diff --git a/component/iscs_fg.go b/component/iscs_fg.go
new file mode 100644
index 0000000..3043e15
--- /dev/null
+++ b/component/iscs_fg.go
@@ -0,0 +1,15 @@
+package component
+
+// FloodGate 防淹门
+type FloodGate struct {
+	State FgState
+}
+
+// FgState 防淹门状态
+type FgState = uint8
+
+const (
+	FgOpen           FgState = iota //开启(电机正常、锁锁定)
+	FgPreparingClose                //准备关闭(电机正常、锁拔出)
+	FgClosed                        //已关闭
+)