diff --git a/Doc/ILSOSConfig/ILSOS_PrismaticRD_PTOP/External/PLC/PLC_DeviceMap_Bit_Input_M_Device.csv b/Doc/ILSOSConfig/ILSOS_PrismaticRD_PTOP/External/PLC/PLC_DeviceMap_Bit_Input_M_Device.csv
new file mode 100644
index 0000000..fffea2c
--- /dev/null
+++ b/Doc/ILSOSConfig/ILSOS_PrismaticRD_PTOP/External/PLC/PLC_DeviceMap_Bit_Input_M_Device.csv
@@ -0,0 +1,97 @@
+Device No   ,   Comment ENG                     ,   Comment KOR
+M70500,Live Status,Live Status
+M70501,Auto Status,Auto Status
+M70502,Auto Request,Auto Request
+M70503,Manual Request,Manual Request
+M70504,Light_ALStatus,Light_ALStatus
+M70505,Heavy_ALStatus,Heavy_ALStatus
+M70506,Door Interlok,Door Interlok
+M70507,EMO Status,EMO Status
+M70508,Page_CHGRequest,Page_CHGRequest
+M70509,Recipe_CHGRequest,Recipe_CHGRequest
+M70510,,
+M70511,,
+M70512,,
+M70513,,
+M70514,,
+M70515,Weld_01 ReadyREQ,Weld_01 ReadyREQ
+M70516,Weld_01 TriggerREQ,Weld_01 TriggerREQ
+M70517,Weld_01 Wait,Weld_01 Wait
+M70518,Weld_01 Comp_ACK,Weld_01 Comp_ACK
+M70519,,
+M70520,,
+M70521,,
+M70522,,
+M70523,,
+M70524,,
+M70525,,
+M70526,,
+M70527,,
+M70528,,
+M70529,,
+M70530,,
+M70531,,
+M70532,,
+M70533,,
+M70534,,
+M70535,,
+M70536,,
+M70537,,
+M70538,,
+M70539,,
+M70540,,
+M70541,,
+M70542,,
+M70543,,
+M70544,,
+M70545,,
+M70546,,
+M70547,,
+M70548,,
+M70549,,
+M70550,,
+M70551,,
+M70552,,
+M70553,,
+M70554,,
+M70555,,
+M70556,,
+M70557,,
+M70558,,
+M70559,,
+M70560,,
+M70561,,
+M70562,,
+M70563,,
+M70564,,
+M70565,,
+M70566,,
+M70567,,
+M70568,,
+M70569,,
+M70570,,
+M70571,,
+M70572,,
+M70573,,
+M70574,,
+M70575,,
+M70576,,
+M70577,,
+M70578,,
+M70579,,
+M70580,,
+M70581,,
+M70582,,
+M70583,,
+M70584,,
+M70585,,
+M70586,,
+M70587,,
+M70588,,
+M70589,,
+M70590,,
+M70591,,
+M70592,,
+M70593,,
+M70594,,
+M70595,,
diff --git a/Doc/ILSOSConfig/ILSOS_PrismaticRD_PTOP/External/PLC/PLC_DeviceMap_Bit_Output_M_Device.csv b/Doc/ILSOSConfig/ILSOS_PrismaticRD_PTOP/External/PLC/PLC_DeviceMap_Bit_Output_M_Device.csv
new file mode 100644
index 0000000..70a573b
--- /dev/null
+++ b/Doc/ILSOSConfig/ILSOS_PrismaticRD_PTOP/External/PLC/PLC_DeviceMap_Bit_Output_M_Device.csv
@@ -0,0 +1,97 @@
+Device No   ,   Comment ENG                     ,   Comment KOR
+M70000,Live Status,Live Status
+M70001,Auto Status,Auto Status
+M70002,Auto Complete,Auto Complete
+M70003,Manual Complete,Manual Complete
+M70004,Light_ALStatus,Light_ALStatus
+M70005,Heavy_ALStatus,Heavy_ALStatus
+M70006,,
+M70007,,
+M70008,Page_CHGComplete,Page_CHGComplete
+M70009,Recipe_CHGComplete,Recipe_CHGComplete
+M70010,,
+M70011,,
+M70012,,
+M70013,,
+M70014,,
+M70015,Weld_01 ReadyACK,Weld_01 ReadyACK
+M70016,Weld_01 TriggerACK,Weld_01 TriggerACK
+M70017,Weld_01 Busy,Weld_01 Busy
+M70018,Weld_01 Complete,Weld_01 Complete
+M70019,,
+M70020,,
+M70021,,
+M70022,,
+M70023,,
+M70024,,
+M70025,,
+M70026,,
+M70027,,
+M70028,,
+M70029,,
+M70030,,
+M70031,,
+M70032,,
+M70033,,
+M70034,,
+M70035,,
+M70036,,
+M70037,,
+M70038,,
+M70039,,
+M70040,,
+M70041,,
+M70042,,
+M70043,,
+M70044,,
+M70045,,
+M70046,,
+M70047,,
+M70048,,
+M70049,,
+M70050,,
+M70051,,
+M70052,,
+M70053,,
+M70054,,
+M70055,,
+M70056,,
+M70057,,
+M70058,,
+M70059,,
+M70060,,
+M70061,,
+M70062,,
+M70063,,
+M70064,,
+M70065,,
+M70066,,
+M70067,,
+M70068,,
+M70069,,
+M70070,,
+M70071,,
+M70072,,
+M70073,,
+M70074,,
+M70075,,
+M70076,,
+M70077,,
+M70078,,
+M70079,,
+M70080,,
+M70081,,
+M70082,,
+M70083,,
+M70084,,
+M70085,,
+M70086,,
+M70087,,
+M70088,,
+M70089,,
+M70090,,
+M70091,,
+M70092,,
+M70093,,
+M70094,,
+M70095,,
diff --git a/Doc/ILSOSConfig/ILSOS_PrismaticRD_PTOP/External/PLC/PLC_DeviceMap_Word_Input_D_Device.csv b/Doc/ILSOSConfig/ILSOS_PrismaticRD_PTOP/External/PLC/PLC_DeviceMap_Word_Input_D_Device.csv
new file mode 100644
index 0000000..3dc9b06
--- /dev/null
+++ b/Doc/ILSOSConfig/ILSOS_PrismaticRD_PTOP/External/PLC/PLC_DeviceMap_Word_Input_D_Device.csv
@@ -0,0 +1,101 @@
+Device No   ,   Comment ENG                     ,   Comment KOR
+D70500,PLCErrorCode,PLCErrorCode
+D70501,PLC_PageNo,PLC_PageNo
+D70502,PLC_RecpieNo,PLC_RecpieNo
+D70503,,
+D70504,,
+D70505,,
+D70506,,
+D70507,,
+D70508,,
+D70509,,
+D70510,Head_Theta_Position,Head_Theta_Position
+D70511,,
+D70512,,
+D70513,,
+D70514,,
+D70515,,
+D70516,,
+D70517,,
+D70518,,
+D70519,,
+D70520,,
+D70521,,
+D70522,,
+D70523,,
+D70524,,
+D70525,,
