diff --git a/ats/verify/simulation/wayside/memory/wayside_memory_map.go b/ats/verify/simulation/wayside/memory/wayside_memory_map.go
index 890c123..05e30b0 100644
--- a/ats/verify/simulation/wayside/memory/wayside_memory_map.go
+++ b/ats/verify/simulation/wayside/memory/wayside_memory_map.go
@@ -13,9 +13,11 @@ import (
 
 	"google.golang.org/protobuf/proto"
 	"joylink.club/bj-rtsts-server/ats/verify/protos/graphicData"
+	"joylink.club/bj-rtsts-server/ats/verify/protos/state"
 	"joylink.club/bj-rtsts-server/db/dbquery"
 	"joylink.club/bj-rtsts-server/db/model"
 	"joylink.club/bj-rtsts-server/dto"
+	"joylink.club/bj-rtsts-server/sys_error"
 )
 
 var (
@@ -95,13 +97,14 @@ func QueryGiId(name string) int32 {
 }
 
 // 根据区段，道岔偏移量返回linkID和link相对偏移量
-func QueryEcsLinkByDeviceInfo(repo *repository.Repository, mapId int32, id string, devicePort string, offset int64, runDirection bool) (int32, int64, bool, bool, int64) {
-	if devicePort == "" {
+func QueryEcsLinkByDeviceInfo(repo *repository.Repository, mapId int32, status *state.TrainState) (int32, int64, bool, bool, int64) {
+	id := status.HeadDeviceId
+	if status.DevicePort == "" {
 		uid := QueryUidByMidAndComId(mapId, id, &graphicData.Section{})
-		return sectionMapToEcsLink(repo, uid, offset, runDirection)
+		return sectionMapToEcsLink(repo, uid, status)
 	} else {
 		uid := QueryUidByMidAndComId(mapId, id, &graphicData.Turnout{})
-		return turnoutMapToEcsLink(repo, uid, devicePort, offset, runDirection)
+		return turnoutMapToEcsLink(repo, uid, status)
 	}
 }
 
@@ -122,11 +125,15 @@ func getStorageIBPMapData(mapCode string) *graphicData.IBPGraphicStorage {
 }
 
 // 根据物理区段上的偏移量（基于区段A端），找到所在link的linkId与偏移量
-func sectionMapToEcsLink(repo *repository.Repository, id string, offset int64, runDirection bool) (int32, int64, bool, bool, int64) {
+func sectionMapToEcsLink(repo *repository.Repository, id string, status *state.TrainState) (int32, int64, bool, bool, int64) {
+	runDirection := status.RunDirection
 	section := repo.FindPhysicalSection(id)
 	if section == nil {
-		panic(&dto.ErrorDto{Code: dto.DataNotExist, Message: fmt.Sprintf("地图不存在uid:%s缓存", id)})
+		panic(sys_error.New(fmt.Sprintf("地图不存在uid:%s缓存", id)))
 	}
+	link := section.ALinkPosition().Link()
+	// 检查link偏移
+	status.HeadOffset = checkOffsetInLink(status.HeadOffset, status.TrainLength, link)
 	ao, bo := section.ALinkPosition().Offset(), section.BLinkPosition().Offset()
 	// 是否从A到B，统一坐标
 	ak, bk := convertRepoBaseKm(repo, section.AKilometer()), convertRepoBaseKm(repo, section.BKilometer())
@@ -148,20 +155,21 @@ func sectionMapToEcsLink(repo *repository.Repository, id string, offset int64, r
 			up = ao > bo
 		}
 	}
-	linkId, _ := strconv.Atoi(section.ALinkPosition().Link().Identity.Id())
-	trainKilometer := concertTrainKilometer(akv, offset, up)
+	linkId, _ := strconv.Atoi(link.Identity.Id())
+	trainKilometer := concertTrainKilometer(akv, status.HeadOffset, up)
 	if ao < bo {
-		return int32(linkId), ao + offset, up, abDirection, trainKilometer
+		return int32(linkId), ao + status.HeadOffset, up, abDirection, trainKilometer
 	} else {
-		return int32(linkId), ao - offset, up, abDirection, trainKilometer
+		return int32(linkId), ao - status.HeadOffset, up, abDirection, trainKilometer
 	}
 }
 
