Welcome to my quick review of an inexpensive 2-channel 5V relay module controlled via RS485 bus utilizing Modbus RTU protocol. As claimed by some online sellers, this easy-to-get Modbus RTU 2-Channel ...

A diagram of Modbus system architecture, in which the DO-1 monitoring device integrates field-level RS485 devices into the Ethernet-based monitoring system. Learn how affordable and straightforward ...

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“Not being overcomplicated is Modbus TCP/IP’s biggest draw, not only for PLCs, but especially for PC-based applications,” said Jason Haldeman, senior product specialist for I/O and networking at ...