Index: dialin/utils/nv_ops_utils.py
===================================================================
diff -u -rb9a0dd1c65e089b0e7a7ddb83cf2b2669ef3049a -r1c507eb2cac4a66d8d0fd567b8eed90374c1d809
--- dialin/utils/nv_ops_utils.py	(.../nv_ops_utils.py)	(revision b9a0dd1c65e089b0e7a7ddb83cf2b2669ef3049a)
+++ dialin/utils/nv_ops_utils.py	(.../nv_ops_utils.py)	(revision 1c507eb2cac4a66d8d0fd567b8eed90374c1d809)
@@ -196,7 +196,10 @@
                             for spec in dialin_record[group][hardware]:
                                 cell_value = self.excel_ops.get_cell_value(self._excel_workbook, self._record_name, row,
                                                                            col)
-                                if 'crc' not in spec and 'time' not in spec:
+                                # Check if the cell value is not none. If it is none, it cannot be converted to a number
+                                # like float or integer
+                                is_cell_value_valid = True if cell_value is not None else False
+                                if 'crc' not in spec and 'time' not in spec and is_cell_value_valid:
                                     temp_buffer.append(struct.pack(dialin_record[group][hardware][spec][0], cell_value))
                                     if dialin_record[group][hardware][spec][1] != cell_value:
                                         is_value_different = True
@@ -209,7 +212,7 @@
                                     date_time = self.get_current_date_time(epoch_time)
                                     self.excel_ops.write_to_excel(self._excel_workbook, self._record_name, row, col,
                                                                   date_time)
-                                elif 'time' in spec and isinstance(cell_value, str):
+                                elif 'time' in spec and isinstance(cell_value, str) and is_cell_value_valid:
                                     epoch_time = self.get_date_time_in_epoch(cell_value)
                                     dialin_record[group][hardware][spec][1] = epoch_time
 
@@ -228,7 +231,11 @@
                             for spec in dialin_record[group][hardware]:
                                 cell_value = self.excel_ops.get_cell_value(self._excel_workbook, self._record_name, row,
                                                                            col)
-                                dialin_record[group][hardware][1] = cell_value
+                                # Check if the cell value is not none. If it is none, it cannot be converted to a number
+                                # like float or integer
+                                is_cell_value_valid = True if cell_value is not None else False
+                                if is_cell_value_valid:
+                                    dialin_record[group][hardware][1] = cell_value
                         temp_buffer.clear()
                         row += 1
             row += 1