目标:使用睿擎派开发板通过RS485接口,读取Modbus从机设备(PT100温度变送器,例如KWL-PT100-02A)采集的温度值。 核心技能:掌握Modbus RTU主站通信流程,实现温度数据读取。 准备工作: 硬件:睿擎派、Modbus PT100温度变送器、连接线缆。 接线:确保开发板的RS485 ...
Modbus协议,从字面理解它包括Mod和Bus两部分,首先它是一种bus,即总线协议,和I2C、SPI类似,总线就意味着有主机,有从机,这些设备在同一条总线上。 Modbus支持单主机,多个从机,最多支持247个从机设备。关于Mod,因为这种协议最早被用在PLC控制器中,准确的 ...
Three additions to the Inline Modular family, the Modbus TCP/UDP and Modbus RTU/ASCII bus couplers, as well as a backplane expansion module, broaden the company’s offering compact I/O solutions. The ...
It is possible to connect up to 20 M-Bus slaves and enable them to communicate on a Modbus-TCP network. Mapping and configuration is done in a web-based configuration tool allowing the user to set up ...