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L-4251
2*Ethernet 10*DI 4*DO Modbus Module
315,00 EUR
including VAT 374.85 EUR
- Dual Ethernet Ports (RJ‑45):
Two 10/100 Base‑T interfaces with integrated switch enable daisy‑chain networking, simplifying wiring and reducing the need for external switches.
- Auto‑Bypass Protection:
Maintains network communication within 1 second of power loss on a module, ensuring uninterrupted data flow in chained configurations.
- Mixed I/O Configuration:
Combines 10 digital inputs, 4 digital outputs, and 2 hardware counters in a single compact unit, minimizing system footprint.
- High Isolation:
3750 Vrms optical isolation between I/O channels and logic circuitry for robust protection against electrical noise and surges.
- Modbus/TCP and UDP Support:
Fully compliant with Modbus/TCP protocol for open connectivity with PLCs, HMIs, and SCADA software. UDP mode allows broadcast of I/O data streams to up to 8 hosts simultaneously.
- Watchdog and Safe Value Functions:
Dual watchdog system (module and host) ensures fail‑safe operation. Outputs revert to predefined safe states upon communication loss or watchdog timeout.
- Power‑On Value Configuration:
User‑definable output states at startup or after reset, ensuring predictable system behavior.
- DIO Synchronization (Mirror Mode):
Enables automatic mirroring of digital input states to local or remote digital outputs, supporting both “match” and “mismatch” latch modes.
- Pulse and Delay Output Modes:
Each DO channel supports pulse generation, high/low delay timing, and auto‑off monostable operation for flexible control logic.
- Web Server Interface:
Built‑in HTTP server allows remote monitoring and control of I/O channels via standard web browsers.
- Software Integration:
Supported by Inlog’s EDAM Ethernet I/O Utility, TCPDAQ ActiveX controls, and DLL API for integration with Visual Basic, C++, Delphi, and SCADA systems.
Two 10/100 Base‑T interfaces with integrated switch enable daisy‑chain networking, simplifying wiring and reducing the need for external switches.
- Auto‑Bypass Protection:
Maintains network communication within 1 second of power loss on a module, ensuring uninterrupted data flow in chained configurations.
- Mixed I/O Configuration:
Combines 10 digital inputs, 4 digital outputs, and 2 hardware counters in a single compact unit, minimizing system footprint.
- High Isolation:
3750 Vrms optical isolation between I/O channels and logic circuitry for robust protection against electrical noise and surges.
- Modbus/TCP and UDP Support:
Fully compliant with Modbus/TCP protocol for open connectivity with PLCs, HMIs, and SCADA software. UDP mode allows broadcast of I/O data streams to up to 8 hosts simultaneously.
- Watchdog and Safe Value Functions:
Dual watchdog system (module and host) ensures fail‑safe operation. Outputs revert to predefined safe states upon communication loss or watchdog timeout.
- Power‑On Value Configuration:
User‑definable output states at startup or after reset, ensuring predictable system behavior.
- DIO Synchronization (Mirror Mode):
Enables automatic mirroring of digital input states to local or remote digital outputs, supporting both “match” and “mismatch” latch modes.
- Pulse and Delay Output Modes:
Each DO channel supports pulse generation, high/low delay timing, and auto‑off monostable operation for flexible control logic.
- Web Server Interface:
Built‑in HTTP server allows remote monitoring and control of I/O channels via standard web browsers.
- Software Integration:
Supported by Inlog’s EDAM Ethernet I/O Utility, TCPDAQ ActiveX controls, and DLL API for integration with Visual Basic, C++, Delphi, and SCADA systems.
Comprehensive Product Summary – EDAM‑4251 (L‑4251) 2×Ethernet 10×DI 4×DO Modbus Module
### 1. Product Overview
Product Name: EDAM‑4251
Model Number: L‑4251
Series: EDAM‑4200 Series – Digital I/O Ethernet Data Acquisition Modules
Article Number: L‑4251
Manufacturer: Inlog Technology Co., Ltd. (www.inlog.com.tw)
The EDAM‑4251 is an industrial‑grade, high‑density Ethernet I/O module designed for distributed data acquisition and control applications. It integrates 10 isolated digital inputs, 4 isolated digital outputs, and 2 high‑speed counter channels, all accessible via dual 10/100 Base‑T Ethernet ports supporting Modbus/TCP and UDP/IP communication. The module is part of Inlog’s EDAM‑4200 family, which provides modular, network‑ready I/O expansion for SCADA, HMI, and PLC systems.