 // 根据道岔上的偏移量（基于岔心位置），找到所在link的linkId与偏移量
-func turnoutMapToEcsLink(repo *repository.Repository, id string, port string, offset int64, runDirection bool) (int32, int64, bool, bool, int64) {
+func turnoutMapToEcsLink(repo *repository.Repository, id string, status *state.TrainState) (int32, int64, bool, bool, int64) {
+	port, runDirection := status.DevicePort, status.RunDirection
 	turnout := repo.FindTurnout(id)
 	if turnout == nil {
-		panic(dto.ErrorDto{Code: dto.DataNotExist, Message: fmt.Sprintf("不存在道岔【uid:%s】", id)})
+		panic(sys_error.New(fmt.Sprintf("不存在道岔【uid:%s】", id)))
 	}
 	var portPosition *repository.LinkPosition
 	var crossKm, portKm *proto2.Kilometer
@@ -176,30 +184,32 @@ func turnoutMapToEcsLink(repo *repository.Repository, id string, port string, of
 		portPosition = turnout.FindLinkPositionByPort(proto2.Port_C)
 		portKm = turnout.GetTurnoutKm(proto2.Port_C)
 	default:
-		panic(dto.ErrorDto{Code: dto.DataNotExist, Message: fmt.Sprintf("无效端口【%s】偏移量", port)})
+		panic(sys_error.New(fmt.Sprintf("无效端口【%s】偏移量", port)))
 	}
+	// 关联link
+	link := portPosition.Link()
+	// 检查link偏移
+	status.HeadOffset = checkOffsetInLink(status.HeadOffset, status.TrainLength, link)
 	// 岔心公里标
 	crossKm = turnout.GetTurnoutKm(proto2.Port_None)
 	portKm, err := repo.ConvertKilometer(portKm, crossKm.CoordinateSystem)
 	if err != nil {
-		panic(err)
+		panic(sys_error.New("公里标转换出错", err))
 	}
-	// 关联link
-	link := portPosition.Link()
 	isStart := link.ARelation().Device().Id() == id
 	up := runDirection
 	if (portKm.Value > crossKm.Value) != isStart {
 		up = !runDirection
 	}
 	pointTo := (portKm.Value > crossKm.Value) == runDirection
-	trainKilometer := concertTrainKilometer(crossKm.Value, offset, pointTo)
+	trainKilometer := concertTrainKilometer(crossKm.Value, status.HeadOffset, pointTo)
 	linkId, _ := strconv.Atoi(link.Identity.Id())
 	if isStart {
-		return int32(linkId), offset, up, pointTo, trainKilometer
+		return int32(linkId), status.HeadOffset, up, pointTo, trainKilometer
 	} else {
 		// 道岔长度
 		turnoutLen := int64(math.Abs(float64(portKm.Value - crossKm.Value)))
-		return int32(linkId), portPosition.Offset() + turnoutLen - offset, up, pointTo, trainKilometer
+		return int32(linkId), portPosition.Offset() + turnoutLen - status.HeadOffset, up, pointTo, trainKilometer
 	}
 }
 
@@ -355,3 +365,17 @@ func convertRepoBaseKm(r *repository.Repository, km *proto2.Kilometer) *proto2.K
 	}
 	return k
 }
+
+// 检查偏移是否在link上,返回最终的offset
+func checkOffsetInLink(offset, trainLen int64, link *repository.Link) int64 {
+	if offset > link.Length() {
+		panic(sys_error.New(fmt.Sprintf("偏移【%d】超出link范围【%d】", offset, link.Length())))
+	}
+	if trainLen > offset { // 如果列车长度超过设置offset
+		offset = trainLen
+	}
+	if offset > link.Length() {
+		panic(sys_error.New(fmt.Sprintf("列车长度【%d】超出link范围【%d】", trainLen, link.Length())))
+	}
+	return offset
+}
diff --git a/ats/verify/simulation/wayside/memory/wayside_memory_train.go b/ats/verify/simulation/wayside/memory/wayside_memory_train.go
index 38178c3..4f3572d 100644
--- a/ats/verify/simulation/wayside/memory/wayside_memory_train.go
+++ b/ats/verify/simulation/wayside/memory/wayside_memory_train.go
@@ -26,7 +26,7 @@ func AddTrainState(vs *VerifySimulation, status *state.TrainState, mapId int32)
 	//向动力学发送初始化请求
 	trainIndex, _ := strconv.ParseUint(status.Id, 10, 16)
 	// 映射link、偏移量、运行方向
-	linkId, loffset, up, pointTo, kilometer := QueryEcsLinkByDeviceInfo(vs.Repo, mapId, status.HeadDeviceId, status.DevicePort, status.HeadOffset, status.RunDirection)
+	linkId, loffset, up, pointTo, kilometer := QueryEcsLinkByDeviceInfo(vs.Repo, mapId, status)
 	status.Up = up
 	status.PointTo = pointTo
 	status.TrainKilometer = kilometer