Product Overview
The Schneider TSXETG3021 is a web server and gateway module designed for the TSX Micro PLCs series. It serves as both a web server and a communication gateway, enabling remote monitoring and control of automation systems. Equipped with a GSM/GPRS modem operating at 900 and 1800 MHz, this module provides robust mobile communication for industrial applications. Its compact design and versatile connectivity make it a valuable asset for modern automation networks.

Technical Specifications Breakdown
Key parameters for the TSXETG3021 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Memory Capacity | 32 MB internal, up to 1 GB Compact Flash, up to 1 GB USB memory stick |
| Type of Modem | GSM/GPRS 900/1800 MHz |
| Rated Supply Voltage | 12 V DC, 24 V DC |
| Supply Voltage Limits | 9…30 V DC |
| Rated Current | 100 mA |
| Ethernet Port | 10BASE-T/100BASE-TX |
| Discrete Input Number | 6 |
| Discrete Output Number | 2 |
| Mounting Support | Symmetrical DIN rail, plate |
| Weight | 2.06 lbs (0.94 kg) |
| Dimensions (W x H x D) | 73.2 mm x 151.5 mm x 116.7 mm |
Industry Applications
The TSXETG3021 excels in scenarios requiring remote access and data logging. For example, in water treatment facilities, operators use the GSM/GPRS modem to monitor pump status and tank levels from a central office, reducing site visits. In building management, the Ethernet port enables integration with existing networks for HVAC control. The module's ability to host custom web pages allows engineers to create tailored dashboards for real-time system visualization.
Installation & Setup Guidance
Mount the module on a symmetrical DIN rail or plate using the provided support. Connect the rated supply voltage within the 9…30 V DC range, ensuring the external power source is stable. For serial communication, use the SUB-D 9 connector with PPP and PAP authentication at up to 57 kbit/s. The Ethernet port supports 10BASE-T/100BASE-TX; use a standard twisted-pair cable. Configure the web server via the BootP/DHCP protocol for IP assignment.
Maintenance & Reliability
Operate the module within the ambient temperature range of 0…60 °C and relative humidity of 10…95% without condensation. The IP20 degree of protection requires installation in a clean, dry enclosure. Periodically inspect the LED indicators (RUN, BAT, ERR) for normal operation. The built-in mini firewall and VPN security features help protect against unauthorized access.
Compatibility & Integration
The TSXETG3021 supports multiple protocols including Modbus TCP/IP, Ethernet TCP/IP, and serial Modbus. It acts as a gateway between Ethernet TCP/IP and Modbus, and between modem and Modbus. The module can connect up to 31 devices via serial link, making it suitable for expanding existing TSX Micro PLC networks. It also functions as a router/RAS server for remote access.
Selection Guide & Purchasing Advice
When selecting this module, consider your communication needs: the GSM/GPRS modem is ideal for sites without wired internet, while the Ethernet port suits local networks. Verify the supply voltage range matches your installation. SpareTechPLC offers the TSXETG3021 with detailed specifications to help you integrate it into your system. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Troubleshooting & Common Issues
If the module fails to connect, check the LED indicators: a steady ERR LED may indicate a power issue. Verify the supply voltage is within 9…30 V DC and the rated current is 100 mA. For Ethernet problems, ensure the cable is properly connected and the port is configured for 10BASE-T or 100BASE-TX. If the modem does not register, confirm the GSM/GPRS signal strength and SIM card compatibility.
