问题描述
我正在尝试使用库 Pymodbus 实现 modbus 异步串行服务器。我使用 ModbusRtuFramer 作为框架模板。不幸的是，当我发送命令时，看起来字节被拆分并且无法识别帧。我发布了代码和日志。
StartSerialServer(context,identity=identity,framer=ModbusRtuFramer,port='/dev/ttyS2',timeout=0.1,baudrate=9600,bytesize=8,parity='N',stopbits=1)
我发送命令 03102c0002（从地址 102c 开始读取 2 个保持寄存器。日志说：
DEBUG:pymodbus.server.asynchronous:Data Received: 0x1
DEBUG:pymodbus.framer.rtu_framer:Frame - [b'\x01'] not ready
DEBUG:pymodbus.server.asynchronous:Data Received: 0x3 0x10 0x2c
DEBUG:pymodbus.framer.rtu_framer:Frame check Failed,ignoring!!
DEBUG:pymodbus.framer.rtu_framer:Resetting frame - Current Frame in buffer - 0x1 0x3 0x10 0x2c
DEBUG:pymodbus.server.asynchronous:Data Received: 0x0 0x2 0x1 0x2
DEBUG:pymodbus.framer.rtu_framer:Frame check Failed,ignoring!!
DEBUG:pymodbus.framer.rtu_framer:Resetting frame - Current Frame in buffer - 0x0 0x2 0x1 0x2
DEBUG:pymodbus.server.asynchronous:Data Received: 0x1
DEBUG:pymodbus.framer.rtu_framer:Frame - [b'\x01'] not ready
DEBUG:pymodbus.server.asynchronous:Data Received: 0x3 0x10 0x2c
DEBUG:pymodbus.framer.rtu_framer:Frame check Failed,ignoring!!
DEBUG:pymodbus.framer.rtu_framer:Resetting frame - Current Frame in buffer - 0x1 0x3 0x10 0x2c
DEBUG:pymodbus.server.asynchronous:Data Received: 0x0 0x2 0x1
DEBUG:pymodbus.framer.rtu_framer:Frame check Failed,ignoring!!
DEBUG:pymodbus.framer.rtu_framer:Resetting frame - Current Frame in buffer - 0x0 0x2 0x1
DEBUG:pymodbus.server.asynchronous:Data Received: 0x2
DEBUG:pymodbus.framer.rtu_framer:Frame - [b'\x02'] not ready
DEBUG:pymodbus.server.asynchronous:Data Received: 0x1
DEBUG:pymodbus.framer.rtu_framer:Frame check Failed,ignoring!!
DEBUG:pymodbus.framer.rtu_framer:Resetting frame - Current Frame in buffer - 0x2 0x1
DEBUG:pymodbus.server.asynchronous:Data Received: 0x3 0x10 0x2c 0x0
DEBUG:pymodbus.framer.rtu_framer:Frame check Failed,ignoring!!
DEBUG:pymodbus.framer.rtu_framer:Resetting frame - Current Frame in buffer - 0x3 0x10 0x2c 0x0
DEBUG:pymodbus.server.asynchronous:Data Received: 0x2 0x1 0x2
DEBUG:pymodbus.framer.rtu_framer:Frame check Failed,ignoring!!
DEBUG:pymodbus.framer.rtu_framer:Resetting frame - Current Frame in buffer - 0x2 0x1 0x2
DEBUG:pymodbus.server.asynchronous:Data Received: 0x1
DEBUG:pymodbus.framer.rtu_framer:Frame - [b'\x01'] not ready
DEBUG:pymodbus.server.asynchronous:Data Received: 0x3 0x10 0x2c
DEBUG:pymodbus.framer.rtu_framer:Frame check Failed,ignoring!!
DEBUG:pymodbus.framer.rtu_framer:Resetting frame - Current Frame in buffer - 0x0 0x2 0x1 0x2
解决方法
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