Comprehensive Product Summary – EX9486C‑W‑MTCP Wi‑Fi to Modbus Gateway

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### 1. Product Overview

Product Name: Wi‑Fi to Modbus Gateway
Model: EX9486C‑W‑MTCP
Series: EX94xxC Industrial Communication Converters
Article Number: EX9486C‑W‑MTCP
Manufacturer: TOPSCCC (Taiwan)
Version: 2.0 (Manual dated April 24, 2018)

The EX9486C‑W‑MTCP is an industrial‑grade Modbus RTU/ASCII to Wi‑Fi (Modbus TCP) converter designed to connect serial devices such as PLCs, sensors, and meters to wireless or Ethernet networks. It enables seamless integration of legacy serial equipment into modern IP‑based infrastructures, supporting both Modbus TCP and Modbus RTU/ASCII protocols. The device is powered by an ARM9 580 MHz 32‑bit CPU with 128 MB SRAM and 32 MB Flash memory, ensuring reliable performance in demanding industrial environments.

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### 2. Key Features

- Protocol Conversion:
Converts Modbus RTU/ASCII over RS‑232/422/485 to Modbus TCP over Wi‑Fi or Ethernet, enabling transparent communication between serial and IP‑based systems.

- Dual Network Interfaces:
Equipped with both a 10/100 Mbps Ethernet port and an IEEE 802.11 b/g/n Wi‑Fi interface for flexible connectivity.

- Wi‑Fi Standards & Security:
Supports IEEE 802.11 b/g/n with data rates up to 72.2 Mbps (20 MHz bandwidth). Includes WEP 64/128‑bit, WPA/WPA2‑Personal, AES, WPS 2.0, and WAPI encryption for secure wireless communication.

- Multi‑Master/Slave Support:
Handles up to 8 simultaneous TCP Masters and allows a serial Master to access up to 8 TCP Slaves concurrently.

- Web‑Based Configuration:
Integrated HTTP/HTTPS web server for configuration via standard browsers (IE, Chrome, Firefox). No proprietary software required.

- Flexible Operating Modes:
Operates as TCP Server, TCP Client, or UDP node. Supports both Infrastructure and Access Point (AP) Wi‑Fi modes.

- Industrial Design:
Compact, robust PVC housing with DIN‑rail mounting option. Designed for ‑20 °C to +70 °C operation and 10–95 % RH humidity.

- High Reliability:
Built‑in 1.5 kV magnetic isolation on Ethernet port and 15 kV ESD protection on all serial lines.

- Remote Firmware Update:
Firmware can be upgraded via Ethernet to maintain compatibility with evolving network standards.

- Dynamic IP Configuration:
DHCP client support simplifies network setup and management.

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### 3. Technical Specifications

Processor & Memory
- CPU: ARM9 580 MHz, 32‑bit architecture
- Memory: 128 MB SRAM
- Flash Storage: 32 MB

Wireless LAN (Wi‑Fi)
- Standard: IEEE 802.11 b/g/n
- Frequency Band: 2.4 GHz (2.3 – 2.5 GHz)
- Data Rate: 11/54/72.2 Mbps @ 20 MHz bandwidth
- Modulation: DSSS, OFDM
- Tx Power: 22 dBm (11b), 19 dBm (11g/n)
- Rx Sensitivity: −76 dBm @ 54 Mbps; −89.5 dBm @ 11 Mbps
- Range: Up to 100 m (open space)
- Antenna: 2 dBi dipole, RP‑SMA connector
- Security: WEP 64/128‑bit, AES, WPA/WPA2‑Personal, WPS 2.0, WAPI
- Network Modes: Infrastructure, Access Point (for setup)
- Configuration: HTTP browser interface
- Operating Modes: TCP Server, TCP Client, UDP

Ethernet Interface
- Connector: RJ‑45
- Speed: 10/100 Mbps (auto‑detect)
- Protocols: ARP, IP, ICMP, UDP, TCP, HTTP, DHCP, PPPoE, DDNS, NTP, FTP, Telnet
- Security: Setup password protection
- Isolation: 1.5 kV magnetic isolation

