User manual for the ZLSN2002 serial‑to‑Ethernet embedded module, covering features, specs, interfaces and setup.
The ZLSN2002 is a serial‑to‑Ethernet embedded module that enables microcontroller‑based systems to connect to TCP/IP networks. It supports multiple working modes, including TCP server/client, UDP and virtual serial port, and offers industrial‑grade temperature and voltage tolerance.
The manual provides an overview of the module, detailed functional features, technical parameters, pin definitions, configuration methods, remote device management, and ordering information, along with after‑sales support contacts. This manual is written in Chinese.
| Dimensions | 31.75 × 44.45 mm |
|---|---|
| Power Supply | 5 V DC, < 100 mA (3.3 V version available) |
| Operating Temperature | -40 °C to 85 °C |
| Storage Temperature | -60 °C to 125 °C |
| Humidity Range | 5 % to 95 % RH |
| Ethernet Interface | 10/100 M auto‑negotiation, 1 kV surge protection |
| Serial Baud Rate | 1200 ~ 460800 bps (921.6 kbps for ZLSN2002H) |
| Data Bits | 5 ~ 9 bits |
| Parity Options | None, Odd, Even, Mark, Space |
| Flow Control | RTS/CTS, DSR/DTR, XON/XOFF, None |
| IO Pins | 7 configurable I/O pins |
| Maximum Simultaneous TCP Connections | 10 |
It requires a 5 V DC supply (a 3.3 V version is also available) and draws less than 100 mA.
The module supports TCP Server, TCP Client, UDP, UDP multicast, virtual serial port, and Modbus TCP functions.
It can handle up to 10 simultaneous TCP connections.
The module operates from –40 °C to 85 °C.