The L‑4251 supports daisy‑chain Ethernet topology with auto‑bypass protection, ensuring network continuity even if a module loses power. It is engineered for industrial environments requiring reliable digital signal acquisition, event counting, and remote control over standard Ethernet infrastructure.
### 2. Key Features
- Dual Ethernet Ports (RJ‑45):
Two 10/100 Base‑T interfaces with integrated switch enable daisy‑chain networking, simplifying wiring and reducing the need for external switches.
- Auto‑Bypass Protection:
Maintains network communication within 1 second of power loss on a module, ensuring uninterrupted data flow in chained configurations.
- Mixed I/O Configuration:
Combines 10 digital inputs, 4 digital outputs, and 2 hardware counters in a single compact unit, minimizing system footprint.
- High Isolation:
3750 Vrms optical isolation between I/O channels and logic circuitry for robust protection against electrical noise and surges.
- Modbus/TCP and UDP Support:
Fully compliant with Modbus/TCP protocol for open connectivity with PLCs, HMIs, and SCADA software. UDP mode allows broadcast of I/O data streams to up to 8 hosts simultaneously.
- Watchdog and Safe Value Functions:
Dual watchdog system (module and host) ensures fail‑safe operation. Outputs revert to predefined safe states upon communication loss or watchdog timeout.
- Power‑On Value Configuration:
User‑definable output states at startup or after reset, ensuring predictable system behavior.
- DIO Synchronization (Mirror Mode):
Enables automatic mirroring of digital input states to local or remote digital outputs, supporting both “match” and “mismatch” latch modes.
- Pulse and Delay Output Modes:
Each DO channel supports pulse generation, high/low delay timing, and auto‑off monostable operation for flexible control logic.
- Web Server Interface:
Built‑in HTTP server allows remote monitoring and control of I/O channels via standard web browsers.
- Software Integration:
Supported by Inlog’s EDAM Ethernet I/O Utility, TCPDAQ ActiveX controls, and DLL API for integration with Visual Basic, C++, Delphi, and SCADA systems.
### 3. Technical Specifications
General:
- Interface: 2 × RJ‑45 Ethernet ports (10/100 Base‑T, IEEE 802.3/802.3u)
- Protocols: Modbus/TCP, UDP, ICMP, ARP
- Data Rate: Up to 100 Mbps
- Power Supply: +10 V DC to +30 V DC (unregulated)
- Power Consumption: 3.5 W typical
- Isolation Protection: 3750 Vrms optical isolation (DI/DO)
- Dimensions: 130 mm (L) × 96 mm (W) × 26 mm (H)
- Weight: Approx. 250 g (module only)
- Mounting: DIN‑rail or wall‑mount
- Material: Industrial‑grade ABS enclosure with aluminum baseplate
Environmental:
- Operating Temperature: –10 °C to +70 °C (14 °F to 158 °F)
- Storage Temperature: –25 °C to +85 °C (–13 °F to 185 °F)
- Humidity: 5 % to 95 % RH, non‑condensing
- Atmosphere: Free of corrosive gases
Digital Inputs (DI):
- Channels: 10 × isolated single‑ended (DI0 – DI9)
- Type: Dry contact (common ground)
- Logic Levels:
- Logic 0 (active): Close to GND
- Logic 1 (inactive): Open
- Counter Mode: Software counter, 300 Hz max (32‑bit + overflow)
- Isolation Voltage: 3750 Vrms
Digital Outputs (DO):
- Channels: 4 × isolated open‑collector (NPN) outputs (DO0 – DO3)
- Load Voltage: +5 V to +30 V DC
- Max Load Current: 500 mA per channel
- Pulse Output Frequency: Up to 300 Hz per channel
- Isolation Voltage: 3750 Vrms
Counter Inputs:
- Channels: 2 × hardware counters (C0 = DI10, C1 = DI11)
- Input Voltage: +5 V to +30 V DC (max 30 V)
- Logic Levels: Active = +5 V to +30 V; Inactive ≤ +2 V DC
- Input Impedance: 2 kΩ
- Max Frequency: 4.5 kHz
- Counter Range: 32‑bit (4,294,967,285 counts + overflow bit)
- Isolation: 3750 Vrms
Indicators:
- Power LED: Yellow – ON when powered
- Link/Activity LEDs: Green – Ethernet link and communication status
- I/O Status LEDs: 10 × DI, 4 × DO, 2 × Counter status indicators
### 4. Functionality
The EDAM‑4251 operates as a networked digital I/O node. It acquires discrete input signals, counts pulses, and drives digital outputs through Ethernet communication. The module can be accessed via Modbus/TCP commands or ASCII/UDP messages.
