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The Modbus protocol has become an open, widely adopted industrial standard supported by numerous vendors. It is increasingly being chosen as a data communication protocol.

The DNS-100 serial port server may be the world’s smallest yet most powerful serial-to-Ethernet server.

The DNS-18 (single‑port serial server) is a device‑to‑network server that enables industrial RS‑232 and RS‑422/485 serial devices to gain network connectivity instantly.

The DNS-1A, developed by Beijing Zhongxinchuang Technology Co., Ltd., is a highly reliable serial port server designed for industrial applications. It features a 16-bit CPU, 128 KB of RAM, and 512 KB of Flash memory, supports dual power inputs with a 9–36 V DC input range, and its serial ports can be configured as RS232, RS485, or RS422 interfaces.

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