+D70526,,
+D70527,,
+D70528,,
+D70529,,
+D70530,,
+D70531,,
+D70532,,
+D70533,,
+D70534,,
+D70535,,
+D70536,,
+D70537,,
+D70538,,
+D70539,,
+D70540,,
+D70541,,
+D70542,,
+D70543,,
+D70544,,
+D70545,,
+D70546,,
+D70547,,
+D70548,,
+D70549,,
+D70550,,
+D70551,,
+D70552,,
+D70553,,
+D70554,,
+D70555,,
+D70556,,
+D70557,,
+D70558,,
+D70559,,
+D70560,,
+D70561,,
+D70562,,
+D70563,,
+D70564,,
+D70565,,
+D70566,,
+D70567,,
+D70568,,
+D70569,,
+D70570,,
+D70571,,
+D70572,,
+D70573,,
+D70574,,
+D70575,,
+D70576,,
+D70577,,
+D70578,,
+D70579,,
+D70580,,
+D70581,,
+D70582,,
+D70583,,
+D70584,,
+D70581,,
+D70582,,
+D70583,,
+D70584,,
+D70581,,
+D70582,,
+D70583,,
+D70581,,
+D70582,,
+D70583,,
+D70584,,
+D70581,,
+D70582,,
+D70581,,
+D70582,,
diff --git a/Doc/ILSOSConfig/ILSOS_PrismaticRD_PTOP/External/PLC/PLC_DeviceMap_Word_Output_D_Device.csv b/Doc/ILSOSConfig/ILSOS_PrismaticRD_PTOP/External/PLC/PLC_DeviceMap_Word_Output_D_Device.csv
new file mode 100644
index 0000000..39b6a2d
--- /dev/null
+++ b/Doc/ILSOSConfig/ILSOS_PrismaticRD_PTOP/External/PLC/PLC_DeviceMap_Word_Output_D_Device.csv
@@ -0,0 +1,101 @@
+Device No   ,   Comment ENG                     ,   Comment KOR
+D70000,PC_ErrorCode,PC_ErrorCode
+D70001,PC_Page No,PC_Page No
+D70002,PC_Recipe No,PC_Recipe No
+D70003,,
+D70004,,
+D70005,,
+D70006,,
+D70007,,
+D70008,,
+D70009,,
+D70010,,
+D70011,,
+D70012,,
+D70013,,
+D70014,,
+D70015,,
+D70016,,
+D70017,,
+D70018,,
+D70019,,
+D70020,,
+D70021,,
+D70022,,
+D70023,,
+D70024,,
+D70025,,
+D70026,,
+D70027,,
+D70028,,
+D70029,,
+D70030,,
+D70031,,
+D70032,,
+D70033,,
+D70034,,
+D70035,,
+D70036,,
+D70037,,
+D70038,,
+D70039,,
+D70040,,
+D70041,,
+D70042,,
+D70043,,
+D70044,,
+D70045,,
+D70046,,
+D70047,,
+D70048,,
+D70049,,
+D70050,,
+D70051,,
+D70052,,
+D70053,,
+D70054,,
+D70055,,
+D70056,,
+D70057,,
+D70058,,
+D70059,,
+D70060,,
+D70061,,
+D70062,,
+D70063,,
+D70064,,
+D70065,,
+D70066,,
+D70067,,
+D70068,,
+D70069,,
+D70070,,
+D70071,,
+D70072,,
+D70073,,
+D70074,,
+D70075,,
+D70076,,
+D70077,,
+D70078,,
+D70079,,
+D70080,,
+D70081,,
+D70082,,
+D70083,,
+D70084,,
+D70085,,
+D70086,,
+D70087,,
+D70088,,
+D70089,,
+D70090,,
+D70091,,
+D70092,,
+D70093,,
+D70094,,
+D70095,,
+D70096,,
+D70097,,
+D70098,,
+D70099,,
diff --git a/Machines/ILSOS_PrismaticRD_PTOP/Device/PLC/PLCController.Address.cs b/Machines/ILSOS_PrismaticRD_PTOP/Device/PLC/PLCController.Address.cs
index f4f51a8..55958fe 100644
--- a/Machines/ILSOS_PrismaticRD_PTOP/Device/PLC/PLCController.Address.cs
+++ b/Machines/ILSOS_PrismaticRD_PTOP/Device/PLC/PLCController.Address.cs
@@ -25,9 +25,9 @@ namespace ILSOS_PrismaticRD_PTOP.Device
             // 260618: M70509 Recipe 변경 요청 (구 PLC_RMS_USED, RMS 미사용으로 폐기 후 재정의)
             PLC_RECIPE_CHANGE_REQ = 0x09,
             // 0x0A ~ 0x0E
-            // 260621: M70515 bit15 모드전환 요청 (Recipe/Page 확인 팝업 → Auto→Manual 잠시 전환)
-            PLC_MODE_CHANGE = 0x0F,
-            PLC_WELD_READY_REQ = 0x10,
+            // 260621: M70515 확정 = Weld_01 Ready (가변용접 시 PLC ON → Recipe/Page 확인 팝업 + Resume 트리거)
+            PLC_WELD_READY_REQ = 0x0F,
+            PLC_WELD_TRIGGER_REQ = 0x10,   // M70516 (구 Ready)
             PLC_WELD_WAIT = 0x11,
             PLC_WELD_COMPLETE_ACK = 0x12,
             // 0x13 ~ 0x1D
@@ -43,9 +43,7 @@ namespace ILSOS_PrismaticRD_PTOP.Device
             PLC_DOOR_INTERLOCK_P = 0x6A,
             PLC_EMO_STATUS_P = 0x6B,
             // 0x6D
-            // 0x6F ~ 0x72
-            // 260621: M70615 bit15 모드전환 요청 (양극, 음극 PLC_MODE_CHANGE 0x0F 미러)
-            PLC_MODE_CHANGE_P = 0x73,
+            // 0x6F ~ 0x73
             PLC_WELD_P_READY_REQ = 0x74,
             PLC_WELD_P_WAIT = 0x75,
             PLC_WELD_P_COMP_ACK = 0x76,
@@ -65,9 +63,9 @@ namespace ILSOS_PrismaticRD_PTOP.Device
             // 260618: M70009 Recipe 변경 완료 응답 (구 PC_EMPTY01, 미사용 → 재정의)
             PC_RECIPE_CHANGE_COMPLETE = 0x09,
             // 0x0A ~ 0x0E
-            // 260621: M70015 bit15 모드전환 ACK (PC→PLC, #2 AutoRun 복귀 시 전달)
-            PC_MODE_CHANGE = 0x0F,
-            PC_WELD_READY_ACK = 0x10,
+            // 260621: M70015 확정 = Weld_01 ReadyACK (Resume ACK/run 신호)
+            PC_WELD_READY_ACK = 0x0F,
+            PC_WELD_TRIGGER_ACK = 0x10,    // M70016 (구 ReadyACK)
             PC_WELD_BUSY = 0x11,
             PC_WELD_COMPLETE = 0x12,
 
