修改设备为空bug

IMCS_CCS/Service/Impl/TaskJobService.cs

@@ -1285,6 +1285,10 @@ namespace IMCS.CCS.Service.Impl
 
                     //缓存取PLC tagvalue 值
                     List<CcsTagValue> tagValues = new List<CcsTagValue>();
+                    if(device == null)
+                    {
+                        continue;
+                    }
                     string tag_value_redis_key = imcs_redis_key + device.Ip + ":" + device.ProtocolType;
                     var tagData = await _redisService.Database.StringGetAsync(tag_value_redis_key);
                     if (tagData.IsNullOrEmpty)