New Product Launch | IO-Link Master Modules with Modbus-TCP Protocol
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2025-04-25In today's rapidly evolving industrial automation landscape, on-site device connectivity demands are becoming increasingly diverse.
Traditional I/O wiring methods often result in complex cabling, tedious debugging, and poor scalability—factors that hinder system flexibility and efficiency.
To address these industry challenges, we are introducing two new IO-Link master modules based on the Modbus-TCP protocol: ELMT-8IOL-L001 and ELMT-8IOL-L04B. From interface configuration to network communication, these modules offer a more efficient, flexible, and intelligent connection solution for industrial environments.
Understanding Modbus-TCP: A Mainstream Industrial Communication Protocol
Modbus-TCP is an Ethernet-based version of the Modbus protocol, widely used for communication among automation devices. Compared to traditional serial Modbus, it leverages the standard TCP/IP protocol stack to support multi-master communication, fast data transmission, and flexible topology—making it ideal for modern PLCs, I/O modules, and edge devices.
The ELMT series master modules are built on this protocol, enabling users to quickly exchange data with higher-level systems via standard Ethernet—no need for dedicated gateways, ensuring flexible deployment and easy maintenance.
Two Modules, Tailored to Your Needs
Within the same communication protocol framework, the L001 and L04B cater to different field requirements. Here's a comparison of their key features:
Key Product Highlights
High-Efficiency Communication
Both modules support Modbus-TCP protocol and feature dual M12 D-coded Ethernet ports (100 Mbps) to ensure stable communication with upper-level systems or PLCs. Integrated switching functionality supports daisy-chaining, reducing the need for switches.
Flexible Configuration
Each port's status can be controlled via PORT_H/PORT_L dip switches, allowing for convenient debugging and runtime optimization. They support both DHCP dynamic IP acquisition and static IP configuration (default range: 192.168.0.*), enabling seamless integration into existing networks.
Easy Maintenance and High Visibility
Each module is equipped with a clear LED indication system:
Industrial-Grade Reliability
The modules feature high-strength flame-retardant plastic housing and M12 industrial connectors. With IP67 protection, they operate reliably in harsh environments—humidity, dust, or vibration—within a temperature range of -20°C to 55°C.
User Benefits at a Glance
Customer Support & Service
For more information about SENTINEL products, please contact your sales representative or call 022-83726972. You can also visit our official website at www.sentinel-china.com. The site offers comprehensive product details, selection guides, CAD & Eplan files, configuration files, and tutorials—ensuring users can easily access everything they need.
Our professional technical team is always ready to provide tailored support and efficient after-sales service to ensure maximum customer satisfaction.
Traditional I/O wiring methods often result in complex cabling, tedious debugging, and poor scalability—factors that hinder system flexibility and efficiency.
To address these industry challenges, we are introducing two new IO-Link master modules based on the Modbus-TCP protocol: ELMT-8IOL-L001 and ELMT-8IOL-L04B. From interface configuration to network communication, these modules offer a more efficient, flexible, and intelligent connection solution for industrial environments.
Understanding Modbus-TCP: A Mainstream Industrial Communication Protocol
Modbus-TCP is an Ethernet-based version of the Modbus protocol, widely used for communication among automation devices. Compared to traditional serial Modbus, it leverages the standard TCP/IP protocol stack to support multi-master communication, fast data transmission, and flexible topology—making it ideal for modern PLCs, I/O modules, and edge devices.
The ELMT series master modules are built on this protocol, enabling users to quickly exchange data with higher-level systems via standard Ethernet—no need for dedicated gateways, ensuring flexible deployment and easy maintenance.
Two Modules, Tailored to Your Needs
Within the same communication protocol framework, the L001 and L04B cater to different field requirements. Here's a comparison of their key features:
| Feature | ELMT-8IOL-L001 | ELMT-8IOL-L04B |
|---|---|---|
| IO-Link Port Type | 8 A-class ports | 4 A-class + 4 B-class ports (support external power supply) |
| Power Management | Single supply (up to 8A) | Separate module power (UB) and load power (UL) |
| Current Distribution | C1-C4 / C5-C8: 4A each | C1-C2 / C5-C6: independent 4A |
| Protection Level | IP67, shock and vibration resistant | IP67, resin-encapsulated, highly corrosion-resistant |
| Typical Applications | Standard IO-Link centralized control | Hybrid scenarios, supports B-class IO-Link devices |
Key Product Highlights
High-Efficiency Communication
Both modules support Modbus-TCP protocol and feature dual M12 D-coded Ethernet ports (100 Mbps) to ensure stable communication with upper-level systems or PLCs. Integrated switching functionality supports daisy-chaining, reducing the need for switches.
Flexible Configuration
Each port's status can be controlled via PORT_H/PORT_L dip switches, allowing for convenient debugging and runtime optimization. They support both DHCP dynamic IP acquisition and static IP configuration (default range: 192.168.0.*), enabling seamless integration into existing networks.
Easy Maintenance and High Visibility
Each module is equipped with a clear LED indication system:
- Green Power LED: module power status
- Green/Red BUS LED: network connection and communication status
- Yellow STAT / Red ERR per port: real-time communication and fault indication
Industrial-Grade Reliability
The modules feature high-strength flame-retardant plastic housing and M12 industrial connectors. With IP67 protection, they operate reliably in harsh environments—humidity, dust, or vibration—within a temperature range of -20°C to 55°C.
User Benefits at a Glance
- Reduced Installation Costs: Simplified wiring structure reduces manual errors and shortens project delivery cycles
- Increased Operational Efficiency: Easy maintenance with a minimum cycle time of 2ms for fast response needs
- Future-Proof Expansion: Compliant with IO-Link V1.1, supporting 32-byte bidirectional data transfer and compatible with more sensors/actuators
Customer Support & Service
For more information about SENTINEL products, please contact your sales representative or call 022-83726972. You can also visit our official website at www.sentinel-china.com. The site offers comprehensive product details, selection guides, CAD & Eplan files, configuration files, and tutorials—ensuring users can easily access everything they need.
Our professional technical team is always ready to provide tailored support and efficient after-sales service to ensure maximum customer satisfaction.