Typical Use Cases:
- Industrial automation and machine control
- Remote monitoring and data acquisition (DAQ)
- Event counting and frequency measurement
- Alarm and status indication systems
- Distributed I/O expansion for PLCs and SCADA
- Building automation and energy management
Compatibility:
- Works with any Modbus/TCP‑compliant controller or HMI/SCADA software (e.g., Wonderware, iFIX, Citect, LabVIEW).
- Supported by Inlog’s TCPDAQ ActiveX and DLL API for custom software integration.
- Web‑based monitoring via built‑in HTTP server.
### 5. Components & Accessories
Included Items:
- EDAM‑4251 module (assembled with DIN‑rail clip)
- Product CD (manuals, drivers, utilities)
- Panel mounting bracket
- Startup manual
Optional Accessories:
- External 24 V DC power supply
- Ethernet cables (Cat 5 or higher)
- Additional DIN‑rail mounting hardware
Connectors:
- Power: Screw terminals (+Vs, GND)
- I/O: Plug‑in screw terminal blocks (accepts #14 – #28 AWG wire)
- Ethernet: 2 × RJ‑45 ports (10/100 Base‑T, auto‑MDI/MDIX)
### 6. Installation & Setup
Power Requirements:
Supply +10 V DC to +30 V DC (unregulated, ripple ≤ 200 mV p‑p). Use 2 mm wire minimum for power terminals.
Mounting Options:
DIN‑rail mount (default) or panel mount using included bracket.
Network Configuration:
- Default IP Address: 10.0.0.1
- Subnet Mask: 255.255.255.0
- Gateway: 10.0.0.1
- DHCP: Disabled by default
- Web Server: Disabled by default
- Module ID: 01
- Password: 00000000
Initialization:
- Use the rear INIT switch to enter configuration mode for IP and network settings.
- Factory defaults can be restored via the EDAM Utility or ASCII command `$AAS1`.
Daisy‑Chain Limitations:
- Maximum segment length per 100 Base‑TX link: 100 m.
- With auto‑bypass active, total chain length should not exceed 100 m (e.g., 50 m + 50 m between modules).
LED Indicators:
- Power LED (Yellow): ON = Power OK
- Link LED (Green): ON = Ethernet connected; Blink = Data activity
### 7. Performance & Capabilities
- Digital Input Frequency: Up to 300 Hz (software counter)
- Hardware Counter Frequency: Up to 4.5 kHz
- Digital Output Switching: Up to 300 Hz pulse output
- Response Time: < 10 ms typical for Modbus commands
- Network Recovery: Auto‑bypass reconnect within 1 s after power loss
- Power Consumption: 3.5 W typical at 24 V DC
- Reliability: MTBF > 100,000 hours (estimated)
Limitations:
- Daisy‑chain distance limited to 100 m total per segment.
- Digital outputs limited to 500 mA per channel (max 30 V DC).
- Operating humidity below 30 % may require anti‑static precautions.
### 8. Standards & Compliance
- Ethernet Standards: IEEE 802.3 (10 Base‑T), IEEE 802.3u (100 Base‑TX)
- Communication Protocols: Modbus/TCP (Port 502), UDP (Ports 1025 & 5168), HTTP (Port 80)
- Electrical Isolation: 3750 Vrms optical isolation between I/O and logic
- Protection: Over‑voltage and reverse‑polarity protection on power input
- Environmental Compliance: Designed for industrial EMC environments (EN 61000‑6‑2/‑4 equivalent)
- Safety: Meets industrial low‑voltage and EMC requirements
- RoHS Compliant: Yes
### 9. Additional Information
Warranty: 1 year limited manufacturer warranty against defects in materials and workmanship. Covers repair or replacement of defective units under normal use.
