WIZ120SR

Overview

The WIZ120SR is a serial-to-Ethernet gateway module manufactured by WIZnet Inc. It integrates the W5100 hardware TCP/IP controller to convert RS-232 signals into TCP/IP protocols for network transmission. The device supports a maximum baud rate of 230 kbps and operates on a 5 V power supply. It features an RJ-45 Ethernet interface and supports DHCP, Static IP, and PPPoE configuration methods. The module includes DNS support and password-based security. It complies with RoHS standards and functions within a temperature range of 0°C to 80°C.

Feature Summary

• Integrates W5100 chip for stable hardware TCP/IP protocol stack implementation
• Converts RS-232 serial data to TCP/IP network packets for remote management
• Supports multiple network configuration modes including DHCP, Static, and PPPoE

Applications

• Remote monitoring and control of serial devices via Ethernet
• Industrial automation gateways connecting legacy equipment to networks
• Data acquisition systems requiring serial-to-Ethernet conversion

Procurement Notes

Verify the specific revision level and firmware version prior to procurement, as updates may affect configuration compatibility. Confirm that the 5V power supply requirement aligns with the target system design. Ensure the operating temperature range meets the environmental conditions of the deployment site. Check for any end-of-life notifications or discontinuation notices associated with this specific model number before finalizing orders.

Selection Notes

Select the WIZ120SR when a dedicated serial-to-Ethernet gateway is required without custom PCB design efforts. It is suitable for projects needing immediate network integration for RS-232 devices. Consider the WIZ750SR series if TTL interfaces or lower voltage operation (3.3V) are necessary instead of RS-232 and 5V requirements.

Part Context

WIZnet specializes in embedded Ethernet solutions using hardwired TCP/IP stacks. The WIZ120SR belongs to their serial device server line, leveraging the W5100 controller. This approach offloads network processing from the host MCU, simplifying development for industrial and IoT applications requiring reliable wired connectivity.

Replacement Considerations

The WIZ100SR is a related module in the same product family utilizing similar technology. Verify pinout and firmware command compatibility if substituting between these specific gateway models.