diff --git a/global.h b/global.h
index f7329f1..6c0c679 100644
--- a/global.h
+++ b/global.h
@@ -5,6 +5,7 @@
 #include <QWidget>
 #include <QDebug>
 #include <QMutex>
+#include <QDateTime>
 
 extern "C"{
     #include "libmodbus/modbus.h"
@@ -14,6 +15,7 @@ typedef struct {
   int addr;
   float val1;
   QString time;
+  bool succ;
 }CapData;
 
 
@@ -86,17 +88,27 @@ public:
                     QThread::msleep(1000);
                     int ret = modbus_read_registers(mMod,itr->req[s].addr,itr->req[s].len,dat);
 
+
                     mMux.lock();
+                    bool succ = true;
+
                     if(mListData.contains(itr->addr)){
+                        if(ret < 0){
+                            succ = false;
+                        }
                         mListData[itr->addr]->push_front(new CapData{
                                                            itr->req[s].addr,
                                                            float(float(dat[0])),
+                                                           QDateTime::currentDateTime().toString("yyyy-mm-DD hh:MM::ss"),
+                                                           true
                                                          });
                       }else{
                         mListData[itr->addr] = new QList<CapData *>;
                         mListData[itr->addr]->push_front(new CapData{
                                                            itr->req[s].addr,
                                                            float(float(dat[0])),
+                                                           QDateTime::currentDateTime().toString("yyyy-mm-DD hh:MM::ss"),
+                                                           succ
                                                          });
                       }
 
diff --git a/subform.cpp b/subform.cpp
index 6e227f2..0429c92 100644
--- a/subform.cpp
+++ b/subform.cpp
@@ -33,7 +33,7 @@ SubForm::SubForm(QString addr,int baurate,int device_addr)
     mConfig->com =  *com;
     mConfig->baurate = baurate;
 
-    connect(pTimer,&QTimer::timeout,[=](){
+    connect(pTimer,&QTimer::timeout,[=]() {
         static float sd = 0;
         if(gAsyncData == nullptr)
             return;
@@ -41,8 +41,8 @@ SubForm::SubForm(QString addr,int baurate,int device_addr)
 
         int ret = gAsyncData->TakeLast(device_addr,&z);
         if(ret == 0){
+            bool succ = z->succ;
             mSeries1->append(sd,z->val1);
-
             pTime.append(QDateTime::currentDateTime().toString("yyyyMMdd-hh:mm:ss"));
 
             QStandardItem *found = nullptr;
@@ -52,39 +52,45 @@ SubForm::SubForm(QString addr,int baurate,int device_addr)
             int j = 0;
             for(;i < mModel->rowCount();i++){
                 for(;j < mModel->columnCount();j++){
-                    qDebug()<<mModel->item((i,j))->data(Qt::DisplayRole);
-                    if(mModel->item((i,j))->data(Qt::DisplayRole).toInt() == z->addr){
-                        found = mModel->item((i,j));
-                        break;
+                    if(mModel->item((i,j))  != nullptr){
+                        qDebug()<<mModel->item((i,j))->data(Qt::DisplayRole);
+                        if(mModel->item((i,j))->data(Qt::DisplayRole).toInt() == z->addr){
+                            found = mModel->item((i,j));
+                            break;
+                          }
                       }
                   }
               }
 
-//            if(list.size() != 0){
-//                found = list[0];
-//              }
-
             if(found == 0){
-                QStandardItem *item = new QStandardItem(QString("%1").arg(z->val1));
-                mModel->setItem(i, 1, item);
+                QStandardItem *item;
+                if(succ)
+                  item = new QStandardItem(QString("%1").arg(z->val1));
+                else
+                  item = new QStandardItem(QString("超时"));
 
+                mModel->setItem(i, 1, item);
                 QStandardItem *item1 = new QStandardItem(QString("%1").arg(z->addr));
                 mModel->setItem(i, 0, item1);
+                mModel->setItem(i, 2, new QStandardItem(QString("%1").arg(z->time)));
+
             }else{
                 mModel->item(found->row(),0)->setData(QString("%1").arg(z->addr),Qt::DisplayRole);
-                mModel->item(found->row(),1)->setData(QString("%1").arg(z->val1),Qt::DisplayRole);
+                if(succ)
+                  mModel->item(found->row(),1)->setData(QString("%1").arg(z->val1),Qt::DisplayRole);
+                else
+                  mModel->item(found->row(),1)->setData(QString("超时"),Qt::DisplayRole);
+                mModel->item(found->row(),2)->setData(QString("%1").arg(z->time),Qt::DisplayRole);
+
               }
 
-//            mModel->clear();
-//            mModel->setHorizontalHeaderLabels(QStringList() << "寄存器地址" << "返回值"<<"读取时间");
-
-
 
             sd ++;
             if(sd > mMaxX){
                 mMaxX += 1024;
                 mAxisX->setMax(mMaxX);
             }
+            delete z;
         }
     });
     pTimer->start(100);