虚拟模式下 跳过联锁（Interlock）检查，因为虚拟模式没有真实安全门信

XP.Hardware.MotionControl/Services/MotionControlService.cs

@@ -11,6 +11,7 @@ using XP.Hardware.MotionControl.Abstractions;
 using XP.Hardware.MotionControl.Abstractions.Enums;
 using XP.Hardware.MotionControl.Abstractions.Events;
 using XP.Hardware.MotionControl.Config;
+using XP.Hardware.MotionControl.Implementations;
 using XP.Hardware.Plc.Abstractions;
 
 namespace XP.Hardware.MotionControl.Services
@@ -105,8 +106,11 @@ namespace XP.Hardware.MotionControl.Services
         /// </summary>
         private void OnPollingTick(object state)
         {
-            // PLC 未连接时跳过轮询 | Skip polling when PLC is not connected
-            if (!_plcService.IsConnected) return;
+            // 虚拟运动系统不依赖 PLC 连接 | Simulated motion system does not depend on PLC connection
+            bool isSimulated = _motionSystem is SimulatedMotionSystem;
+
+            // PLC 未连接时跳过轮询（虚拟模式除外）| Skip polling when PLC is not connected (except simulated mode)
+            if (!isSimulated && !_plcService.IsConnected) return;
 
             // 连续错误过多时降频：每50次轮询才尝试一次 | Throttle when too many consecutive errors
             if (_pollErrorCount > 3)