Sollae Systems ezTCP CSE-H53N Industrial RS-232 to Ethernet Converter

Transform your RS-232 serial devices into network-ready equipment with industrial-grade reliability and advanced IPv4 and IPv6 support.

The Sollae Systems ezTCP CSE-H53N is an industrial-grade RS232 serial-to-Ethernet converter designed for demanding environments. With support for both IPv4 and IPv6, industrial temperature range (-40°C to +85°C), and advanced features like SSL/TLS security and multiple simultaneous connections, the CSE-H53N delivers enterprise-level performance for mission-critical applications.

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Why Choose the CSE-H53N?

🌐 Future-Proof IPv6 Support

Full IPv4/IPv6 dual stack implementation with stateless and stateful (DHCPv6) address auto-configuration. Ready for modern networks and future IPv6 deployments.

🏭 Industrial-Grade Reliability

Extreme temperature range (-40°C to +85°C) and robust design make this converter perfect for harsh industrial environments where consumer-grade equipment fails.

🔒 Enterprise Security

Built-in SSL/TLS encryption, IP/MAC filtering, and password protection ensure your serial data remains secure across the network.

🔄 Multiple Connection Support

Monitor and control from multiple locations simultaneously. Multiple clients can connect to a single CSE-H53N for distributed monitoring and control applications (firmware v2.3A or later).

⚡ High-Speed Performance

RS-232 support up to 230.4 kbps ensures fast, reliable data transfer for even the most demanding serial applications.

🎯 Flexible Configuration

Configure via Ethernet (ezManager), serial port, AT commands, or Telnet. Choose the method that works best for your deployment scenario.

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CSE-H53N Technical Specifications

Serial Interface

Physical Interface:

• Port: 1 x RS-232 (DB9 Male connector)
• Signals: RXD, TXD, GND, RTS, CTS, DTR, DSR
• Maximum Baud Rate: 230.4 kbps
• Supported Baud Rates: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 bps

Serial Parameters:

• Data Bits: 8 bits, 7 bits (with parity)
• Parity: None, Even, Odd, Mark, Space
• Stop Bits: 1, 1.5, 2
• Flow Control: None, RTS/CTS, XON/XOFF

Pin Assignment (DB9 Male):

• Pin 2: RXD (Receive Data) - Input
• Pin 3: TXD (Transmit Data) - Output
• Pin 4: DTR (Data Terminal Ready) - Output (Active during TCP connection)
• Pin 5: GND (Ground)
• Pin 6: DSR (Data Set Ready) - Input
• Pin 7: RTS (Request To Send) - Output
• Pin 8: CTS (Clear To Send) - Input

Network Interface

Ethernet:

• Port: 1 x RJ-45 (10/100 Mbps)
• Speed: 10Base-T or 100Base-TX (Auto-Sensing)
• Cable Detection: Auto MDI/MDIX (works with straight or crossover cables)
• Connector LEDs:
  • Green: Link status (On = connected, Blink = data activity)
  • Yellow: Speed indicator (Off = 10Mbps, On = 100Mbps)

Network Protocols:

• IPv4: TCP, UDP, IP, ICMP, ARP, DHCP, PPPoE, DNS, DDNS
• IPv6: ICMPv6, TCPv6, UDPv6, IPv6 fragmentation
• IPv6 Configuration: Stateless and Stateful (DHCPv6) auto-configuration
• Management: Telnet, HTTP (ezManager)
• Advanced: Telnet COM Port Control Option (RFC 2217)

Communication Modes

TCP Server (T2S):

• Passive connection mode
• Waits for incoming TCP client connections
• Default local port: 1470
• Ideal for centralized monitoring applications

TCP Client (COD):

• Active connection mode
• Initiates connection to remote TCP server
• Configurable peer IP address and port
• Perfect for data logging and cloud integration

AT Command Mode (ATC):

• Control connections dynamically via AT commands
• Both active and passive connections supported
• Allows runtime configuration changes
• Patented Sollae Systems technology

UDP Mode (U2S):

• Connectionless communication
• Broadcast and multicast support
• Low-latency data transfer
• N:M topology (many-to-many communication)

Power Specifications

• Input Voltage: DC 5V ±0.5V (±10%)
• Current Consumption: 200mA typical
• Power Connector: DC jack (Outer: Ø3.5mm, Inner: Ø1.35mm)
• Protection: Over-current, reverse voltage, and surge protection

Environmental Specifications

• Operating Temperature: -40°C to +85°C (-40°F to 185°F)
• Storage Temperature: -40°C to +85°C
• Humidity: 5% to 95% RH, non-condensing
• Certifications: KC, CE, FCC Class A, RoHS compliant

