华荣三照明、合信、荣欣八组合馈电
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冯佳
343
Test/test_modscan.py
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343
Test/test_modscan.py
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from PyQt5.QtWidgets import (QApplication, QMainWindow, QWidget, QVBoxLayout, QHBoxLayout, QLabel, QPushButton,
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QLineEdit, QMessageBox, QComboBox, QTableWidget, QTableWidgetItem, QSpinBox, QGroupBox, QFormLayout, QAction, QMenuBar)
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from PyQt5.QtCore import Qt, QTimer
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from PyQt5.QtGui import QFont, QIcon
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from modbus_tk import modbus_tcp, modbus_rtu
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import serial
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from modbus_tk.defines import *
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class ModbusClient(QMainWindow):
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def __init__(self):
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super().__init__()
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self.init_ui()
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self.master = None
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self.timer = QTimer()
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self.timer.timeout.connect(self.update_data)
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def init_ui(self):
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self.setWindowTitle("Modbus 客户端")
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self.setGeometry(100, 100, 900, 700)
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self.setStyleSheet("""
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QWidget {
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background-color: #2e2e2e;
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color: #ffffff;
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font-family: Arial;
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font-size: 14px;
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}
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QGroupBox {
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font-weight: bold;
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font-size: 16px;
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border: 1px solid #555;
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border-radius: 5px;
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margin-top: 10px;
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}
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QGroupBox::title {
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subcontrol-origin: margin;
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subcontrol-position: top left;
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padding: 10px;
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}
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QLabel {
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font-size: 14px;
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}
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QLineEdit, QComboBox, QSpinBox {
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padding: 5px;
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border: 1px solid #555;
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border-radius: 5px;
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background-color: #444;
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color: #fff;
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}
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QPushButton {
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background-color: #555;
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border: 1px solid #444;
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border-radius: 5px;
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padding: 5px;
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}
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QPushButton:hover {
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background-color: #666;
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}
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QPushButton:pressed {
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background-color: #777;
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}
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QTableWidget {
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background-color: #444;
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alternate-background-color: #555;
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border: 1px solid #555;
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}
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QHeaderView::section {
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background-color: #333;
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color: #fff;
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padding: 5px;
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border: 1px solid #444;
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}
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""")
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# 创建菜单栏
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menu_bar = self.menuBar()
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file_menu = menu_bar.addMenu('文件')
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connection_menu = menu_bar.addMenu('连接')
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action_menu = menu_bar.addMenu('操作')
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# 创建文件菜单项
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exit_action = QAction('退出', self)
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exit_action.triggered.connect(self.close)
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file_menu.addAction(exit_action)
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# 创建连接菜单项
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connect_action = QAction('连接', self)
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connect_action.triggered.connect(self.connect_modbus)
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connection_menu.addAction(connect_action)
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disconnect_action = QAction('断开连接', self)
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disconnect_action.triggered.connect(self.disconnect_modbus)
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connection_menu.addAction(disconnect_action)
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# 创建操作菜单项
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execute_action = QAction('执行', self)
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execute_action.triggered.connect(self.execute_action)
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action_menu.addAction(execute_action)
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monitor_action = QAction('开始监视', self)
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monitor_action.triggered.connect(self.toggle_monitoring)
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action_menu.addAction(monitor_action)
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# 创建中心小部件
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central_widget = QWidget()
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self.setCentralWidget(central_widget)
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main_layout = QVBoxLayout(central_widget)
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# 连接部分
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connection_group = QGroupBox("连接设置")
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connection_layout = QFormLayout()
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self.mode_combo = QComboBox()
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self.mode_combo.addItem("TCP", "TCP")
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self.mode_combo.addItem("RTU", "RTU")
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self.mode_combo.currentIndexChanged.connect(self.toggle_mode)
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connection_layout.addRow(QLabel("模式选择:"), self.mode_combo)
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self.ip_edit = QLineEdit()