Support & Maintenance:
- Technical support via Inlog website and authorized distributors.
- Firmware updates available through EDAM Utility software.
- User manuals, ActiveX controls, and DLL libraries provided on CD and online.
Software Tools:
- EDAM Ethernet I/O Utility: Graphical configuration and monitoring tool.
- TCPDAQ ActiveX Control: For integration with Visual Basic, Delphi, C++.
- TCPDAQ DLL API: Comprehensive function library for custom applications.
- Web Server Interface: Browser‑based I/O monitoring and control.
Maintenance Guidelines:
- Ensure clean, dry environment free of corrosive gases.
- Use anti‑static precautions when handling modules.
- Periodically verify tightness of terminal connections and Ethernet cables.
### Summary
The Inlog EDAM‑4251 (L‑4251) is a compact, high‑performance Ethernet I/O module engineered for industrial automation and remote data acquisition. With dual Ethernet ports, auto‑bypass network protection, and Modbus/TCP compatibility, it provides reliable, open‑standard connectivity for distributed control systems. Its combination of 10 digital inputs, 4 digital outputs, and 2 hardware counters makes it ideal for applications requiring event counting, signal monitoring, and output control in harsh industrial environments.
The module’s 3750 Vrms isolation, configurable safe values, and dual watchdog architecture ensure operational safety and resilience. Comprehensive software support—including Modbus drivers, ActiveX controls, and web interfaces—simplifies integration into existing automation networks.
In summary, the EDAM‑4251 delivers a robust, flexible, and cost‑effective solution for Ethernet‑based digital I/O expansion, combining industrial reliability with modern network connectivity.
### 1. Product Overview
Product Name: EDAM‑4251
Model Number: L‑4251
Series: EDAM‑4200 Series – Digital I/O Ethernet Data Acquisition Modules
Article Number: L‑4251
Manufacturer: Inlog Technology Co., Ltd. (www.inlog.com.tw)
The EDAM‑4251 is an industrial‑grade, high‑density Ethernet I/O module designed for distributed data acquisition and control applications. It integrates 10 isolated digital inputs, 4 isolated digital outputs, and 2 high‑speed counter channels, all accessible via dual 10/100 Base‑T Ethernet ports supporting Modbus/TCP and UDP/IP communication. The module is part of Inlog’s EDAM‑4200 family, which provides modular, network‑ready I/O expansion for SCADA, HMI, and PLC systems.
The L‑4251 supports daisy‑chain Ethernet topology with auto‑bypass protection, ensuring network continuity even if a module loses power. It is engineered for industrial environments requiring reliable digital signal acquisition, event counting, and remote control over standard Ethernet infrastructure.
### 2. Key Features
- Dual Ethernet Ports (RJ‑45):
Two 10/100 Base‑T interfaces with integrated switch enable daisy‑chain networking, simplifying wiring and reducing the need for external switches.
- Auto‑Bypass Protection:
Maintains network communication within 1 second of power loss on a module, ensuring uninterrupted data flow in chained configurations.
- Mixed I/O Configuration:
Combines 10 digital inputs, 4 digital outputs, and 2 hardware counters in a single compact unit, minimizing system footprint.
- High Isolation:
3750 Vrms optical isolation between I/O channels and logic circuitry for robust protection against electrical noise and surges.
- Modbus/TCP and UDP Support:
Fully compliant with Modbus/TCP protocol for open connectivity with PLCs, HMIs, and SCADA software. UDP mode allows broadcast of I/O data streams to up to 8 hosts simultaneously.
- Watchdog and Safe Value Functions:
Dual watchdog system (module and host) ensures fail‑safe operation. Outputs revert to predefined safe states upon communication loss or watchdog timeout.
- Power‑On Value Configuration:
User‑definable output states at startup or after reset, ensuring predictable system behavior.
- DIO Synchronization (Mirror Mode):
Enables automatic mirroring of digital input states to local or remote digital outputs, supporting both “match” and “mismatch” latch modes.
