Comprehensive Product Summary – EDAM‑4255 Ethernet I/O Module

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### 1. Product Overview

Product Name: EDAM‑4255
Model: L‑4255
Series: EDAM‑4200 Series – Digital I/O Ethernet Modules
Article Number: L‑4255
Manufacturer: Inlog Technology Co., Ltd. (www.inlog.com.tw)

The EDAM‑4255 is a high‑density, mixed digital input/output (DIO) module designed for industrial data acquisition and control applications over Ethernet networks. It integrates eight isolated digital input channels and eight isolated digital output channels within a compact, rugged enclosure. The module supports Modbus/TCP and UDP protocols, enabling seamless integration with SCADA, HMI, and PLC systems. Dual RJ‑45 ports with built‑in Ethernet switching allow daisy‑chain network topologies with auto‑bypass protection, ensuring continuous communication even if a module loses power.

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### 2. Key Features

- Dual Ethernet Ports: Two 10/100Base‑T (RJ‑45) ports with integrated switch for daisy‑chain connectivity.
- Auto‑Bypass Protection: Maintains network continuity within ~1 s after power loss on a module.
- 8 × Digital Inputs (DI): Isolated single‑ended channels supporting both dry and wet contact modes.
- 8 × Digital Outputs (DO): Isolated open‑drain (P‑MOSFET) outputs, 10–30 V DC, 750 mA max per channel.
- High Isolation: 3750 Vrms optical isolation between channels and logic circuitry.
- Industrial Protocols: Full Modbus/TCP and UDP/IP support for open connectivity.
- Advanced Output Control: Supports pulse output, high/low delay, and Auto‑Off (monostable) modes.
- DIO Synchronization: Mirrors local DI states to local or remote DO channels for distributed control.
- Watchdog & Safe Values: Dual watchdog (module + host) with programmable safe and power‑on values.
- Power Flexibility: Operates from unregulated +10 V DC to +30 V DC industrial supplies.
- Compact Form Factor: 130 × 96 × 26 mm DIN‑rail or wall‑mountable housing.
- Software Integration: Supported by Inlog’s EDAM Utility, Modbus OPC Server, DLL, and ActiveX controls.
- Web Server: Built‑in HTTP interface for remote monitoring and control via standard browsers.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| Ethernet Interface | 2 × RJ‑45 ports, 10/100 Base‑T (IEEE 802.3/802.3u) |
| Protocols Supported | Modbus/TCP, UDP, ICMP, ARP |
| Digital Inputs (DI) | 8 channels, isolated single‑ended |
| DI Type | Dry or Wet contact (selectable) |
| Dry Contact Logic | Logic 0 = closed to GND; Logic 1 = open |
| Wet Contact Logic | Logic 1 (active) = +5 V to +30 V DC max; Logic 0 (inactive) = +2 V DC max |
| Input Impedance | 2 kΩ (wet contact) |
| Counter Mode | 300 Hz software counter, 32‑bit + 1‑bit overflow |
| Optical Isolation | 3750 Vrms between field and logic |
| Digital Outputs (DO) | 8 channels, isolated open‑drain (P‑MOSFET) |
| Load Voltage Range | +10 V DC to +30 V DC |
| Load Current | 750 mA max per channel (short‑circuit protected) |
| Pulse Output Frequency | Up to 300 Hz per channel |
| Power Supply | +10 V DC to +30 V DC (unregulated) |
| Power Consumption | 3.6 W typical |
| Isolation Protection | 3750 Vrms optical isolation |
| Indicators | Power LED, Link/Activity LEDs, DI/DO status LEDs |
| Dimensions (W × H × D) | 130 mm × 96 mm × 26 mm |
| Mounting | DIN‑rail or wall mount |
| Operating Temperature | −10 °C to +70 °C |
| Storage Temperature | −25 °C to +85 °C |
| Humidity | 5 % to 95 % RH, non‑condensing |
| Cabling | UTP Cat 5 or higher, max 100 m per segment |
| Enclosure | Industrial‑grade plastic housing |

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### 4. Functionality

Operation Principle:
The EDAM‑4255 acts as a remote digital I/O node on an Ethernet network. It exchanges data with supervisory systems using Modbus/TCP or UDP frames. Each DI channel senses external contact or voltage signals, while each DO channel drives external loads such as relays, solenoids, or indicators.

Use Cases & Applications:
- Factory automation and process control
- Building management and HVAC systems
- Remote equipment monitoring
- Distributed I/O for PLC or SCADA systems
- Energy management and environmental monitoring
- Machine status and alarm indication

Compatibility:
Fully interoperable with any Modbus/TCP‑compliant controller, HMI, or SCADA software. Supported by Inlog’s OPC server, Windows utility, and programming interfaces (DLL, ActiveX).

