diff --git a/model/ProjectModel/DeviceManage.py b/model/ProjectModel/DeviceManage.py
index 0c7a323..b3ac3e4 100644
--- a/model/ProjectModel/DeviceManage.py
+++ b/model/ProjectModel/DeviceManage.py
@@ -165,6 +165,7 @@ class DevicesManange():
         self.dpSlaveDevices = collections.OrderedDict() # 有序字典 (OrderedDict)
         self.paMasterDevices = collections.OrderedDict()
         self.paSlaveDevices = collections.OrderedDict()
+    def connect(self):
         self.dpSlaveModbus = TcpMaster(host = '192.168.2.10', port = 502)
         self.paSlaveModbus = TcpMaster(host = '192.168.4.10', port = 502)
         self.dpMasterModbus = TcpMaster(host = '192.168.1.10', port = 502)
@@ -306,6 +307,9 @@ class DevicesManange():
             if bytesNums == 0:
                 continue
             intValues = modbusM.readHoldingRegisters(slaveId = 1, startAddress = 0, varNums = intNums)
+            if intValues == 'error':
+                self.connect()
+                return
             bytesValues = struct.pack(f"!{'H' * len(intValues)}", *intValues)
             # print(bytesValues, intNums, bytesNums)
                     # print(bytes)