- Pulse and Delay Output Modes:
Each DO channel supports pulse generation, high/low delay timing, and auto‑off monostable operation for flexible control logic.
- Web Server Interface:
Built‑in HTTP server allows remote monitoring and control of I/O channels via standard web browsers.
- Software Integration:
Supported by Inlog’s EDAM Ethernet I/O Utility, TCPDAQ ActiveX controls, and DLL API for integration with Visual Basic, C++, Delphi, and SCADA systems.
### 3. Technical Specifications
General:
- Interface: 2 × RJ‑45 Ethernet ports (10/100 Base‑T, IEEE 802.3/802.3u)
- Protocols: Modbus/TCP, UDP, ICMP, ARP
- Data Rate: Up to 100 Mbps
- Power Supply: +10 V DC to +30 V DC (unregulated)
- Power Consumption: 3.5 W typical
- Isolation Protection: 3750 Vrms optical isolation (DI/DO)
- Dimensions: 130 mm (L) × 96 mm (W) × 26 mm (H)
- Weight: Approx. 250 g (module only)
- Mounting: DIN‑rail or wall‑mount
- Material: Industrial‑grade ABS enclosure with aluminum baseplate
Environmental:
- Operating Temperature: –10 °C to +70 °C (14 °F to 158 °F)
- Storage Temperature: –25 °C to +85 °C (–13 °F to 185 °F)
- Humidity: 5 % to 95 % RH, non‑condensing
- Atmosphere: Free of corrosive gases
Digital Inputs (DI):
- Channels: 10 × isolated single‑ended (DI0 – DI9)
- Type: Dry contact (common ground)
- Logic Levels:
- Logic 0 (active): Close to GND
- Logic 1 (inactive): Open
- Counter Mode: Software counter, 300 Hz max (32‑bit + overflow)
- Isolation Voltage: 3750 Vrms
Digital Outputs (DO):
- Channels: 4 × isolated open‑collector (NPN) outputs (DO0 – DO3)
- Load Voltage: +5 V to +30 V DC
- Max Load Current: 500 mA per channel
- Pulse Output Frequency: Up to 300 Hz per channel
- Isolation Voltage: 3750 Vrms
Counter Inputs:
- Channels: 2 × hardware counters (C0 = DI10, C1 = DI11)
- Input Voltage: +5 V to +30 V DC (max 30 V)
- Logic Levels: Active = +5 V to +30 V; Inactive ≤ +2 V DC
- Input Impedance: 2 kΩ
- Max Frequency: 4.5 kHz
- Counter Range: 32‑bit (4,294,967,285 counts + overflow bit)
- Isolation: 3750 Vrms
Indicators:
- Power LED: Yellow – ON when powered
- Link/Activity LEDs: Green – Ethernet link and communication status
- I/O Status LEDs: 10 × DI, 4 × DO, 2 × Counter status indicators
### 4. Functionality
The EDAM‑4251 operates as a networked digital I/O node. It acquires discrete input signals, counts pulses, and drives digital outputs through Ethernet communication. The module can be accessed via Modbus/TCP commands or ASCII/UDP messages.
Typical Use Cases:
- Industrial automation and machine control
- Remote monitoring and data acquisition (DAQ)
- Event counting and frequency measurement
- Alarm and status indication systems
- Distributed I/O expansion for PLCs and SCADA
- Building automation and energy management
Compatibility:
- Works with any Modbus/TCP‑compliant controller or HMI/SCADA software (e.g., Wonderware, iFIX, Citect, LabVIEW).
- Supported by Inlog’s TCPDAQ ActiveX and DLL API for custom software integration.
- Web‑based monitoring via built‑in HTTP server.
### 5. Components & Accessories
Included Items:
- EDAM‑4251 module (assembled with DIN‑rail clip)
- Product CD (manuals, drivers, utilities)
- Panel mounting bracket
- Startup manual
Optional Accessories:
- External 24 V DC power supply
- Ethernet cables (Cat 5 or higher)
- Additional DIN‑rail mounting hardware
Connectors:
- Power: Screw terminals (+Vs, GND)
- I/O: Plug‑in screw terminal blocks (accepts #14 – #28 AWG wire)
- Ethernet: 2 × RJ‑45 ports (10/100 Base‑T, auto‑MDI/MDIX)
### 6. Installation & Setup
Power Requirements:
Supply +10 V DC to +30 V DC (unregulated, ripple ≤ 200 mV p‑p). Use 2 mm wire minimum for power terminals.