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self.ip_edit.setPlaceholderText("输入 IP 地址")
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connection_layout.addRow(QLabel("IP 地址 / 串口端口:"), self.ip_edit)
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self.port_edit = QLineEdit()
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self.port_edit.setPlaceholderText("输入端口号 / 波特率")
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connection_layout.addRow(QLabel("端口号 / 波特率:"), self.port_edit)
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self.connect_button = QPushButton("连接")
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self.connect_button.clicked.connect(self.connect_modbus)
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connection_layout.addRow(self.connect_button)
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self.disconnect_button = QPushButton("断开连接")
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self.disconnect_button.clicked.connect(self.disconnect_modbus)
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self.disconnect_button.setEnabled(False)
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connection_layout.addRow(self.disconnect_button)
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connection_group.setLayout(connection_layout)
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main_layout.addWidget(connection_group)
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# 功能部分
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function_group = QGroupBox("功能选择")
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function_layout = QFormLayout()
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self.function_combo = QComboBox()
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self.function_combo.addItem("读线圈 (0)", READ_COILS)
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self.function_combo.addItem("读输入 (1)", READ_DISCRETE_INPUTS)
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self.function_combo.addItem("读保持寄存器 (3)", READ_HOLDING_REGISTERS)
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self.function_combo.addItem("读输入寄存器 (4)", READ_INPUT_REGISTERS)
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self.function_combo.addItem("写单个线圈 (5)", WRITE_SINGLE_COIL)
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self.function_combo.addItem("写单个寄存器 (6)", WRITE_SINGLE_REGISTER)
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self.function_combo.addItem("写多个寄存器 (16)", WRITE_MULTIPLE_REGISTERS)
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self.function_combo.currentIndexChanged.connect(self.update_function_description)
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function_layout.addRow(QLabel("功能码:"), self.function_combo)
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self.function_description = QLabel()
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function_layout.addRow(QLabel("功能描述:"), self.function_description)
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self.device_edit = QLineEdit()
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self.device_edit.setPlaceholderText("输入设备地址")
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function_layout.addRow(QLabel("设备地址:"), self.device_edit)
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self.address_edit = QLineEdit()
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self.address_edit.setPlaceholderText("输入寄存器地址")
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function_layout.addRow(QLabel("寄存器地址:"), self.address_edit)
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self.value_edit = QLineEdit()
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self.value_edit.setPlaceholderText("输入写入值")
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function_layout.addRow(QLabel("写入值:"), self.value_edit)
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self.execute_button = QPushButton("执行")
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self.execute_button.clicked.connect(self.execute_action)
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function_layout.addRow(self.execute_button)
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function_group.setLayout(function_layout)
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main_layout.addWidget(function_group)
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# 数据部分
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data_group = QGroupBox("数据")
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data_layout = QVBoxLayout()
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self.data_table = QTableWidget()
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self.data_table.setColumnCount(2)
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self.data_table.setHorizontalHeaderLabels(["地址", "值"])
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data_layout.addWidget(self.data_table)
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data_group.setLayout(data_layout)
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main_layout.addWidget(data_group)
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# 实时监视部分
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monitor_group = QGroupBox("实时监视")
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monitor_layout = QFormLayout()
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self.monitor_interval_edit = QSpinBox()
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self.monitor_interval_edit.setRange(100, 5000) # 设置监视间隔范围
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self.monitor_interval_edit.setValue(1000) # 设置默认值
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monitor_layout.addRow(QLabel("监视间隔(ms):"), self.monitor_interval_edit)
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self.start_address_edit = QLineEdit()
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self.start_address_edit.setPlaceholderText("输入开始地址")
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monitor_layout.addRow(QLabel("监视开始地址:"), self.start_address_edit)
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self.length_edit = QSpinBox()
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self.length_edit.setRange(1, 100)
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monitor_layout.addRow(QLabel("长度:"), self.length_edit)
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self.monitor_button = QPushButton("开始监视")
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self.monitor_button.clicked.connect(self.toggle_monitoring)
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monitor_layout.addRow(self.monitor_button)
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monitor_group.setLayout(monitor_layout)
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main_layout.addWidget(monitor_group)
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self.update_function_description()
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def toggle_mode(self):
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mode = self.mode_combo.currentData()
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if mode == "TCP":
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self.ip_edit.setPlaceholderText("输入 IP 地址")
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self.port_edit.setPlaceholderText("输入端口号")
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elif mode == "RTU":
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self.ip_edit.setPlaceholderText("输入串口端口")
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self.port_edit.setPlaceholderText("输入波特率")
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def connect_modbus(self):
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mode = self.mode_combo.currentData()
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try:
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if mode == "TCP":
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ip = self.ip_edit.text()
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port = int(self.port_edit.text())
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self.master = modbus_tcp.TcpMaster(ip, port)
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self.master.open()
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elif mode == "RTU":
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port = self.ip_edit.text()
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baudrate = int(self.port_edit.text())
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self.master = modbus_rtu.RtuMaster(serial.Serial(port, baudrate))
