Comprehensive Product Summary – EX9051A‑MTCP Ethernet I/O Module

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### 1. Product Overview
Product Name: EX9051A‑MTCP
Model: EX9051A‑MTCP
Series: EX9000‑MTCP Ethernet I/O Series
Article Number: EX9051A‑MTCP
Manufacturer: TOPSCCC / ExpertDAQ (Taiwan)
Product Type: Modbus TCP/IP to isolated digital I/O module with counters and frequency inputs
Manual Reference: *EX9000‑MTCP User’s Manual, Ethernet I/O Version 2.0 (June 1, 2016)*

The EX9051A‑MTCP is a compact, high‑density Ethernet‑based digital I/O module designed for industrial data acquisition and control. It integrates 12 isolated digital inputs (dry contact), 2 digital outputs (open‑collector NPN type), and 2 high‑speed counter/frequency channels. The module communicates via Modbus/TCP over standard 10/100 Mbps Ethernet and supports both TCP and UDP protocols for flexible integration with SCADA, PLC, and HMI systems.

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### 2. Key Features
- Ethernet Connectivity: 10/100 Base‑T (IEEE 802.3/802.3u) interface with RJ‑45 connector.
- Protocol Support: Fully compliant with Modbus/TCP and UDP/IP for open industrial interoperability.
- I/O Configuration:
- 12 × digital inputs (dry contact, optically isolated)
- 2 × digital outputs (open‑collector NPN, isolated)
- 2 × counter/frequency inputs (up to 4.5 kHz)
- Isolation Protection: 3000 V DC optical isolation between I/O channels and logic.
- Smart Functions:
- Input latch and 32‑bit counter per DI channel
- Frequency measurement up to 4.5 kHz
- Pulse and delay output modes on DO channels
- Auto‑off timer and mirror (DI‑to‑DO) synchronization
- Web‑Enabled Monitoring: Built‑in web server for remote I/O status visualization and control.
- Software Integration: Supported by ExpertDAQ Windows Utility, ActiveX controls, and DLL API for custom application development.
- Industrial Design: DIN‑rail, wall, or stack mounting; ABS enclosure with LED indicators for power, link, and communication.
- Power Flexibility: Operates from unregulated +10 to +30 V DC with reverse‑polarity and over‑voltage protection.
- Reliability: Dual watchdog system (module and host) ensures fail‑safe operation and automatic recovery.

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### 3. Technical Specifications
Ethernet Interface
- Standards: 10 Base‑T IEEE 802.3 / 100 Base‑TX IEEE 802.3u
- Connector: RJ‑45 modular jack
- Cable: UTP Cat 5 or higher
- Data Rate: up to 100 Mbps
- Supported Protocols: Modbus/TCP, UDP/IP
- Isolation (Ethernet): 1500 V DC

Power Requirements
- Supply Voltage: +10 to +30 V DC (unregulated)
- Typical Consumption: 2 W
- Protection: Over‑voltage and reverse‑polarity

Digital Inputs (DI)
- Channels: 12 (single‑ended, common source)
- Type: Dry contact (jumper‑selectable)
- Logic 0: Closed to GND
- Logic 1: Open circuit
- Isolation: 3000 V DC optical
- Counter Mode: 32‑bit counter + overflow bit
- Max Count: 4,294,967,285
- Frequency Range: 0.3 – 4500 Hz (frequency mode)
- Counter Frequency: up to 1 kHz typical

Digital Outputs (DO)
- Channels: 2 (sink type, open‑collector NPN)
- Load Voltage: up to 30 V DC
- Load Current: 500 mA max per channel
- Isolation: 3000 V DC optical
- Functions: Direct output, pulse output, delay output

Counter/Frequency Inputs
- Channels: 2 differential isolated inputs
- Frequency Range: 0.3 – 4500 Hz
- Modes: Counter or frequency measurement
- Isolation: 3000 V DC

Environmental
- Operating Temperature: –25 °C to +75 °C
- Storage Temperature: –25 °C to +85 °C
- Humidity: 5 – 95 % RH (non‑condensing)
- Atmosphere: No corrosive gases

Mechanical
- Enclosure: ABS plastic with captive mounting hardware
- Mounting: DIN‑rail, wall, or stack mount
- Terminal Block: Plug‑in screw type, accepts 0.5 – 2.5 mm² (1 × #12 AWG or 2 × #14–22 AWG)
- LED Indicators: Power, CPU, Link/Activity, 10/100 Mbps, Tx/Rx

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### 4. Functionality
The EX9051A‑MTCP serves as a distributed Ethernet I/O node that converts field digital signals into Modbus/TCP data accessible over standard networks. Each input can operate as a discrete signal, latched event, or counter. The two counter/frequency channels allow pulse counting or frequency measurement for flow meters, encoders, or speed sensors. Outputs can be driven directly or configured for timed pulses and delays, enabling simple control logic without a PLC.

