransmissionCounter", CounterAttributeType, 0x0010, 0, mapset.NewSetWith(Read), false, false, false, 12),
+			13: Uint32Field("InternalMacTransmitErrorCounter", CounterAttributeType, 0x0008, 0, mapset.NewSetWith(Read), false, false, false, 13),
+			14: Uint32Field("CarrierSenseErrorCounter", CounterAttributeType, 0x0004, 0, mapset.NewSetWith(Read), false, false, false, 14),
+			15: Uint32Field("AlignmentErrorCounter", CounterAttributeType, 0x0002, 0, mapset.NewSetWith(Read), false, false, false, 15),
+			16: Uint32Field("InternalMacReceiveErrorCounter", CounterAttributeType, 0x0001, 0, mapset.NewSetWith(Read), false, false, false, 16),
+		},
+		Access:  CreatedByOlt,
+		Support: UnknownSupport,
+	}
+}
+
+// NewEthernetPerformanceMonitoringHistoryData (class ID 24) creates the basic
+// Managed Entity definition that is used to validate an ME of this type that
+// is received from or transmitted to the OMCC.
+func NewEthernetPerformanceMonitoringHistoryData(params ...ParamData) (*ManagedEntity, OmciErrors) {
+	return NewManagedEntity(*ethernetperformancemonitoringhistorydataBME, params...)
+}