Serial Communication
- Ports:
- 1 × RS‑232 (DB9 male)
- 1 × RS‑422/485 (4‑pin terminal block)
- RS‑232 Signals: TxD, RxD, GND
- RS‑422 Signals: Tx+, Tx−, Rx+, Rx−
- RS‑485 Signals: Data+, Data−
- Baud Rate: 300 bps – 230.4 kbps
- Data Bits: 5, 6, 7, 8
- Stop Bits: 1, 2
- Parity: None, Even, Odd, Space, Mark
- Line Protection: 15 kV ESD

Power Requirements
- Input Voltage: 9 – 24 V DC
- Current Consumption: 200 mA @ 12 V DC
- Connector: Terminal block or DC jack

Environmental Conditions
- Operating Temperature: −20 °C – +70 °C
- Storage Temperature: −25 °C – +80 °C
- Humidity: 10 – 95 % RH (operating), 5 – 95 % RH (storage)

Regulatory Compliance
- Certifications: CE, FCC, RoHS

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### 4. Functionality

The EX9486C‑W‑MTCP functions as a protocol gateway, bridging Modbus RTU/ASCII serial devices with Modbus TCP/IP networks over Wi‑Fi or Ethernet. It encapsulates serial data into TCP/IP packets and transmits them wirelessly or via Ethernet, allowing remote access and control of serial equipment through standard Modbus TCP clients.

Supported Conversion Modes:
1. Modbus RTU/ASCII Slave → Modbus TCP Master
2. Modbus TCP Slave → Modbus RTU/ASCII Master
3. TCP to RTU Slave
4. TCP to ASCII Slave
5. RTU to TCP Slave
6. ASCII to TCP Slave
7. TCP Client to RTU Slave

Use Cases:
- Integrating legacy PLCs, meters, and sensors into SCADA or IoT systems.
- Remote monitoring and control of industrial automation equipment.
- Wireless data acquisition in manufacturing, utilities, and building automation.
- Bridging serial‑based instrumentation to cloud‑based monitoring platforms.

Compatibility:
- Works with Modbus TCP/IP servers and clients.
- Compatible with Windows 2000/2003/Vista/7/8/10 via included configuration utility.
- Supports standard web browsers for configuration (IE, Chrome, Firefox).

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### 5. Components & Accessories

Package Contents:
- 1 × EX9486C‑W‑MTCP Serial‑to‑Wi‑Fi Converter
- 1 × 2 dBi Dipole Antenna (RP‑SMA)
- 1 × CD (Operation Manual & Utility Software)
- Optional: DIN‑rail mounting kit and power adapter

Connectors:
- RS‑232: DB9 male
- RS‑422/485: 4‑pin terminal block
- Ethernet: RJ‑45
- Power: DC jack or terminal block
- Antenna: RP‑SMA

Pin Assignments:
- RS‑232: Pin 2 = RXD, Pin 3 = TXD, Pin 5 = GND
- RS‑422: Pin 1 = R−, Pin 2 = R+, Pin 3 = T−, Pin 4 = T+
- RS‑485: Pin 3 = D−, Pin 4 = D+

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### 6. Installation & Setup

Requirements:
- PC or notebook with Ethernet or Wi‑Fi adapter
- Wireless Access Point (for Infrastructure mode)
- 9–24 V DC power supply

Mounting Options:
- Desktop placement
- DIN‑rail mounting (optional kit)

Initial Configuration:
1. Power On: Connect power supply (9–24 V DC).
2. Default Mode: Device starts in Access Point (AP) mode with SSID “EXiot_XX:XX:XX:XX:XX:XX”.
3. Connect via Wi‑Fi: Use a PC or mobile device to connect to the SSID. Default password: `12345678`.
4. Access Web Interface: Open browser and enter default IP (e.g., 192.168.0.115).
5. Login Credentials: Username: `admin`, Password: `admin`.
6. Configure Network: Choose between Infrastructure or AP mode.
- In Infrastructure mode, connect to an existing Wi‑Fi AP and enable DHCP or assign a static IP.
7. Set Serial Parameters: Configure baud rate, parity, data bits, stop bits, and flow control.
8. Select Gateway Mode: Choose appropriate Modbus conversion mode (e.g., TCP→RTU Slave).
9. Save & Reboot: Apply settings and reboot device to activate configuration.