Typical Applications
- Remote digital signal acquisition and control
- Machine and process monitoring
- Counter/frequency measurement (flow, RPM, event counting)
- Alarm and event logging systems
- Integration with SCADA/HMI via Modbus/TCP
- Distributed I/O expansion for PLCs or embedded controllers

Compatibility
- Works with any Modbus/TCP‑compliant master (PLC, SCADA, DCS, HMI)
- Supported by ExpertDAQ Windows Utility, ActiveX, and DLL API
- Accessible via standard web browsers for monitoring

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### 5. Components & Accessories
Included Items
- EX9051A‑MTCP module
- Plug‑in terminal block connectors
- DIN‑rail mounting clip
- User manual (digital)

Optional Accessories
- 24 V DC industrial power supply
- Ethernet cables (Cat 5e/6)
- ExpertDAQ configuration utility (downloadable)

Connectors
- RJ‑45 Ethernet port
- Screw terminals for power (+Vs, GND)
- Terminal block for DI, DO, and counter inputs

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### 6. Installation & Setup
Requirements
- Host PC: IBM‑compatible 486 CPU (minimum Pentium recommended)
- OS: Windows 95/98/2000/NT 4.0 (SP3/SP4)/XP or later
- Memory: ≥ 32 MB RAM, 20 MB free disk space
- Network: 10/100 Mbps Ethernet card and hub
- Power: +10 to +30 V DC supply

Mounting Options
- DIN‑rail, wall, or stack mounting supported.
- Ensure adequate ventilation and avoid high‑energy wiring proximity.

Wiring Guidelines
- Use continuous wire lengths (0.5–2.5 mm²).
- Separate input and output wiring to minimize interference.
- Avoid sharp bends and high‑voltage cables nearby.

Configuration
- Default IP: 10.0.0.1   Subnet: 255.0.0.0   Gateway: 10.0.0.1
- DHCP: Disabled by default (can be enabled)
- Web Server: Disabled by default (enable via utility)
- Module ID: 00 (default)
- Password: 00000000 (default)

Network Ports
| Protocol | Port | Description |
|-----------|------|-------------|
| TCP | 502 | Modbus/TCP server |
| UDP | 1025 | ASCII command interface |
| UDP | 5168 | Event/Stream data |
| TCP | 80 | HTTP web server |

Setup Procedure
1. Connect power and Ethernet cables.
2. Assign IP address via ExpertDAQ Utility or DHCP.
3. Configure DI/DO modes, counters, and stream/event settings.
4. Verify communication using Modbus/TCP or web interface.

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### 7. Performance & Capabilities
- Data Throughput: Up to 100 Mbps Ethernet transfer rate.
- Counter Resolution: 32‑bit (4,294,967,285 counts + overflow).
- Frequency Measurement: 0.3 – 4500 Hz max.
- Pulse Output: Programmable low/high width (0.5 ms units).
- Response Time: Typical < 10 ms for Modbus requests.
- Power Consumption: Approx. 2 W at 24 V DC.
- Reliability: Dual watchdog system (module and host) ensures fail‑safe operation.
- Limitations: Digital inputs are dry contact only (no wet contact voltage sensing). Maximum load per DO 500 mA.

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### 8. Standards & Compliance
- Communication Standards: IEEE 802.3 / 802.3u Ethernet
- Protocol: Modbus/TCP (Industrial Standard)
- Isolation: 3000 V DC I/O to logic, 1500 V DC Ethernet port
- Safety & EMC: Designed for industrial environments with optical isolation and surge protection
- Environmental: RoHS compliant materials, non‑corrosive operation
- Firmware: Supports Modbus function codes 01, 02, 03, 04, 05, 06, 0F, 10 for coil and register access

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### 9. Additional Information
Warranty & Support
- Standard manufacturer warranty (typically 1 year) covering defects in materials and workmanship.
- Technical support and firmware updates available via [www.topsccc.com.tw](http://www.topsccc.com.tw).

Maintenance
- Periodically inspect terminal connections and clean with anti‑static precautions.
- Maintain ambient humidity > 30 % to reduce static discharge risk.
- Firmware updates can be applied via ExpertDAQ Utility or web interface.

Software Tools
- ExpertDAQ Ethernet I/O Utility: Graphical configuration and monitoring tool.
- ActiveX Control (TCPDAQ.OCX): For Visual Basic, Delphi, C++ integration.
- DLL API (TCPDAQ.DLL): Comprehensive function library for TCP/UDP communication, stream/event handling, and Modbus operations.
- Web Server: Built‑in HTTP interface for real‑time I/O monitoring and control.

Firmware Functions (Highlights)
- Modbus register mapping for DI/DO status, counters, pulse widths, and modes.
- ASCII command set for direct UDP control (e.g., $aa6, #aa1ndd, $aaEcn).
- Host watchdog commands (~AA3EVVV) for safe output state management.
- Power‑on and safe value configuration (~AA4V, ~AA5V).

Reliability Features
- Module Watchdog: Hardware reset circuit to recover from system faults.
- Host Watchdog: Software timer monitors communication with host; on timeout, outputs switch to safe state.
- Power‑On Value: User‑defined default DO state at startup.
- Safe Value: Fail‑safe DO state on communication loss.

Maintenance & Calibration
- Digital I/O requires no calibration.
- Firmware and configuration backup via utility software.

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### Summary
The EX9051A‑MTCP is a robust, Ethernet‑enabled digital I/O module engineered for industrial automation and remote data acquisition. Combining 12 isolated dry‑contact inputs, 2 open‑collector outputs, and 2 high‑speed counter/frequency channels, it offers a compact solution for distributed control systems. Its Modbus/TCP compliance, 3000 V isolation, and dual watchdog architecture ensure reliable operation in demanding environments. With comprehensive software support (ActiveX, DLL, and web server), the EX9051A‑MTCP integrates seamlessly into modern Ethernet‑based SCADA and PLC networks, providing high‑performance, cost‑effective remote I/O control.