@@ -80,8 +78,6 @@ namespace ILSOS_PrismaticRD_PTOP.Device
             PC_LIGHT_ALARM_STATUS_P = 0x68,
             PC_HEAVY_ALARM_STATUS_P = 0x69,
 
-            // 260621: M70115 bit15 모드전환 ACK (양극, 음극 PC_MODE_CHANGE 0x0F 미러, #2 복귀 시 전달)
-            PC_MODE_CHANGE_P = 0x73,
             PC_WELD_P_READY_REQ = 0x74,
             PC_WELD_P_BUSY = 0x75,
             PC_WELD_P_COMP_ACK = 0x76,
diff --git a/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunComponentWeld.cs b/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunComponentWeld.cs
index 598636e..4efbc72 100644
--- a/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunComponentWeld.cs
+++ b/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunComponentWeld.cs
@@ -62,12 +62,12 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
 
         const string SEQ_ENTER = "SEQ_ENTER";   // inputParam 으로 받자.
         const string SEQ_CHECK_INIT_CONDITION = "Check Init Condition";  // Check Init Condition
-        const string SEQ_GET_PLC_WELD_READY_REQ_ON = "Get PLC Weld Ready Request On"; // PLC 용접 준비 요청 수신
+        const string SEQ_GET_PLC_WELD_TRIGGER_REQ_ON = "Get PLC Weld Ready Request On"; // PLC 용접 준비 요청 수신
         const string SEQ_CHECK_CELL_INFO_RECEIVE = "Check Cell Info Receive"; // 셀 정보 수신 확인
         const string SEQ_GET_PARAMS_RECEIVE_CELL_INFO_SEQ = "Get Sequence Result (ReceiveCellInfo Seq)";
         const string SEQ_DO_ID_RECEIVE_CELL_INFO_SEQ = "Process (ReceiveCellInfo Seq)";
         const string SEQ_SET_PARAMS_RECEIVE_CELL_INFO_SEQ = "Set Sequence Param (ReceiveCellInfo Seq)";
-        const string SEQ_SET_PC_WELD_READY_ACK_ON_WITH_CELL = "Set PC Weld Ready Ack On With Cell"; // 셀과 함께 PC 용접 준비 확인
+        const string SEQ_SET_PC_WELD_TRIGGER_ACK_ON_WITH_CELL = "Set PC Weld Ready Ack On With Cell"; // 셀과 함께 PC 용접 준비 확인
         const string SEQ_MEASURE_CELL_POSITION = "Measure Cell Position"; // 셀 위치 측정
         const string SEQ_SET_MIL_MODEL_FINDER_SEQ = "Set MIL Model Finder Seq"; // MIL 모델 찾기 시퀀스 설정
         const string SEQ_DO_ID_MIL_MODEL_FINDER_SEQ = "Process (MIL Model Finder Seq)"; // MIL 모델 찾기 시퀀스 처리
@@ -76,8 +76,8 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
         const string SEQ_SET_PARAMS_UPLOAD_WELDING_LIST_SEQ = "Set Params Upload Welding List Seq"; // 용접 리스트 업로드 파라미터 설정
         const string SEQ_DO_ID_UPLOAD_WELDING_LIST_SEQ = "Process (Upload Welding List Seq)"; // 용접 리스트 업로드 시퀀스 처리
         const string SEQ_GET_RESULT_UPLOAD_WELDING_LIST_SEQ = "Get Result Upload Welding List Seq"; // 용접 리스트 업로드 결과 가져오기
-        const string SEQ_GET_PLC_WELD_READY_REQ_OFF = "Get PLC Weld Ready Request Off"; // PLC 용접 준비 요청 종료
-        const string SEQ_SET_PC_WELD_READY_ACK_OFF = "Set PC Weld Ready Ack Off"; // PC 용접 준비 확인 종료
+        const string SEQ_GET_PLC_WELD_TRIGGER_REQ_OFF = "Get PLC Weld Ready Request Off"; // PLC 용접 준비 요청 종료
+        const string SEQ_SET_PC_WELD_TRIGGER_ACK_OFF = "Set PC Weld Ready Ack Off"; // PC 용접 준비 확인 종료
         const string SEQ_WAIT_WELDING_START = "Wait Welding Start"; // 용접 시작 대기
         const string SEQ_EXECUTE_WELDING = "Execute Welding"; // 용접 실행
         const string SEQ_CHECK_VISION_COMPENSION_USE = "Check Vision Compensation Use"; // 비전 보상 사용 확인
@@ -148,16 +148,16 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             sb.AddAction(SEQ_ENTER, Sequence_Enter);
             sb.AddDecision(SEQ_CHECK_INIT_CONDITION, CheckInitCondition); //분기
 
-            ////// PLC_WELD_READY_REQ ON Check & Cell Load
-            sb.AddAction(SEQ_GET_PLC_WELD_READY_REQ_ON, GetPlcWeldReadyReqOn);
+            ////// PLC_WELD_TRIGGER_REQ ON Check & Cell Load
+            sb.AddAction(SEQ_GET_PLC_WELD_TRIGGER_REQ_ON, GetPlcWeldReadyReqOn);
             sb.AddDecision(SEQ_CHECK_CELL_INFO_RECEIVE, CheckCellInfoReceive);
             sb.AddAction(SEQ_SET_PARAMS_RECEIVE_CELL_INFO_SEQ, SetReceiveCellInfo_SeqParams);
             sb.AddSubsequence(SEQ_DO_ID_RECEIVE_CELL_INFO_SEQ, SequenceManager.GetSeqBuilder_SeqReceiveCellInfo());
             sb.AddAction(SEQ_GET_PARAMS_RECEIVE_CELL_INFO_SEQ, GetReceiveCellInfo_SeqResult);
 
-            ////// PC_WELD_READY_ACK ON & PLC_WELD_READY_REQ OFF Check & Use Model Finder
-            sb.AddAction(SEQ_SET_PC_WELD_READY_ACK_ON_WITH_CELL, SetPcWeldReadyAckOnWithCell);
-            sb.AddAction(SEQ_GET_PLC_WELD_READY_REQ_OFF, GetPlcWeldReadyReqOff);
+            ////// PC_WELD_TRIGGER_ACK ON & PLC_WELD_TRIGGER_REQ OFF Check & Use Model Finder
+            sb.AddAction(SEQ_SET_PC_WELD_TRIGGER_ACK_ON_WITH_CELL, SetPcWeldReadyAckOnWithCell);
+            sb.AddAction(SEQ_GET_PLC_WELD_TRIGGER_REQ_OFF, GetPlcWeldReadyReqOff);
             sb.AddDecision(SEQ_CHECK_VISION_COMPENSION_USE, CheckVisionCompensationUse);
             sb.AddAction(SEQ_MEASURE_CELL_POSITION, MeasureCellPosition);
             sb.AddAction(SEQ_SET_MIL_MODEL_FINDER_SEQ, SetMilModelFinder_SeqParams);
@@ -166,8 +166,8 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             sb.AddAction(SEQ_GET_MIL_MODEL_FINDER_SEQ, GetMilModelFinder_SeqResult);
             sb.AddAction(SEQ_GENERATE_WELDING_OBJECT, GenerateWeldingObject);
 