Physical Specifications

• Dimensions: 89mm (W) x 57mm (L) x 24mm (H) (3.5" x 2.24" x 0.94")
• Weight: Approximately 65g (2.3 oz)
• Mounting: Desktop (compact footprint)
• Enclosure: Industrial-grade plastic housing

Status Indicators (LEDs)

Top Panel LEDs:

• PWR (Red): Power indicator (On = power supplied)
• STS (Yellow): Status indicator
  • Blinks every second = Obtaining IP address
  • Blinks 4 times = No IP address (DHCP/PPPoE failure)
  • On = TCP connection established
  • Off = ISP mode
  • Simultaneous blink with LINK/RXD/TXD = Serial Configuration mode
• LINK (Green): Ethernet link status (On = connected)
• RXD (Yellow): Ethernet receive activity (Blinks = receiving data)
• TXD (Green): Ethernet transmit activity (Blinks = transmitting data)

Serial Activity LEDs:

• Serial RXD (Yellow): Serial receive activity
• Serial TXD (Green): Serial transmit activity

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Real-World Applications

🏭 Industrial Automation & SCADA

• Connect PLCs, RTUs, and industrial controllers to SCADA systems
• Remote monitoring and control of manufacturing equipment
• Building automation and energy management
• Factory floor data collection and distribution
• Process control and monitoring

🏥 Healthcare & Medical Equipment

• Network legacy diagnostic equipment and patient monitors
• Laboratory automation and LIMS integration
• Medical imaging device connectivity
• Hospital infrastructure management
• Remote equipment monitoring

🚂 Transportation & Infrastructure

• Railway signaling and control systems
• Traffic management and ITS applications
• Airport ground support equipment
• Parking management and access control
• Fleet management systems

⚡ Energy & Utilities

• Smart grid monitoring and control
• Substation automation
• Remote meter reading (AMR/AMI)
• Power distribution management
• Environmental monitoring stations

📡 Telecommunications

• Serial console access to network equipment
• Remote management of telecom infrastructure
• Base station monitoring and control
• Network operations center (NOC) equipment

🔬 Laboratory & Research

• Network analytical instruments and data loggers
• Automated testing equipment
• Quality control systems
• Research data acquisition
• Environmental monitoring

🏗️ Security & Access Control

• Card readers and access control panels
• CCTV camera control (PTZ)
• Intrusion detection systems
• Fire alarm panels
• Biometric sensors

💻 IT Infrastructure

• Serial console servers
• Out-of-band management
• KVM over IP applications
• Network equipment management
• Server room monitoring

As well as industrial environments, the CSE-H53N is ideal for diverse applications such as Advertisement Systems (LED Signboards over Internet), Remote Console Monitoring, and Control PLC over Internet.

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What's in the Box

✓ CSE-H53N Serial to Ethernet Converter (1 unit)
✓ Quick Start Guide
✓ Software available for download:

• ezManager (Configuration utility for Windows)
• ezVSP (Virtual Serial Port driver for Windows)
• ezTerm (TCP/IP communication test tool)
• User manual (PDF)

All software is available for download from the Sollae Systems ezTCP website. See the link under the Technical Support & Resources section below.

Optional Accessories

+5V AC/DC Wall Mount Power Supply

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Quick Setup Guide

Step 1: Physical Connections

• Connect your RS-232 device to the DB9 Male port
• Connect Ethernet cable to your network (straight or crossover - auto-detected)
• Connect 5V DC power adapter
• PWR LED will illuminate when powered on

Step 2: Network Configuration

Default Settings:

• IP Address: 10.1.0.1
• Subnet Mask: 255.0.0.0
• Local Port: 1470
• Communication Mode: TCP Server
• Baud Rate: 19,200 bps
• Data Format: 8-N-1 (8 data bits, No parity, 1 stop bit)

Configuration Methods:

Option A - ezManager (Recommended):

1. Download and run ezManager (no installation required)
2. Click [Search All] to discover CSE-H53N on your network
3. Select the device by MAC address
4. Configure network and serial parameters
5. Click [Write] to save settings
6. Device will reboot automatically

Option B - Serial Configuration:

1. Connect RS-232 cable between PC and CSE-H53N
2. Press function button for 1-3 seconds to enter Serial Configuration mode
3. Open ezManager, select [Serial] tab
4. Select COM port and click [Open]
5. Click [Read] to load current settings
6. Modify parameters as needed
7. Click [Write] to save