Mounting Options:
DIN‑rail mount (default) or panel mount using included bracket.
Network Configuration:
- Default IP Address: 10.0.0.1
- Subnet Mask: 255.255.255.0
- Gateway: 10.0.0.1
- DHCP: Disabled by default
- Web Server: Disabled by default
- Module ID: 01
- Password: 00000000
Initialization:
- Use the rear INIT switch to enter configuration mode for IP and network settings.
- Factory defaults can be restored via the EDAM Utility or ASCII command `$AAS1`.
Daisy‑Chain Limitations:
- Maximum segment length per 100 Base‑TX link: 100 m.
- With auto‑bypass active, total chain length should not exceed 100 m (e.g., 50 m + 50 m between modules).
LED Indicators:
- Power LED (Yellow): ON = Power OK
- Link LED (Green): ON = Ethernet connected; Blink = Data activity
### 7. Performance & Capabilities
- Digital Input Frequency: Up to 300 Hz (software counter)
- Hardware Counter Frequency: Up to 4.5 kHz
- Digital Output Switching: Up to 300 Hz pulse output
- Response Time: < 10 ms typical for Modbus commands
- Network Recovery: Auto‑bypass reconnect within 1 s after power loss
- Power Consumption: 3.5 W typical at 24 V DC
- Reliability: MTBF > 100,000 hours (estimated)
Limitations:
- Daisy‑chain distance limited to 100 m total per segment.
- Digital outputs limited to 500 mA per channel (max 30 V DC).
- Operating humidity below 30 % may require anti‑static precautions.
### 8. Standards & Compliance
- Ethernet Standards: IEEE 802.3 (10 Base‑T), IEEE 802.3u (100 Base‑TX)
- Communication Protocols: Modbus/TCP (Port 502), UDP (Ports 1025 & 5168), HTTP (Port 80)
- Electrical Isolation: 3750 Vrms optical isolation between I/O and logic
- Protection: Over‑voltage and reverse‑polarity protection on power input
- Environmental Compliance: Designed for industrial EMC environments (EN 61000‑6‑2/‑4 equivalent)
- Safety: Meets industrial low‑voltage and EMC requirements
- RoHS Compliant: Yes
### 9. Additional Information
Warranty: 1 year limited manufacturer warranty against defects in materials and workmanship. Covers repair or replacement of defective units under normal use.
Support & Maintenance:
- Technical support via Inlog website and authorized distributors.
- Firmware updates available through EDAM Utility software.
- User manuals, ActiveX controls, and DLL libraries provided on CD and online.
Software Tools:
- EDAM Ethernet I/O Utility: Graphical configuration and monitoring tool.
- TCPDAQ ActiveX Control: For integration with Visual Basic, Delphi, C++.
- TCPDAQ DLL API: Comprehensive function library for custom applications.
- Web Server Interface: Browser‑based I/O monitoring and control.
Maintenance Guidelines:
- Ensure clean, dry environment free of corrosive gases.
- Use anti‑static precautions when handling modules.
- Periodically verify tightness of terminal connections and Ethernet cables.
### Summary
The Inlog EDAM‑4251 (L‑4251) is a compact, high‑performance Ethernet I/O module engineered for industrial automation and remote data acquisition. With dual Ethernet ports, auto‑bypass network protection, and Modbus/TCP compatibility, it provides reliable, open‑standard connectivity for distributed control systems. Its combination of 10 digital inputs, 4 digital outputs, and 2 hardware counters makes it ideal for applications requiring event counting, signal monitoring, and output control in harsh industrial environments.
The module’s 3750 Vrms isolation, configurable safe values, and dual watchdog architecture ensure operational safety and resilience. Comprehensive software support—including Modbus drivers, ActiveX controls, and web interfaces—simplifies integration into existing automation networks.
In summary, the EDAM‑4251 delivers a robust, flexible, and cost‑effective solution for Ethernet‑based digital I/O expansion, combining industrial reliability with modern network connectivity.
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