-            ////// PC_WELD_READY_ACK OFF & Weld Start / Complete
-            sb.AddAction(SEQ_SET_PC_WELD_READY_ACK_OFF, SetPcWeldReadyAckOff);
+            ////// PC_WELD_TRIGGER_ACK OFF & Weld Start / Complete
+            sb.AddAction(SEQ_SET_PC_WELD_TRIGGER_ACK_OFF, SetPcWeldReadyAckOff);
             sb.AddAction(SEQ_SET_PARAMS_UPLOAD_WELDING_LIST_SEQ, SetUploadWeldingList_SeqParams);
             sb.AddSubsequence(SEQ_DO_ID_UPLOAD_WELDING_LIST_SEQ, CommonSequenceManager.GetSeqBuilder_SeqUploadWeldingList());
             sb.AddAction(SEQ_GET_RESULT_UPLOAD_WELDING_LIST_SEQ, GetUploadWeldingList_SeqResult);
@@ -189,12 +189,12 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
 
 
             sb.Flows(sb.Init > sb[SEQ_ENTER] > sb[SEQ_CHECK_INIT_CONDITION]
-                    > sb[SEQ_GET_PLC_WELD_READY_REQ_ON] > sb[SEQ_CHECK_CELL_INFO_RECEIVE]
+                    > sb[SEQ_GET_PLC_WELD_TRIGGER_REQ_ON] > sb[SEQ_CHECK_CELL_INFO_RECEIVE]
                     > sb[SEQ_SET_PARAMS_RECEIVE_CELL_INFO_SEQ] > sb[SEQ_DO_ID_RECEIVE_CELL_INFO_SEQ] > sb[SEQ_GET_PARAMS_RECEIVE_CELL_INFO_SEQ]
-                    > sb[SEQ_SET_PC_WELD_READY_ACK_ON_WITH_CELL] > sb[SEQ_GET_PLC_WELD_READY_REQ_OFF]
+                    > sb[SEQ_SET_PC_WELD_TRIGGER_ACK_ON_WITH_CELL] > sb[SEQ_GET_PLC_WELD_TRIGGER_REQ_OFF]
                     > sb[SEQ_CHECK_VISION_COMPENSION_USE] > sb[SEQ_MEASURE_CELL_POSITION]
                     > sb[SEQ_SET_MIL_MODEL_FINDER_SEQ] > sb[SEQ_DO_ID_MIL_MODEL_FINDER_SEQ] > sb[SEQ_GET_MIL_MODEL_FINDER_SEQ] > sb[SEQ_GENERATE_WELDING_OBJECT]
-                    > sb[SEQ_SET_PC_WELD_READY_ACK_OFF] > sb[SEQ_SET_PARAMS_UPLOAD_WELDING_LIST_SEQ] > sb[SEQ_DO_ID_UPLOAD_WELDING_LIST_SEQ] > sb[SEQ_GET_RESULT_UPLOAD_WELDING_LIST_SEQ]
+                    > sb[SEQ_SET_PC_WELD_TRIGGER_ACK_OFF] > sb[SEQ_SET_PARAMS_UPLOAD_WELDING_LIST_SEQ] > sb[SEQ_DO_ID_UPLOAD_WELDING_LIST_SEQ] > sb[SEQ_GET_RESULT_UPLOAD_WELDING_LIST_SEQ]
                     > sb[SEQ_WAIT_WELDING_START] > sb[SEQ_EXECUTE_WELDING]
                     > sb[SEQ_SET_PC_WELD_COMPLETE_ON] > sb[SEQ_CHECK_PLC_WELDING_COMPLETE]
                     > sb[SEQ_SET_PC_WELD_COMPLETE_OFF_WITH_END] > sb[SEQ_GET_PLC_WELD_COMPLETE_ACK_OFF] > sb[SEQ_SAVE_RESULT_DATA] > sb[SEQ_COMPLETE]);
@@ -203,10 +203,10 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             sb.Flows(sb[SEQ_CHECK_INIT_CONDITION] > sb[SEQ_COMPLETE] > sb.Final);
 
             // SEQ_CHECK_CELL_INFO_RECEIVE
-            sb.Flows(sb[SEQ_CHECK_CELL_INFO_RECEIVE] > sb[SEQ_SET_PC_WELD_READY_ACK_ON_WITH_CELL]);
+            sb.Flows(sb[SEQ_CHECK_CELL_INFO_RECEIVE] > sb[SEQ_SET_PC_WELD_TRIGGER_ACK_ON_WITH_CELL]);
 
             // SEQ_CHECK_VISION_COMPENSION_USE
-            sb.Flows(sb[SEQ_CHECK_VISION_COMPENSION_USE] > sb[SEQ_SET_PC_WELD_READY_ACK_OFF]);
+            sb.Flows(sb[SEQ_CHECK_VISION_COMPENSION_USE] > sb[SEQ_SET_PC_WELD_TRIGGER_ACK_OFF]);
 
             // SEQ_CHECK_PLC_WELDING_COMPLETE
             sb.Flows(sb[SEQ_CHECK_PLC_WELDING_COMPLETE] > sb[SEQ_SET_PC_WELD_COMPLETE_OFF_WITH_RETRY]
@@ -266,7 +266,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             // while context가 적절한지 고민이 됨.
             while (!context.Stopped)
             {
-                if (_PLC.ReadBit(eBitInput.PLC_WELD_READY_REQ).data){
+                if (_PLC.ReadBit(eBitInput.PLC_WELD_TRIGGER_REQ).data){
                     Log.I(string.Format("PLC Weld Ready Request ON"));
                     break;
                 }
@@ -284,7 +284,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             else
             {
                 Log.I(string.Format("Pass Cell Info Receive"));
-                return SEQ_SET_PC_WELD_READY_ACK_ON_WITH_CELL;
+                return SEQ_SET_PC_WELD_TRIGGER_ACK_ON_WITH_CELL;
             }
         }
 
@@ -309,7 +309,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
 
         private SequenceActionResult SetPcWeldReadyAckOnWithCell(SequenceContext context, string id, SequenceActionResult param)
         {
-            _PLC.WriteBit(eBitOutput.PC_WELD_READY_ACK, true);
+            _PLC.WriteBit(eBitOutput.PC_WELD_TRIGGER_ACK, true);
             // Cell ID를 PLC에 적어줄지 고민해볼 것.
 