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self.master.open()
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QMessageBox.information(self, "连接", f"成功连接到 Modbus {mode} 设备。")
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self.connect_button.setEnabled(False)
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self.disconnect_button.setEnabled(True)
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except Exception as e:
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QMessageBox.critical(self, "连接错误", f"无法连接到 Modbus 设备: {e}")
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def disconnect_modbus(self):
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if self.master:
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self.master.close()
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self.master = None
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QMessageBox.information(self, "断开连接", "已断开与 Modbus 设备的连接。")
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self.connect_button.setEnabled(True)
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self.disconnect_button.setEnabled(False)
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def update_function_description(self):
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descriptions = {
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READ_COILS: "读线圈状态",
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READ_DISCRETE_INPUTS: "读离散输入状态",
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READ_HOLDING_REGISTERS: "读保持寄存器值",
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READ_INPUT_REGISTERS: "读输入寄存器值",
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WRITE_SINGLE_COIL: "写单个位",
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WRITE_SINGLE_REGISTER: "写单个寄存器",
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WRITE_MULTIPLE_REGISTERS: "写多个寄存器",
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}
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function_code = self.function_combo.currentData()
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self.function_description.setText(descriptions.get(function_code, ""))
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def execute_action(self):
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if not self.master:
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QMessageBox.warning(self, "连接", "请先连接到 Modbus 设备。")
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return
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function_code = self.function_combo.currentData()
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device = int(self.device_edit.text())
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address = int(self.address_edit.text())
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try:
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if function_code in [READ_COILS, READ_DISCRETE_INPUTS]:
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response = self.master.execute(device, function_code, address, 1)
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data = response[0]
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self.display_data({address: data})
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elif function_code in [READ_HOLDING_REGISTERS, READ_INPUT_REGISTERS]:
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response = self.master.execute(device, function_code, address, 1)
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data = response[0]
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self.display_data({address: data})
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elif function_code == WRITE_SINGLE_COIL:
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value = int(self.value_edit.text())
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if value not in [0, 1]:
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raise ValueError("写线圈的值必须为0或1")
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self.master.execute(device, function_code, address, output_value=value)
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QMessageBox.information(self, "写入", "写入操作成功完成。")
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elif function_code == WRITE_SINGLE_REGISTER:
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value = int(self.value_edit.text())
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self.master.execute(device, function_code, address, output_value=value)
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QMessageBox.information(self, "写入", "写入操作成功完成。")
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elif function_code == WRITE_MULTIPLE_REGISTERS:
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values_str = self.value_edit.text()
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values = [int(val) for val in values_str.split(",")]
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self.master.execute(device, function_code, address, output_value=values)
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QMessageBox.information(self, "写入", "写入操作成功完成。")
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except Exception as e:
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QMessageBox.critical(self, "错误", f"执行操作时出错: {e}")
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def display_data(self, data):
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# 批量更新表格
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self.data_table.setRowCount(len(data))
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for i, (address, value) in enumerate(data.items()):
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self.data_table.setItem(i, 0, QTableWidgetItem(str(address)))
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self.data_table.setItem(i, 1, QTableWidgetItem(str(value)))
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def toggle_monitoring(self):
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if self.timer.isActive():
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self.timer.stop()
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self.monitor_button.setText("开始监视")
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else:
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self.timer.start(self.monitor_interval_edit.value())
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self.monitor_button.setText("停止监视")
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def update_data(self):
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if not self.master:
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self.timer.stop()
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self.monitor_button.setText("开始监视")
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QMessageBox.warning(self, "连接", "请先连接到 Modbus 设备。")
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return
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try:
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device = int(self.device_edit.text())
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start_address = int(self.start_address_edit.text())
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length = self.length_edit.value()
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response = self.master.execute(device, READ_HOLDING_REGISTERS, start_address, length)
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# 将数据转换为地址-值对的字典
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data = {start_address + i: val for i, val in enumerate(response)}
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# 更新表格
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self.display_data(data)
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except Exception as e:
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self.timer.stop()
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self.monitor_button.setText("开始监视")
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QMessageBox.critical(self, "错误", f"读取数据时出错: {e}")
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if __name__ == "__main__":
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app = QApplication([])
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app.setFont(QFont("Arial", 10)) # 设置全局字体
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window = ModbusClient()
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window.show()
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app.exec_()
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