feat: 修改Modbus写入值，更新SQL查询以处理空值，添加安全字符串转换函数

dao/inspection_dao.py

@@ -827,7 +827,7 @@ class InspectionDAO:
         try:
             sql = """
             SELECT DISTINCT data_corp, user_id, user_name, gzl_zl, mzl, ddmo, xpack, qd, spack_type, mxzs, jt, ddnote, code, type, lable, lib, gzl, maxsl, cz, size, cd, luno,
-                            qfqd, pono, xj, ysl, dycz, zx_code, edit_id, remarks, zx_name, bccd, tccd, zzyq, customer, customerexp, bz_bqd as bqd, bz_tqd as tqd, type_name, remarks_hb
+                            coalesce(qfqd,'') as qfqd, pono, xj, ysl, dycz, zx_code, edit_id, remarks, zx_name, bccd, tccd, zzyq, customer, customerexp, bz_bqd as bqd, bz_tqd as tqd, type_name, remarks_hb
             FROM wsbz_order_info WHERE ddmo = ?
             """
             params = (order_id,)

from pymodbus.py

@@ -2,7 +2,7 @@ from pymodbus.client import ModbusTcpClient
 import time
 client = ModbusTcpClient('localhost', port=5020)
 client.connect()
-client.write_registers(address=11, values=[14322])
+client.write_registers(address=11, values=[5962])
 # client.write_registers(address=3, values=[0])
 # time.sleep(2)
 # client.write_registers(address=0, values=[0])

widgets/main_window.py

@@ -4738,4 +4738,7 @@ class MainWindow(MainWindowUI):
         except Exception as e:
             logging.error(f"处理炉号选择失败: {str(e)}")
             from PySide6.QtWidgets import QMessageBox
-            QMessageBox.critical(self, "错误", f"处理炉号选择失败: {str(e)}")
+            QMessageBox.critical(self, "错误", f"处理炉号选择失败: {str(e)}")
+
+def safe_str(val):
+    return "" if val is None else str(val)