             Log.I(string.Format("Set PC Weld Ready Ack On With Cell"));
@@ -320,7 +320,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
         private SequenceActionResult GetPlcWeldReadyReqOff(SequenceContext context, string id, SequenceActionResult param)
         {
             // Retry에 대해서 어떤 부분이 좋을지 고민됨.. while(!context.Stopped) or RetryUntilSuccess
-            Func<bool> plcResponse = () => _PLC.ReadBit(eBitInput.PLC_WELD_READY_REQ).data;
+            Func<bool> plcResponse = () => _PLC.ReadBit(eBitInput.PLC_WELD_TRIGGER_REQ).data;
 
             var res = context.RetryUntilSuccess(plcResponse, timeoutSeconds * 1000);
             if (res == E2.TIMEOUT)
@@ -343,7 +343,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             else
             {
                 Log.I(string.Format("Unuse Vision Compensation"));
-                return SEQ_SET_PC_WELD_READY_ACK_OFF;
+                return SEQ_SET_PC_WELD_TRIGGER_ACK_OFF;
             }
         }
         private SequenceActionResult MeasureCellPosition(SequenceContext context, string id, SequenceActionResult param)
@@ -374,7 +374,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
 
         private SequenceActionResult SetPcWeldReadyAckOff(SequenceContext context, string id, SequenceActionResult param)
         {
-            _PLC.WriteBit(eBitOutput.PC_WELD_READY_ACK, false);
+            _PLC.WriteBit(eBitOutput.PC_WELD_TRIGGER_ACK, false);
             Log.I(string.Format("Set PC Weld Ready Ack Off"));
 
             return SequenceAction.Ok();
diff --git a/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunPTOP.cs b/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunPTOP.cs
index a0ba7c3..554dc58 100644
--- a/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunPTOP.cs
+++ b/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunPTOP.cs
@@ -39,7 +39,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
     [CheckPageNo] PLC_PAGE_CHANGE_REQ ON 감지 → CheckPageNoComp 이동
     [CheckPageNoComp] 페이지 확정 - PC_PAGE_NO: [1] 에코 완료
     [SetUploadWeldingList] Group Count: [2], Total Line Count: [34]
-    [WeldingStartReadBit] PLC_WELD_READY_REQ ON 감지 → WaitWeldingStart 이동
+    [WeldingStartReadBit] PLC_WELD_TRIGGER_REQ ON 감지 → WaitWeldingStart 이동
     [WaitWeldingStart] READY_ACK/BUSY ON, COMPLETE OFF 완료
     [ExecuteWelding] Laser Gate ON (Core+Ring)
     [ExecuteWelding] Gate ON Delay 15ms 완료 → ExecuteList 시작
@@ -605,7 +605,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
         // 260513 추가노드
         private SequenceActionResult WeldingStartReadBit(SequenceContext context, string id, SequenceActionResult param)
         {
-            Log.I($"---> [WeldingStartReadBit] PLC_WELD_READY_REQ 신호 대기 중... ");
+            Log.I($"---> [WeldingStartReadBit] PLC_WELD_TRIGGER_REQ 신호 대기 중... ");
             // 1. PLC 용접 요청 대기
 
             var interfaceStartTime = DateTime.Now;
@@ -617,26 +617,26 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
                     return null;
                 }
 
-                if (_PLC.ReadBit(eBitInput.PLC_WELD_READY_REQ).data)
+                if (_PLC.ReadBit(eBitInput.PLC_WELD_TRIGGER_REQ).data)
                 {
-                    Log.I($"[WeldingStartReadBit] Check OK -> PLC_WELD_READY_REQ : ON");
+                    Log.I($"[WeldingStartReadBit] Check OK -> PLC_WELD_TRIGGER_REQ : ON");
 
                     // 디버그 끝내고 삭제
-                    MessageUtil.ShowToast("PLC_WELD_READY_REQ : ON");
+                    MessageUtil.ShowToast("PLC_WELD_TRIGGER_REQ : ON");
                     //Thread.Sleep(1000);
 
                     break;
                 }
                 if (DateTime.Now.Subtract(interfaceStartTime).TotalSeconds > PLC_TIMEOUT)
                 {
-                    Log.W($"[WeldingStartReadBit] PLC_WELD_READY_REQ -> TIMEOUT...");
+                    Log.W($"[WeldingStartReadBit] PLC_WELD_TRIGGER_REQ -> TIMEOUT...");
                     interfaceStartTime = DateTime.Now;
                 }
                 Thread.Sleep(10);
             }
 
 
-            Log.I($"---> [WeldingStartReadBit] PLC_WELD_READY_REQ ON 감지 → WaitWeldingStart 이동");
+            Log.I($"---> [WeldingStartReadBit] PLC_WELD_TRIGGER_REQ ON 감지 → WaitWeldingStart 이동");
 
 
             return SequenceAction.Ok();
@@ -651,7 +651,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             if (plcPageNo == 1)
             {
                 // 2. 준비 완료(Ack) 및 가동 중(Busy) 비트 ON 
-                _PLC.WriteBit((int)eBitOutput.PC_WELD_READY_ACK, true);
+                _PLC.WriteBit((int)eBitOutput.PC_WELD_TRIGGER_ACK, true);
                 _PLC.WriteBit((int)eBitOutput.PC_WELD_BUSY, true);
                 Thread.Sleep(200);
                 _PLC.WriteBit((int)eBitOutput.PC_WELD_COMPLETE, false);
@@ -792,7 +792,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             if (plcPageNo == 1)
             {
                 // 용접끝 
-                _PLC.WriteBit((int)eBitOutput.PC_WELD_READY_ACK, false);
+                _PLC.WriteBit((int)eBitOutput.PC_WELD_TRIGGER_ACK, false);
                 Log.I("[PLCInterface] PageNo[1] READY_ACK false");
                 Thread.Sleep(5);
                 // 용접중 신호로 변경 
@@ -837,10 +837,9 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             // 260621: Resume 사이클 1회 완료 → 출력 bit15 OFF + ResumeMode 해제 (이후 정상 루프 복귀)
             if (ResumeMode)
             {
-                _PLC.WriteBit((int)eBitOutput.PC_MODE_CHANGE, false);
-                _PLC.WriteBit((int)eBitOutput.PC_MODE_CHANGE_P, false);
+                _PLC.WriteBit((int)eBitOutput.PC_WELD_READY_ACK, false);
                 ResumeMode = false;
-                Log.I("[CheckCycleStop] Resume 사이클 완료 → PC_MODE_CHANGE OFF, ResumeMode 해제");
+                Log.I("[CheckCycleStop] Resume 사이클 완료 → PC_WELD_READY_ACK OFF, ResumeMode 해제");
             }
 
             Log.I($"[CheckCycleStop] 사이클 계속 진행 → CheckPageNo 이동");
@@ -939,7 +938,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             ////PLC All BIT OFF
             _PLC.WriteBit((int)eCommonBitOutput.PC_PAGE_CHANGE_COMPLETE, false);          // 페이지 false
 
-            _PLC.WriteBit((int)eCommonBitOutput.PC_WELD_READY_ACK, false);          // 용접 준비 false 
+            _PLC.WriteBit((int)eCommonBitOutput.PC_WELD_TRIGGER_ACK, false);          // 용접 준비 false 
             _PLC.WriteBit((int)eCommonBitOutput.PC_WELD_BUSY, false);               // 동작 중 false
             _PLC.WriteBit((int)eCommonBitOutput.PC_WELD_COMPLETE, false);           // 용접 완료 false 
             Log.I(string.Format("[PLCInterface]PC Anod Bit Off"));
@@ -1053,8 +1052,8 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
         {
             Log.I($"[InitAutoRunBit] 노드 Start");
             Log.I(string.Format($"[PLCInterface] Start AutoRun PLC Bit Initialize"));
-            _PLC.WriteBit((int)eBitOutput.PC_WELD_READY_ACK, false);
-            Log.I(string.Format($"[PLCInterface]SET (-)PC_WELD_READY_ACK False"));
+            _PLC.WriteBit((int)eBitOutput.PC_WELD_TRIGGER_ACK, false);
+            Log.I(string.Format($"[PLCInterface]SET (-)PC_WELD_TRIGGER_ACK False"));
             _PLC.WriteBit((int)eBitOutput.PC_WELD_BUSY, false);
             Log.I(string.Format($"[PLCInterface]SET (-)PC_WELD_BUSY False"));
             _PLC.WriteBit((int)eBitOutput.PC_WELD_COMPLETE, false);
@@ -1064,7 +1063,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
 
