Why Maintenance Engineers Trust the TSXETG100 for Legacy Network Upgrades
Maintenance engineers managing aging control systems face a common challenge: bridging reliable legacy serial devices with modern Ethernet networks without replacing the entire PLC rack. The Schneider Electric TSXETG100 solves this problem directly. As an Ethernet Modbus gateway/router within the TSX Micro PLCs lineup and the ConneXium range, it provides a transparent, DIN-rail-mounted path from RS485 or RS232 serial links to 10/100 Mbps Ethernet. This module keeps existing Modbus devices productive while enabling plant-floor data visibility through standard web services.
Key Technical Specifications That Matter on the Floor
Power and Physical Form Factor
The TSXETG100 operates on a rated supply voltage of 24 V DC, matching the control power already present in most TSX Micro PLC panels. At just 72 mm wide, 81 mm high, and 76 mm deep, it occupies minimal DIN rail space. The symmetrical DIN rail mounting support allows quick replacement without drilling new panel holes. Weighing 3.00 lbs (1.36 kg), it is solid enough for industrial environments yet easy to handle during service.
Communication Capabilities
This gateway supports Ethernet protocols including Modbus TCP/IP, HTTP, FTP, SNMP, and ARP. The RJ45 port auto-negotiates 10/100 Mbps speeds. For serial devices, you get RS485 at 57.6 kbps and RS232 at 38.4 kbps, with protocols Modbus RTU and ASCII. The module supports up to 32 devices on the Modbus serial link, which covers most legacy sensor and drive networks. A built-in miniature firewall with IP address filtering and password protection adds a layer of network security without extra hardware.
Diagnostics and Web Services
Local signaling includes three LEDs for serial link communication (RS485, RX, TX) and four LEDs for Ethernet communication (LK, RX, TX, 100). These indicators let you verify link status and data flow at a glance during troubleshooting. The integrated web server provides predefined web pages for diagnostics on Ethernet and Modbus links. You can access the connected products list and read Modbus device registers directly from a browser, which simplifies fault isolation.
Seamless Integration with Existing Control Systems
The TSXETG100 is designed for all products compatible with the Modbus standard. It fits naturally into Transparent Ready architectures, where Ethernet and Modbus coexist. The module includes a BOOTP protocol and FDR client for automated IP address assignment, reducing commissioning time. An SNMP agent allows device administration through an SNMP manager, so your network team can monitor the gateway alongside other infrastructure. Because it reads and writes Modbus registers of connected devices, you can map legacy data into SCADA or HMI systems without rewriting PLC logic.
Installation and Setup for Minimal Downtime
Mount the TSXETG100 on a symmetrical DIN rail inside your control cabinet. Connect the 24 V DC supply, then attach the Ethernet RJ45 cable and the serial link using either the 5-way removable terminal block for RS485 or the RJ45 port for RS232. The removable terminal block speeds up replacement if the unit needs service. Configure IP settings through the web interface or BOOTP. The predefined web pages guide you through Modbus register access and link diagnostics. Always follow Schneider Electric’s installation manual for wiring and grounding. Verify that the operating environment stays within 32-140 °F (0-60 °C) and 5-95% relative humidity at 104 °F (40 °C) without condensation.
Maintenance and Reliability in Harsh Environments
The IP30 degree of protection shields the module from dust and accidental contact with solid objects, making it suitable for clean control rooms and protected enclosures. For maintenance engineers, the LED indicators are the first diagnostic tool. A quick check of the RS485, RX, TX, LK, and 100 LEDs can distinguish between a cabling fault and a configuration issue. Periodically inspect the DIN rail mounting and terminal connections for tightness. Keep the enclosure free of conductive dust. The module complies with EN 61000-4-2/3/4/5/6/8, UL 508, CSA C22.2 No 14-M91, EN 55022 FCC class A, and EN 61000-6-2, and holds cUL and UL certifications. These standards support reliable operation in industrial electromagnetic environments. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Buyer’s Checklist for the TSXETG100
Before purchasing, confirm that your application uses Modbus RTU or ASCII serial devices and requires Ethernet connectivity via Modbus TCP/IP. Check that your panel has a 24 V DC supply and symmetrical DIN rail space. The TSXETG100 works with TSX Micro PLCs and other Modbus-compatible products. If you need to connect more than 32 serial devices, consider additional gateways. SpareTechPLC supplies this module and can help you verify compatibility with your existing Schneider Electric installation.
Frequently Asked Questions
What is the primary function of the TSXETG100?
It acts as an Ethernet Modbus gateway/router, bridging serial Modbus RTU/ASCII devices to Ethernet networks using Modbus TCP/IP and other protocols.
Can I use the TSXETG100 with non-Schneider Modbus devices?
Yes, it is designed for all products compatible with the Modbus standard, so third-party Modbus RTU or ASCII devices can connect through the serial link.
How many devices can I connect to the serial link?
The module supports up to 32 devices on the Modbus serial link, as specified in the technical data.
What power supply does the TSXETG100 require?
It requires a 24 V DC rated supply voltage. It also supports PoE IEEE 802.3af as a power supply device option.
How do I diagnose communication problems?
Use the seven LEDs for link and activity status, and access the predefined web pages for diagnostics on Ethernet and Modbus links, including connected device lists and register values.
