diff --git a/src/main/scala/backBoard/shin/SlaveParser.scala b/src/main/scala/backBoard/shin/SlaveParser.scala
index 0e8316b..0741689 100644
--- a/src/main/scala/backBoard/shin/SlaveParser.scala
+++ b/src/main/scala/backBoard/shin/SlaveParser.scala
@@ -68,6 +68,7 @@ abstract class SlaveParserBase extends Module{
 
 
   val localDevIndex = Reg(UInt(14.W)) //当前设备索引
+  dontTouch(localDevIndex)
 
 
   // 认为只有下行到下行，上行到上行模式，探针是独立发起操作
@@ -244,10 +245,10 @@ abstract class SlaveParserBase extends Module{
 
   io.sram_w.enr := false.B
 
-  io.sram_w.enw := //req fire 后 已经反相
+  io.sram_w.enw := (downRecParser.io.stateCurr === STATE_PAYLOAD_DATA) & ( //req fire 后 已经反相
     ( ~isDownRecPing & downSubMsgInfo(0).devIndex === localDevIndex & (downSubMsgInfo(0).operator === 1.U | downSubMsgInfo(0).operator === 3.U)) |
     (  isDownRecPing & downSubMsgInfo(1).devIndex === localDevIndex & (downSubMsgInfo(1).operator === 1.U | downSubMsgInfo(1).operator === 3.U))
-  
+  )
 
 
   io.sram_w.addr   := addrw
diff --git a/tb/shinTest/SlaveParserTb.v b/tb/shinTest/SlaveParserTb.v
index 652d5f1..b089dac 100644
--- a/tb/shinTest/SlaveParserTb.v
+++ b/tb/shinTest/SlaveParserTb.v
@@ -159,6 +159,9 @@ end
 
 initial begin
   #1000
+
+    s_SlaveParser.localDevIndex = 3; //强制设备索引为3，测试子报文操作
+
     @(posedge clock) #3 
     io_downIn_valid = 1;
     io_downIn_bits_tdata = 8'h20;
@@ -174,43 +177,82 @@ initial begin
 
 
     for( integer i = 0; i < 8; i = i + 1 ) begin
-
-      @(posedge clock) #3 
-      io_downIn_valid = 1;
-      io_downIn_bits_tdata = $random; 
-
-      @(posedge clock) #3 
-      io_downIn_valid = 1;
-      io_downIn_bits_tdata = $random;
-
-      @(posedge clock) #3 
-      io_downIn_valid = 1;
-      io_downIn_bits_tdata = $random;
-
-      @(posedge clock) #3 
-      io_downIn_valid = 1;
-      io_downIn_bits_tdata = $random;
-
-      @(posedge clock) #3 
-      io_downIn_valid = 1;
-      io_downIn_bits_tdata = 8'h0;
-
-      @(posedge clock) #3 
-      io_downIn_valid = 1;
-      io_downIn_bits_tdata = 8'd56;
-
-      @(posedge clock) #3 
-      io_downIn_valid = 1;
-      io_downIn_bits_tdata = $random;
-
-      @(posedge clock) #3 
-      io_downIn_valid = 1;
-      io_downIn_bits_tdata = $random;
-
-      for( integer j = 0; j < 64-8; j = j+ 1 )begin
+      if( i != 5 ) begin
         @(posedge clock) #3 
         io_downIn_valid = 1;
-        io_downIn_bits_tdata = 8'ha5; //heeader length 512
+        io_downIn_bits_tdata = $random; 
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = $random;
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = $random;
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = $random;
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = 8'h0;
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = 8'd56;
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = $random;
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = $random;
+
+        for( integer j = 0; j < 64-8; j = j+ 1 ) begin
+          @(posedge clock) #3 
+          io_downIn_valid = 1;
+          io_downIn_bits_tdata = 8'ha5; //heeader length 512
+        end
+      end else begin //第5个子报文操作
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = 8'h0; 
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = 8'hC; //3号设备 类型空
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = 8'h00; //地址
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = 8'h10; //地址
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = 8'h30; //命令3 长度56
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = 8'd56; //长度56
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = $random; //工作计数
+
+        @(posedge clock) #3 
+        io_downIn_valid = 1;
+        io_downIn_bits_tdata = $random; //工作计数
+
+        for( integer j = 0; j < 64-8; j = j+ 1 ) begin
+          @(posedge clock) #3 
+          io_downIn_valid = 1;
+          io_downIn_bits_tdata = 8'h55; //heeader length 512
+        end
       end
     end