             Log.I(string.Format($"[PLCInterface] Start AutoRun PLC Bit Initialize"));
             _PLC.WriteBit((int)eBitOutput.PC_WELD_P_READY_REQ, false);
-            Log.I(string.Format($"[PLCInterface]SET (+)PC_WELD_READY_ACK False"));
+            Log.I(string.Format($"[PLCInterface]SET (+)PC_WELD_TRIGGER_ACK False"));
             _PLC.WriteBit((int)eBitOutput.PC_WELD_P_BUSY, false);
             Log.I(string.Format($"[PLCInterface]SET (+)PC_WELD_BUSY False"));
             _PLC.WriteBit((int)eBitOutput.PC_WELD_P_COMP_ACK, false);
@@ -1098,7 +1097,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             Log.I($"[OnSeqActionStop] 시퀀스 강제 중지 - PLC/IO/Scanner 초기화 시작");
             // PLC All BIT OFF
             _PLC.WriteBit((int)eBitOutput.PC_AUTO_STATUS, false);
-            _PLC.WriteBit((int)eBitOutput.PC_WELD_READY_ACK, false);
+            _PLC.WriteBit((int)eBitOutput.PC_WELD_TRIGGER_ACK, false);
             _PLC.WriteBit((int)eBitOutput.PC_WELD_BUSY, false);
             _PLC.WriteBit((int)eBitOutput.PC_WELD_COMPLETE, false);
             Log.I("[OnSeqActionStop] PLC ANODE(-) Output All false");
diff --git a/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunPrismatic.cs b/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunPrismatic.cs
index ce8d584..f9bf7ae 100644
--- a/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunPrismatic.cs
+++ b/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunPrismatic.cs
@@ -388,7 +388,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
         private SequenceActionResult SetPlcPageChangeOrWeldRequest_SeqParams(SequenceContext context, string id, SequenceActionResult param)
         {
             Log.I(string.Format("PLC Interface(PageChange, WeldReq) Start; (REQ,ACK); ({0},{1});({2},{3})",
-                (int)eBitInput.PLC_PAGE_CHANGE_REQ, (int)eBitOutput.PC_PAGE_CHANGE_COMPLETE, (int)eBitInput.PLC_WELD_READY_REQ, (int)eBitOutput.PC_WELD_READY_ACK));
+                (int)eBitInput.PLC_PAGE_CHANGE_REQ, (int)eBitOutput.PC_PAGE_CHANGE_COMPLETE, (int)eBitInput.PLC_WELD_TRIGGER_REQ, (int)eBitOutput.PC_WELD_TRIGGER_ACK));
 
             Status.SetWorkingPosition(eWorkingPosition.LOADING_CELL);
 
@@ -461,12 +461,12 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
         #region 3. 용접 요청 인터페이스 (PLC <-> PC)
         private SequenceActionResult SetPlcWeldRequest_SeqParams(SequenceContext context, string id, SequenceActionResult param)
         {
-            Log.I(string.Format("Test1; REQ: {0}; ACK: {1}", (int)eBitInput.PLC_WELD_READY_REQ, (int)eBitOutput.PC_WELD_READY_ACK));
+            Log.I(string.Format("Test1; REQ: {0}; ACK: {1}", (int)eBitInput.PLC_WELD_TRIGGER_REQ, (int)eBitOutput.PC_WELD_TRIGGER_ACK));
 
             // PLC 인터페이스 전까지 테스트
             SeqExecutePlcBitInterface_InitParam seqParams = new SeqExecutePlcBitInterface_InitParam() {
-                GetAddress = eCommonBitInput.PLC_WELD_READY_REQ,
-                SetAddress = eCommonBitOutput.PC_WELD_READY_ACK,
+                GetAddress = eCommonBitInput.PLC_WELD_TRIGGER_REQ,
+                SetAddress = eCommonBitOutput.PC_WELD_TRIGGER_ACK,
                 TimeoutSec = 60,
                 FirstTimeoutSec = 6 * 60 * 60, // 2시간동안 대기,
                 IsSetMode = false
@@ -1279,7 +1279,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             // 초기화 
             _PLC.WriteBit(eBitOutput.PC_PAGE_CHANGE_COMPLETE, false);
 
-            _PLC.WriteBit(eBitOutput.PC_WELD_READY_ACK, false);
+            _PLC.WriteBit(eBitOutput.PC_WELD_TRIGGER_ACK, false);
             _PLC.WriteBit(eBitOutput.PC_WELD_BUSY, false);
             _PLC.WriteBit(eBitOutput.PC_WELD_COMPLETE, false);
 
diff --git a/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqTestRun.cs b/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqTestRun.cs
index 6bdf2b7..25f8bb4 100644
--- a/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqTestRun.cs
+++ b/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqTestRun.cs
@@ -164,11 +164,11 @@ namespace ILSOS_PrismaticRD_TDC.Sequences
 
             while (!context.Stopped)
             {
-                if (_PLC.ReadBit((int)eBitInput.PLC_WELD_READY_REQ).data)
+                if (_PLC.ReadBit((int)eBitInput.PLC_WELD_TRIGGER_REQ).data)
                 {
-                    Log.I(string.Format($"[PLCInterface]GET PLC_WELD_READY_REQ True"));
-                    _PLC.WriteBit((int)eBitOutput.PC_WELD_READY_ACK, true);
-                    Log.I(string.Format($"[PLCInterface]SET PC_WELD_READY_ACK True"));
+                    Log.I(string.Format($"[PLCInterface]GET PLC_WELD_TRIGGER_REQ True"));
+                    _PLC.WriteBit((int)eBitOutput.PC_WELD_TRIGGER_ACK, true);
+                    Log.I(string.Format($"[PLCInterface]SET PC_WELD_TRIGGER_ACK True"));
 
                     break;
                 }
@@ -176,7 +176,7 @@ namespace ILSOS_PrismaticRD_TDC.Sequences
                 _InterfaceSpanTime = DateTime.Now.Subtract(_InterfaceStartTime);
                 if (_InterfaceSpanTime.TotalMilliseconds > (PLC_TIMEOUT * 1000))
                 {
-                    Log.E("TIMEOUT_PLC_WELD_READY_REQEUST");
+                    Log.E("TIMEOUT_PLC_WELD_TRIGGER_REQEUST");
                     _InterfaceStartTime = DateTime.Now;
                 }
                 Thread.Sleep(10);
@@ -356,7 +356,7 @@ namespace ILSOS_PrismaticRD_TDC.Sequences
             Log.I("[SeqTestRun]GetPLCWeldRequestOn");
             WeldReqTime = DateTime.Now;
 
