“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 ...

Modbus功能码占用1字节，取值范围是1127。之所以127以上不能用，是因为Modbus规定当出现异常时，功能码+0x80（十进制128）代表异常状态，因此129（1+128）255（127+128）的取值代表异常码。 Modbus常用功能码 功能码可以分为位操作和字操作两类。位操作的最小为1位（bit ...

Modbus TCP connections pose many benefits over RTU RS-485 alternatives. Image: PV Tech. In the last couple of years, the market has seen a few commercial and industrial (C&I) inverter models and ...

The mistake in 2026 isn’t using Modbus, it’s integrating it incorrectly. Success comes from isolating your Modbus networks, ...