diff --git a/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunPTOP.cs b/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunPTOP.cs
index ef4fd9c..4943eaa 100644
--- a/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunPTOP.cs
+++ b/Machines/ILSOS_PrismaticRD_PTOP/Sequences/SeqAutoRunPTOP.cs
@@ -920,11 +920,16 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
             };
         }
 
-        // Scout Complete 비트(PC→PLC) 기록
-        private void WriteScoutCompleteBit(eBitOutput completeBit, bool on, string phase)
+        // Scout Complete 비트(PC→PLC) 고정 펄스: ON → SCOUT_COMPLETE_PULSE_MS 유지 → OFF.
+        //  (CheckCycleStop이 항상 CheckPageNo로 루프백 → WriteCompletionPLCBit 미도달이므로 여기서 직접 OFF까지 처리)
+        private const int SCOUT_COMPLETE_PULSE_MS = 400;
+        private void PulseScoutCompleteBit(eBitOutput completeBit, string phase)
         {
-            _PLC.WriteBit((int)completeBit, on);
-            Log.I($"[{phase}Scout] {completeBit} = {on}");
+            _PLC.WriteBit((int)completeBit, true);
+            Log.I($"[{phase}Scout] {completeBit} = true (펄스 {SCOUT_COMPLETE_PULSE_MS}ms)");
+            Thread.Sleep(SCOUT_COMPLETE_PULSE_MS);
+            _PLC.WriteBit((int)completeBit, false);
+            Log.I($"[{phase}Scout] {completeBit} = false (펄스 종료)");
         }
 
         // ── 용접 전 Scout ───────────────────────────────────────────
@@ -948,7 +953,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
                 Log.E("[PreScout] Scout 실패 → 시퀀스 중단");
                 return null;
             }
-            WriteScoutCompleteBit(eBitOutput.PC_PRE_WELD_SCOUT_COMPLETE, true, "Pre");
+            PulseScoutCompleteBit(eBitOutput.PC_PRE_WELD_SCOUT_COMPLETE, "Pre");
             Log.I("[PreScout] 완료 → UploadWeldingList 이동");
             return SequenceAction.Ok();
         }
@@ -973,7 +978,7 @@ namespace ILSOS_PrismaticRD_PTOP.Sequences
                 Log.E("[PostScout] Scout 실패 → 시퀀스 중단");
                 return null;
             }
-            WriteScoutCompleteBit(eBitOutput.PC_POST_WELD_SCOUT_COMPLETE, true, "Post");
+            PulseScoutCompleteBit(eBitOutput.PC_POST_WELD_SCOUT_COMPLETE, "Post");
             Log.I("[PostScout] 완료 → CheckCycleStop 이동");
             return SequenceAction.Ok();
         }