# modbus基类 class ModbusClient: def __init__(self, host='127.0.0.1', port=502, listen_address=1, write_address=2): self.master = modbus_tcp.TcpMaster(host=host, port=port) # 建立通信 self.master.set_timeout(5) self.master.set_verbose(True) self.data = None self.listen_address =...
import modbus_tk import modbus_tk.modbus_rtu as modbus_rtu import serial # 初始化RTU连接 def initialize_rtu_connection(port, baudrate): try: serial_port = serial.Serial(port, baudrate, timeout=1) master = modbus_rtu.RtuMaster(serial_port) master.set_debugging() return master except Excepti...
port=502)client.set_timeout(5.0)# 设置超时时间try:# 尝试读取寄存器值value=client.execute(1,cst.READ_HOLDING_REGISTERS,0,1)print("寄存器值:",value)exceptmodbus_tk.exceptions.ModbusErrorase:print("读取错误:",e)finally:# 关闭连接
AF_INET 为 IPV4 地址家族# SOCK_STREAM 即为基于流的协议,也就是 TCP 协议self._sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)# 设置超时时间,即实例化 TcpMaster 传入的值,默认参数为 5self.set_timeout(self.get_timeout())# 允许重用地址...
importmodbus_tkimportmodbus_tk.modbus_rtuasmodbus_rtuimportserial# 初始化 RTU 连接definitialize_rtu_connection(port,baudrate):try:serial_port=serial.Serial(port,baudrate,timeout=1)master=modbus_rtu.RtuMaster(serial_port)master.set_debuging()returnmasterexceptExceptionase:print(f"Error initializing RTU...
master.set_timeout(5.0) master.set_verbose(True) red = master.execute(2, cst.READ_COILS,0,2)# 这里可以修改需要读取的功能码print(red) alarm ="正常"returnlist(red), alarmexceptExceptionasexc:print(str(exc)) alarm = (str(exc))returnred, alarm##如果异常就返回[],故障信息if__name__ =...
(socket.AF_INET,socket.SOCK_STREAM)# 设置超时时间,即实例化 TcpMaster 传入的值,默认参数为 5self.set_timeout(self.get_timeout())# 允许重用地址(解决端口占用问题)self._sock.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)call_hooks("modbus_tcp.TcpMaster.before_connect",(self,))# 进行...
logger=modbus_tk.utils.create_logger("console")if__name__=="__main__":try:# 连接MODBUS TCP从机master=modbus_tcp.TcpMaster(host="192.168.1.15")master.set_timeout(5.0)logger.info("connected")# 读保持寄存器logger.info(master.execute(1,cst.READ_HOLDING_REGISTERS,0,16))# 读输入寄存器logger...
master.set_timeout(5.0) master.set_verbose(True) logger.info("connected")#time.sleep(2)command=input("Input 0 or 1 to control /default=1:")if(int(command)==0): logger.info(master.execute(1, cst.WRITE_SINGLE_COIL, 13, output_value=0))else: ...
importtime master=modbus_rtu.RtuMaster(serial_port='/dev/ttyUSB0')master.set_timeout(5.0)master.set_verbose(True)whileTrue:try:# 从站地址为1,寄存器地址为0,写入数据为12345master.execute(1,ModbusFunction.WRITE_SINGLE_REGISTER,0,output_value=12345)print("数据写入成功!")time.sleep(1)exceptExcept...