-            context.RetryUntilSuccess(() => _PLC.ReadBit(eCommonBitInput.PLC_WELD_READY_REQ).data, _InitParam.TimeoutSec * 1000, interval: 10);
+            context.RetryUntilSuccess(() => _PLC.ReadBit(eCommonBitInput.PLC_WELD_TRIGGER_REQ).data, _InitParam.TimeoutSec * 1000, interval: 10);
 
             Log.W(string.Format("Get PLC Weld Request On"));
 
@@ -398,7 +398,7 @@ namespace ILSOS_PrismaticRD_TDC.Sequences
 
             if()
 
-            _PLC.WriteBit((int)eBitOutput.PC_WELD_READY_ACK, false);
+            _PLC.WriteBit((int)eBitOutput.PC_WELD_TRIGGER_ACK, false);
             Log.I(string.Format($"[PLCInterface]SET PC_WELD_REQEUST_ACK False"));
             _PLC.WriteBit((int)eBitOutput.PC_WELD_BUSY, true);
             Log.I(string.Format($"[PLCInterface]SET PC_WELD_BUSY False"));
@@ -444,7 +444,7 @@ namespace ILSOS_PrismaticRD_TDC.Sequences
         private bool CheckRequest()
         {
             pageChangeRequestBit = _PLC.ReadBit(eCommonBitInput.PLC_PAGE_CHANGE_REQ).data;
-            weldRequestBit = _PLC.ReadBit(eCommonBitInput.PLC_WELD_READY_REQ).data;
+            weldRequestBit = _PLC.ReadBit(eCommonBitInput.PLC_WELD_TRIGGER_REQ).data;
             return (pageChangeRequestBit || weldRequestBit);
         }
 
diff --git a/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqWaitWeldOrChangePage.cs b/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqWaitWeldOrChangePage.cs
index e211437..ffdb24f 100644
--- a/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqWaitWeldOrChangePage.cs
+++ b/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqWaitWeldOrChangePage.cs
@@ -326,7 +326,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
         {
             WeldReqTime = DateTime.Now;
 
-            context.RetryUntilSuccess(() => _PLC.ReadBit(eCommonBitInput.PLC_WELD_READY_REQ).data, _InitParam.TimeoutSec * 1000, interval: 10);
+            context.RetryUntilSuccess(() => _PLC.ReadBit(eCommonBitInput.PLC_WELD_TRIGGER_REQ).data, _InitParam.TimeoutSec * 1000, interval: 10);
 
             Log.W(string.Format("Get PLC Weld Request On"));
 
@@ -364,7 +364,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
         private bool CheckRequest()
         {
             pageChangeRequestBit = _PLC.ReadBit(eCommonBitInput.PLC_PAGE_CHANGE_REQ).data;
-            weldRequestBit = _PLC.ReadBit(eCommonBitInput.PLC_WELD_READY_REQ).data;
+            weldRequestBit = _PLC.ReadBit(eCommonBitInput.PLC_WELD_TRIGGER_REQ).data;
             return (pageChangeRequestBit || weldRequestBit);
         }
 
diff --git a/Machines/ILSOS_PrismaticRD_PTOP/Views/Main/UCMainAutoRunViewModel.cs b/Machines/ILSOS_PrismaticRD_PTOP/Views/Main/UCMainAutoRunViewModel.cs
index c84a52c..9aebcf6 100644
--- a/Machines/ILSOS_PrismaticRD_PTOP/Views/Main/UCMainAutoRunViewModel.cs
+++ b/Machines/ILSOS_PrismaticRD_PTOP/Views/Main/UCMainAutoRunViewModel.cs
@@ -206,8 +206,7 @@ namespace ILSOS_PrismaticRD_PTOP.Views
             // 260621: PLC bit15(MODECHANGE) 상승엣지 → Recipe/Page 확인 팝업 → Auto→Manual 잠시 전환
             if (_Plc == null || _Plc.IsSimul) return;
             // 음극/양극 어느 쪽이 줘도 트리거 (AutoRun이 두 극을 함께 쓰는 구조와 동일)
-            bool bit15 = _Plc.ReadBit(eBitInput.PLC_MODE_CHANGE).data
-                      || _Plc.ReadBit(eBitInput.PLC_MODE_CHANGE_P).data;
+            bool bit15 = _Plc.ReadBit(eBitInput.PLC_WELD_READY_REQ).data;
             IsModeChangeActive = bit15;   // bit15 살아있을 때만 [AutoRun Resume] 버튼 표시
             if (bit15 && !_prevBit15 && !_isPopupOpen)
             {
@@ -253,15 +252,14 @@ namespace ILSOS_PrismaticRD_PTOP.Views
                 MessageUtil.ShowWarningToast("Resume 상태가 아닙니다.");
                 return;
             }
-            // PC→PLC bit15(MODECHANGE) ON — resume run 신호 (한 사이클 완료 후 시퀀스가 OFF/해제)
-            _Plc.WriteBit(eBitOutput.PC_MODE_CHANGE, true);
-            _Plc.WriteBit(eBitOutput.PC_MODE_CHANGE_P, true);
+            // PC→PLC bit15(Weld_01 ReadyACK) ON — resume run 신호 (한 사이클 완료 후 시퀀스가 OFF/해제)
+            _Plc.WriteBit(eBitOutput.PC_WELD_READY_ACK, true);
             // Auto 복귀 (ResumeMode=true → CheckInitCondition에서 핸드셰이크 스킵하고 업로드→용접)
             _Plc.WriteBit(eBitOutput.PC_AUTO_STATUS, true);
             _Plc.WriteBit(eBitOutput.PC_AUTO_STATUS_P, true);
             Status.GetProcessingWeldingData().AutoRunStartTime = DateTime.Now;
             RunSequenceAutoRun();
-            Log.I("[Bit15] AutoRun Resume → PC_MODE_CHANGE ON + Auto 이어하기(핸드셰이크 스킵)");
+            Log.I("[Bit15] AutoRun Resume → PC_WELD_READY_ACK ON + Auto 이어하기(핸드셰이크 스킵)");
         }
 
         // PLC 비트에 의한 AutoRun 실행의 경우, PLC 인터페이스 이후 AutoRun 필요
diff --git a/WeldingComponents/WeldingCommon/Devices/PLC/PLCController.Address.cs b/WeldingComponents/WeldingCommon/Devices/PLC/PLCController.Address.cs
index 90fac33..1d22fdb 100644
--- a/WeldingComponents/WeldingCommon/Devices/PLC/PLCController.Address.cs
+++ b/WeldingComponents/WeldingCommon/Devices/PLC/PLCController.Address.cs
@@ -230,8 +230,9 @@ namespace WeldingCommon.Devices
             PLC_PAGE_CHANGE_REQ = 0x08,
 