Communication Modes:
- TCP/IP: Deterministic Modbus/TCP communication for command/response operations.
- UDP: Broadcast or point‑to‑point data streaming to up to 8 hosts for real‑time monitoring.

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### 5. Components & Accessories

Included in Package:
- EDAM‑4255 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 5e 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: Dual RJ‑45 ports with link/activity LEDs

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### 6. Installation & Setup

Power Requirements:
Supply unregulated +10 V DC to +30 V DC (typical 24 V DC). Ripple ≤ 200 mV p‑p. Use ≥ 2 mm² wiring for power terminals.

Mounting Options:
DIN‑rail or wall‑mount installation. Ensure adequate ventilation and avoid corrosive environments.

Network Configuration:
Each module must have a unique IP address. Factory defaults:
- IP = 10.0.0.1
- Subnet Mask = 255.255.255.0
- Gateway = 10.0.0.1
- DHCP = Disabled

Initialization:
Use the rear‑panel INIT switch to enter configuration mode for IP and network settings. Alternatively, use the EDAM Utility software to assign IP, subnet, and gateway parameters.

Daisy‑Chain Wiring:
Connect modules in series using the two RJ‑45 ports. Maximum segment length = 100 m. Auto‑bypass ensures network continuity if a module loses power (effective up to 50 m between nodes).

LED Indicators:
- Power (Yellow): ON = Power applied
- Link (Green): ON = Ethernet link active
- COM (Green Blink): Data transmission/reception
- RJ‑45 LEDs: Yellow = Speed (100 Mbps); Green = Link status

Reset Function:
Front‑panel pushbutton reboots the module to power‑on state.

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### 7. Performance & Capabilities

- Data Rate: Up to 100 Mbps Ethernet throughput
- Response Time: Typically < 10 ms for Modbus/TCP transactions
- Counter Frequency: 300 Hz max (software counter)
- Pulse Output: 300 Hz max per DO channel
- Load Capacity: 750 mA per DO channel @ 30 V DC
- Isolation: 3750 Vrms channel‑to‑logic
- Power Consumption: 3.6 W typical
- Network Recovery: Auto‑bypass < 1 s after power loss

Functional Modes:
- Direct I/O: Standard ON/OFF control.
- Pulse Output Mode: Generates programmable pulse trains.
- High/Low Delay Mode: Adds configurable delay on rising/falling transitions.
- Auto‑Off Time Mode: Monostable output returning to safe state after preset time.
- DIO Synchronization: Mirrors DI patterns to local or remote DOs (match/mismatch latch modes).

Limitations:
- Daisy‑chain total cable length limited to 100 m per segment.
- Operating humidity < 95 % non‑condensing.
- Requires stable 24 V DC supply for reliable operation.

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### 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
- Environmental: Designed for industrial environments (−10 °C to +70 °C)
- EMC & Safety: Conforms to general industrial EMC and safety practices (no corrosive gases, ESD precautions recommended)
- Software Interfaces: Compatible with Inlog TCPDAQ DLL API and ActiveX Control for Visual Basic, Delphi, C++, and C# environments.

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### 9. Additional Information

Warranty:
1‑year limited warranty covering defects in materials and workmanship. Excludes damage from misuse, improper installation, or unauthorized repair.

Support & Maintenance:
- Free firmware and utility updates available at www.inlog.com.tw.
- Technical support via authorized distributors or Inlog service centers.
- Out‑of‑warranty repairs billed at cost of parts and labor.

Software Tools:
- EDAM Ethernet I/O Utility: Windows‑based configuration and monitoring tool.
- Modbus OPC Server: Integrates real‑time data with OPC‑compliant SCADA/HMI software.
- TCPDAQ DLL & ActiveX: APIs for custom application development in Visual Basic, Delphi, C++, and C#.

Web Interface:
Built‑in HTTP server allows remote monitoring of DI/DO status, counter values, and configuration parameters through standard web browsers (IE 5.5 or later).

Maintenance Recommendations:
- Periodically verify terminal tightness and cable integrity.
- Maintain clean, dry environment; avoid exposure to conductive dust or corrosive gases.
- Use ESD protection when handling modules in low‑humidity conditions (< 30 %).

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### Summary

The Inlog EDAM‑4255 is a robust, Ethernet‑enabled digital I/O module engineered for industrial automation networks requiring reliable, distributed control. With eight isolated inputs and eight high‑current MOSFET outputs, dual Ethernet ports for daisy‑chain topology, and comprehensive Modbus/TCP support, it provides flexible integration into modern SCADA and PLC systems. Advanced features such as DIO synchronization, programmable watchdogs, and multiple output modes enhance reliability and control precision. Compact, efficient, and standards‑compliant, the EDAM‑4255 is an ideal solution for scalable, Ethernet‑based data acquisition and control architectures.