Introduction

The Schneider TM4ES4 Communication Module is a powerful Ethernet expansion solution from the Modicon TM4 family, designed to enhance networking capability for industrial automation systems. Featuring four RJ45 Ethernet ports, it enables flexible communication architectures for Modicon M241 and M251 controllers, supporting efficient integration of HMIs, distributed devices, and industrial networks.

Developed for machine builders, OEM manufacturers, and automation professionals, the TM4ES4 combines reliable Ethernet connectivity, compact modular construction, and broad protocol support. Its ability to expand controller communication capacity makes it a practical choice for scalable machine automation projects requiring improved connectivity and system flexibility.

Technical Specifications

Parameter	Specification
Brand	Schneider Electric
Model Number	TM4ES4
Product Type	Communication Module
Product Range	Modicon TM4
Module Type	Ethernet Switch / Network Expansion Module
Compatible Controllers	Modicon M241 / M251
Ethernet Ports	4 × RJ45
Communication Standard	Ethernet
Ethernet Speed	10/100 Mbit/s
Ethernet Type	10Base-T / 100Base-TX
Auto Negotiation	Supported
Auto Crossover	MDI / MDIX
Supported Protocols	Ethernet/IP, Modbus TCP, TCP, UDP, SNMP
Web Services	Web Server, FTP, DHCP Client
Power Consumption	360 mA at 5 VDC
Power Dissipation	2.5 W
Mounting Type	DIN Rail Mounting
Connection Type	RJ45 Ethernet Connector
Functional Ground Connection	Screw Terminal
Protection Rating	IP20
Operating Temperature	-10...55°C
Storage Temperature	-25...70°C
Dimensions (W × H × D)	Approx. 25 × 90 × 90 mm
Weight	Approx. 125 g

Recommended Companion Models

Model	Product Name
TM241CE40T	Schneider Modicon M241 Ethernet Logic Controller
TM251MESE	Schneider Modicon M251 Ethernet Logic Controller
TM3BCEIP	Schneider Modicon TM3 Ethernet/IP Bus Coupler
TM4PDPS1	Schneider Modicon TM4 Profibus DP Communication Module

Frequently Selected Alternatives

Model	Product Name
TM4PDPS1	Schneider Modicon TM4 Profibus DP Module
BMXNOC0401	Schneider Modicon M340 Ethernet Communication Module
BMXNOR0200H	Schneider Modicon M340 Ethernet Module
TM3BCEIP	Schneider Modicon TM3 Ethernet/IP Interface Module

Where It Excels in Industrial Use

• Industrial Ethernet Network Expansion
The TM4ES4 provides four Ethernet ports for Modicon controller systems, enabling additional network connectivity for industrial automation devices, HMIs, remote I/O systems, and supervisory platforms. It can operate as an Ethernet expansion interface or an unmanaged Ethernet switch within automation architectures.

• Machine Networking and Data Exchange
Designed for Modicon M241 and M251 controllers, the TM4ES4 supports Ethernet-based communication environments, allowing efficient data exchange between controllers, devices, and industrial networks using protocols such as Modbus TCP and Ethernet/IP.

• Distributed Automation System Integration
The module is suitable for OEM machinery, production lines, and automated systems that require additional Ethernet connections without replacing existing controllers, helping improve machine scalability and communication flexibility.

• Compact Control Cabinet Networking
With a slim DIN rail mounting design and four RJ45 communication ports, the TM4ES4 simplifies Ethernet wiring inside control panels while maintaining a compact installation footprint.

Key Strengths at a Glance

• Four-Port Ethernet Switching Capability
The TM4ES4 integrates four RJ45 Ethernet ports supporting 10Base-T and 100Base-TX communication with auto-negotiation, providing flexible industrial network expansion.

• Multiple Industrial Communication Protocols
The module supports Ethernet/IP, Modbus TCP, TCP, UDP, SNMP, and other Ethernet communication services, making it adaptable for modern automation environments.

• Flexible Controller Compatibility
The TM4ES4 is designed for Modicon M241 and M251 logic controllers, providing an additional Ethernet interface or standalone Ethernet switch functionality depending on the system configuration.

• Reliable Industrial Network Performance
Supporting Ethernet communication speeds up to 100 Mbit/s, the module provides stable connectivity for machine control networks, device communication, and automation data management.

Technical FAQs

1. What type of module is the Schneider TM4ES4?
The Schneider TM4ES4 is a Modicon TM4 Ethernet communication module that functions as a four-port unmanaged Ethernet switch and network expansion module.

2. How many Ethernet ports does the TM4ES4 provide?
The TM4ES4 provides four RJ45 Ethernet communication ports for industrial network connections.

3. Which Schneider controllers are compatible with the TM4ES4?
The TM4ES4 is compatible with Modicon M241 and M251 logic controllers.

4. What Ethernet communication speed does the TM4ES4 support?
The TM4ES4 supports 10Base-T and 100Base-TX Ethernet communication with automatic negotiation.

5. Which communication protocols are supported by the TM4ES4?
The module supports Ethernet/IP, Modbus TCP, TCP, UDP, SNMP, FTP, DHCP client functions, and related Ethernet communication services.

6. Can the TM4ES4 work as an Ethernet switch?
Yes, the TM4ES4 can operate as an Ethernet switch to connect multiple Ethernet devices within an industrial automation network.

7. Does the TM4ES4 require separate Ethernet crossover cables?
No, the module supports MDI/MDIX auto-crossover functionality, eliminating the need for dedicated crossover cables.

8. How is the TM4ES4 configured?
The TM4ES4 is integrated and configured through Schneider Electric EcoStruxure Machine Expert when used with compatible Modicon controllers.

9. What is the maximum communication rate of the TM4ES4?
The TM4ES4 supports Ethernet transmission rates up to 100 Mbit/s.

10. Can multiple TM4ES4 modules be installed in one system?
Yes, the TM4 expansion bus supports multiple expansion modules within specified system limits depending on controller configuration.

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