             PLC_RMS_USED = 0x09,
-            // 0x0A ~ 0x0F
-            PLC_WELD_READY_REQ = 0x10,
+            // 0x0A ~ 0x0E
+            PLC_WELD_READY_REQ = 0x0F,     // 260621: Weld_01 Ready (PTOP 동기화)
+            PLC_WELD_TRIGGER_REQ = 0x10,
             PLC_WELD_WAIT = 0x11,
             PLC_WELD_COMPLETE_ACK = 0x12,
             // 0x13 ~ 0x1D
@@ -266,8 +267,9 @@ namespace WeldingCommon.Devices
             PC_EMO_STATUS = 0x07,
             PC_PAGE_CHANGE_COMPLETE = 0x08,
             PC_RECIPE_CHANGE_COMPLETE = 0x09,   // 260618: PTOP enum과 동기화 (RestoreDeviceStatus가 common enum 사용)
-            // 0x0A ~ 0x0F
-            PC_WELD_READY_ACK = 0x10,
+            // 0x0A ~ 0x0E
+            PC_WELD_READY_ACK = 0x0F,      // 260621: Weld_01 ReadyACK (PTOP 동기화)
+            PC_WELD_TRIGGER_ACK = 0x10,
             PC_WELD_BUSY = 0x11,
             PC_WELD_COMPLETE = 0x12,
 
diff --git a/docs/작업일지/2026_06_21.md b/docs/작업일지/2026_06_21.md
index 53da338..1de5707 100644
--- a/docs/작업일지/2026_06_21.md
+++ b/docs/작업일지/2026_06_21.md
@@ -29,7 +29,7 @@
 
 보완항목 확정: 1=작업지시서, 2=(나)작업자 수동 RunWelding, 3=작업지시서, 4=작업지시서, 5=현행유지.
 
-- **bit 정의**: 입력 `PLC_MODE_CHANGE=0x0F(M70515)`/`_P=0x73(M70615)`, 출력 `PC_MODE_CHANGE=0x0F(M70015)`/`_P=0x73(M70115)`.
+- **bit 정의** (※ 현장 확정맵 반영해 명칭 정정 — 아래 6장 참고): bit15(0x0F) = **Weld_01 Ready** (`PLC_WELD_READY_REQ`/`PC_WELD_READY_ACK`, M70515/M70015). 가변용접 시 PLC가 ON → 확인 팝업 + Resume 트리거 겸용. (임시명 `MODE_CHANGE`였음)
 - **정지 보존(#1)**: `OnSeqActionStop`에서 `ResumeMode`면 `PC_PAGE_NO/RECIPE_NO=0` 쓰기 스킵(에코 보존).
 - **확인 핸들러(#2-나)**: `ResumeMode=true`→Stop(보존)→팝업(`MessageDialog.Show` OK-only)→Manual 전환. 레시피 이미 활성이라 재활성/롤백 안 함. 가변 용접은 작업자가 Manual에서 직접.
 - **핸드셰이크 스킵(#3)**: `CheckInitCondition`에서 `ResumeMode`면 `SEQ_SET_PARAMS_UPLOAD_WELDING_LIST_SEQ`로 분기(+Flow 엣지).
@@ -38,14 +38,24 @@
 - 버튼 **[AutoRun Resume]** = Equipment Status 그룹 좌측, `IsModeChangeActive`(bit15 ON) 때만 표시. 확인창 없이 즉시 재개.
 - 재용접 중복은 **PLC가 레이저 차단**으로 합의(option2).
 
-## 5. 미확정 / 확인 필요 (다음 액션)
+## 6. 현장 확정 PLC DeviceMap 반영 — bit15 명칭/용접비트 정정 (빌드 0오류)
 
-- **현장 실증 전** — 빌드만 통과. bit15 흐름·레시피 전환·실제 Laser 발진은 현장 테스트 필요.
+현장 확정 CSV(`Doc/ILSOSConfig/.../External/PLC/PLC_DeviceMap_*_M/D_Device.csv`) 확인 결과, 임시명 `MODE_CHANGE`로 잡았던 bit15가 **Weld_01 Ready로 확정**됨. 또 원래 Ready(0x10)는 **Trigger**로 밀림. 전 파일 일괄 정정.
+
+- 0x0F (M70515/M70015): `MODE_CHANGE` → **`WELD_READY_REQ`/`WELD_READY_ACK`** (Weld_01 Ready, Resume 트리거 겸용)
+- 0x10 (M70516/M70016): 기존 `WELD_READY_REQ`/`ACK` → **`WELD_TRIGGER_REQ`/`ACK`** (원래 Ready, 용접 발진 신호)
+- **주소(0x0F/0x10) 불변 = 런타임 동작 동일**, 심볼 이름만 정정. 단 양극 `_P`(0x73) 미러는 제거(현장 단일블록).
+- 수정 범위: 공통 enum(`WeldingCommon/.../PLCController.Address.cs`) + PTOP enum + 시퀀스 5종(SeqAutoRunPTOP/ComponentWeld/Prismatic/TestRun/WaitWeldOrChangePage) + `UCMainAutoRunViewModel`. 타 머신 영향 없음(심볼 미참조 확인).
+- 레시피 번호도 변경됨: **21 전면Pre / 22 후면Pre / 23 전면 / 24 후면** (20 폐지). 코드는 데이터구동이라 영향 없음.
+
+## 7. 미확정 / 확인 필요 (다음 액션)
+
+- **현장 실증 전** — 빌드만 통과. bit15(Weld Ready) 흐름·레시피 전환·실제 Laser 발진은 현장 테스트 필요.
 - **PLC 협의**:
-  - 출력 `PC_MODE_CHANGE`(bit15) false 처리 위치 — 현재 `CheckCycleStop`. 대안: 다음 `PAGE_CHANGE_REQ` 수신 블록에서 false (PLC 인식 타이밍과 합의 후 확정).
-  - bit15 주소(M70515/M70615/M70015/M70115) 실맵 대조.
-  - bit15 발생 정책: 가변 페이지마다 vs 가변 레시피당 1회.
+  - 출력 `PC_WELD_READY_ACK`(bit15) false 처리 위치 — 현재 `CheckCycleStop`. 대안: 다음 `PAGE_CHANGE_REQ` 수신 블록에서 false (CSV 노트 "15bit page change 때 init 0"과 정합 — 위치 확정 필요).
+  - bit15 발생 정책: CSV 노트상 **레시피 21·22(가변) 시 PLC가 ON** → 가변 페이지마다인지 레시피당 1회인지 세부 확인.
+  - 용접 핸드셰이크 Ready(0x0F)→Trigger(0x10) 2단계 프로토콜 — 기존 용접시작 로직 현장 동작 확인.
 - 레시피 시트 "Pre **가변**" 표기가 PRE **가접** 오타인지 확인.
-- 20~23 페이지 수 미확정(코드는 `Layers.Count()` 가변 대응).
+- 21~24 페이지 수 미확정(코드는 `Layers.Count()` 가변 대응).
 - 알람 타이밍: `device.Activate()`가 연결완료까지 동기인지/개시만인지 디바이스별 확인.
 - 제품 1개 = Recipe×Page 사이클 예상 시나리오: `docs/분석/2026/06/21/121750_제품1개_recipe_page_사이클_예상시나리오.md`.