Reset Procedure:
If configuration becomes inaccessible, press and hold the reset button for > 25 seconds while powered on to restore factory defaults (AP mode).

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### 7. Performance & Capabilities

- Network Throughput: Up to 54 Mbps (802.11g) or 72.2 Mbps (802.11n, 20 MHz).
- Serial Throughput: Up to 230.4 kbps.
- Simultaneous Connections: Supports up to 8 TCP Masters and 8 TCP Slaves concurrently.
- Latency: Optimized for low‑latency Modbus communication over wireless networks.
- Range: Up to 100 m line‑of‑sight (Wi‑Fi).
- Reliability: Industrial‑grade ESD and isolation protection ensure stable operation in noisy environments.
- Efficiency: ARM9 processor provides fast protocol translation with minimal overhead.
- Limitations:
- Wireless and Ethernet interfaces cannot operate in the same subnet simultaneously.
- Only one serial port active at a time (RS‑232 or RS‑422/485 selectable).

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### 8. Standards & Compliance

- Wireless Standards: IEEE 802.11 b/g/n
- Network Protocols: ARP, IP, ICMP, UDP, TCP, HTTP, DHCP, PPPoE, DDNS, NTP, FTP, Telnet
- Modbus Protocols: Modbus RTU, Modbus ASCII, Modbus TCP
- Security Standards: WPA/WPA2‑Personal, WEP 64/128‑bit, AES, WPS 2.0, WAPI
- Electrical Protection: 1.5 kV magnetic isolation (Ethernet), 15 kV ESD (serial lines)
- Environmental Compliance: RoHS
- Regulatory Approvals: CE, FCC

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### 9. Additional Information

Warranty & Support:
TOPSCCC provides standard manufacturer warranty covering defects in materials and workmanship. Technical support and firmware updates are available through the official website (www.topsccc.com.tw).

Maintenance:
- Periodically check antenna connection and ensure proper ventilation.
- Use surge protection for power input in industrial environments.
- Firmware updates can be applied remotely via Ethernet to maintain compatibility with new network standards.

Software Utilities:
- EXiot Setup Utility (v1.0.10): Windows‑based tool for IP search and initial configuration.
- Supported OS: Windows 2000/2003/Vista/7/8/10.
- Web Interface: Accessible via HTTPS for secure configuration and monitoring.

Firmware Update Procedure:
1. Access web interface via Ethernet.
2. Navigate to firmware update section.
3. Upload new firmware file and confirm update.
4. Device reboots automatically after successful upgrade.

Reset & Recovery:
If login credentials are lost or configuration errors occur, press and hold the reset button for 25 seconds to restore factory defaults (SSID = EXiot_XX:XX:XX:XX:XX:XX, password = 12345678).

Physical Construction:
- Compact PVC enclosure suitable for industrial panels.
- Lightweight design for easy integration into control cabinets.
- Optional DIN‑rail kit for secure mounting.

Typical Applications:
- Industrial automation and process control
- Building management systems (BMS)
- Energy monitoring and smart metering
- Remote data acquisition (DAQ)
- IoT gateways for legacy serial devices

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### Summary

The EX9486C‑W‑MTCP is a high‑performance, cost‑effective Modbus gateway that bridges traditional serial communication with modern wireless and Ethernet networks. Its ARM9 processor, robust industrial design, and comprehensive protocol support make it ideal for integrating Modbus RTU/ASCII devices into IP‑based control systems. With flexible configuration options, strong security, and reliable performance across harsh environments, it provides a scalable solution for industrial IoT and automation applications requiring wireless Modbus connectivity.