使用Python的pymodbus库进行Modbus TCP通信,可以按照以下步骤进行: 安装pymodbus库 首先,你需要确保已经安装了pymodbus库。如果还没有安装,可以使用以下pip命令进行安装: bash pip install pymodbus 创建一个Modbus TCP客户端对象 接下来,你需要创建一个Modbus TCP客户端对象。这可以通过导入pymodbus.client.sync模块中...
client_async.py 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #!/usr/bin/env python3 '''Pymodbus异步客户端示例 ''' import asyncio import logging import pymodbus.client as modbusClient from pymodbus import ModbusException _logger = logging.getLogger('logger') class Args: comm = 'tcp' #...
读写线圈 | 读取输入变量 | 读写保持寄存器 frompymodbus.client.syncimportModbusTcpClientfrompymodbus.bit_read_messageimportReadCoilsResponsefrompymodbus.register_read_messageimportReadInputRegistersResponsefrompymodbus.exceptionsimportConnectionException# 连接失败,用于异常处理host='127.0.0.1'port=503client=ModbusTcpC...
读写线圈 | 读取输入变量 | 读写保持寄存器 frompymodbus.client.syncimportModbusTcpClientfrompymodbus.bit_read_messageimportReadCoilsResponsefrompymodbus.register_read_messageimportReadInputRegistersResponsefrompymodbus.exceptionsimportConnectionException# 连接失败,用于异常处理host='127.0.0.1'port=503client=ModbusTcpC...
pymodbus.client.sync import ModbusTcpClient client = ModbusTcpClient('localhost', port=502) client...
Modbus TCP:对于通过以太网连接的设备,我们使用TCP连接。在Python中,可以通过“pymodbus”库创建一个Modbus TCP客户端,示例如下: from pymodbus.client.sync import ModbusTcpClient # Create a Modbus TCP client client = ModbusTcpClient('192.168.0.1') # Replace with your device's IP address ...
frompymodbus.clientimportModbusTcpClientfrompymodbus.exceptionsimportModbusIOException, ConnectionException, NoSuchSlaveExceptionimporttimedefread_holding_registers(client, slave_address):"""尝试读取指定从站的保持寄存器40001的数据"""try:# 使用client.read_holding_registers函数读取保持寄存器result = client.read_ho...
路径:PYTHON_HOME\Lib\site-packages\pymodbus\logging.py 修改源码是为了更方便使用类库自带日志打印器 # ...略classLog:"""Class to hide logging complexity. :meta private: """# _logger = logging.getLogger(__name__) # commented by shouke_logger = logging.getLogger('logger')# added by shouke ...
pymodbus.client.mixin.ModbusClientMixin def read_coils(self, address: int, count: int = 1, slave: int = 0, **kwargs: Any) 读线圈(功能码 0x01) address 要读取数据的起始地址 count 可选参数,要读取的线圈数量(针对read_coils,发现count设置大于1的数和设置为1是一样的效果) slave 可选参数,Mod...
from pymodbus.client.sync import ModbusTcpClient # 创建Modbus客户端实例 client = ModbusTcpClient('127.0.0.1') # 连接到Modbus服务器 client.connect() # 读取保持寄存器(从地址0开始,读取10个寄存器) result = client.read_holding_registers(0, 10) if result.isError(): print("Modbus error:", result)...