Option C - AT Commands:

1. Set communication mode to "AT Command" via ezManager
2. Connect via serial terminal (115,200 bps, 8-N-1)
3. Use AT commands to configure parameters
4. Save with AT+PWP command

Step 3: Test Communication

1. Use ezManager's [Simple Test] feature
2. Configure TCP connection (IP address and port)
3. Open serial port with matching parameters
4. Send test data in both directions to verify operation

Total setup time: 5-10 minutes

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Advanced Features & Capabilities

IPv6 Dual Stack Implementation

The CSE-H53N is fully IPv6-ready with comprehensive support:

IPv6 Features:

• Full IPv4/IPv6 dual stack operation
• Stateless address auto-configuration (SLAAC)
• Stateful address configuration (DHCPv6)
• IPv6 fragmentation support
• ICMPv6, TCPv6, UDPv6 protocols
• Seamless IPv4/IPv6 interoperability

Why IPv6 Matters:

• Future-proof your infrastructure
• Larger address space eliminates NAT complexity
• Improved security with IPsec integration
• Better support for mobile and IoT devices
• Simplified network configuration

Multiple Connection Support

Simultaneous Monitoring (Firmware v2.3A+):

• Multiple TCP clients can connect to one CSE-H53N simultaneously
• Perfect for distributed monitoring applications
• Each client receives the same serial data
• Ideal for redundant monitoring systems
• No additional hardware required

Use Cases:

• Multiple operators monitoring the same equipment
• Redundant data logging systems
• Distributed SCADA architectures
• Multi-site monitoring applications

SSL/TLS Security

Secure Socket Layer Protection:

• Encrypt serial data over the network
• Protect sensitive information in transit
• Industry-standard SSL/TLS protocols
• Certificate-based authentication
• Prevents eavesdropping and tampering

Security Features:

• IP address filtering (whitelist/blacklist)
• MAC address filtering
• Password-protected configuration
• Secure firmware updates
• Access control lists

Packet Fragmentation Control

Separator Settings:

• Define custom packet delimiters
• Control when data is transmitted over network
• Optimize for different protocols and applications
• Reduce network overhead
• Improve application-level parsing

Data Frame Interval:

• Configure timeout for packet assembly
• Balance real-time performance vs. network efficiency
• Adjustable from 0ms (immediate) to custom values
• Optimize for your specific application

Telnet COM Port Control (RFC 2217)

Remote Serial Port Control:

• Change serial parameters remotely over network
• Adjust baud rate, parity, data bits, stop bits
• Control flow control settings
• Monitor serial port status
• No physical access required

Benefits:

• Remote troubleshooting and diagnostics
• Dynamic serial parameter adjustment
• Centralized serial port management
• Reduced site visits and maintenance costs

Dynamic DNS (DDNS) Support

Always Accessible:

• Automatic DNS updates when IP address changes
• Use hostname instead of IP address
• Perfect for dynamic IP environments
• Supports major DDNS providers
• Simplified remote access

PPPoE Support

Direct Internet Connection:

• Connect directly to DSL/cable modems
• No router required for simple deployments
• Automatic authentication and connection
• Ideal for remote installations
• Reduced hardware costs

AT Command Mode

Patented Dynamic Control:

• Change connection parameters at runtime
• Establish/terminate connections via serial commands
• No device reboot required
• Perfect for applications requiring dynamic connectivity
• Unique Sollae Systems technology

AT Command Capabilities:

• Configure IP addresses and ports
• Establish TCP connections
• Control DHCP and PPPoE
• Set DNS servers
• Modify timeout values
• Save settings to flash memory

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Software Suite

ezManager - Configuration Utility

Comprehensive Management Tool for Windows:

Features:

• No installation required (portable application)
• Automatic device discovery via MAC or IP address
• Intuitive graphical interface
• Real-time status monitoring
• Firmware update management
• Configuration backup and restore
• Simple test utility included
• Batch configuration for multiple devices

Configuration Methods:

• Via Ethernet (LAN)
• Via Serial port
• Remote configuration via Telnet

ezVSP - Virtual Serial Port Driver

Windows Virtual COM Port Driver:

Features:

• Creates virtual COM ports on Windows PC
• Legacy applications work without modification
• Supports multiple virtual ports
• Automatic reconnection on network interruption
• Compatible with Windows 7/8/10/11
• No application changes required

How It Works: The CSE-H53N appears as a local COM port on your Windows PC. Your existing serial software communicates with the virtual port, and ezVSP handles all network communication transparently.

ezTerm - Communication Test Tool

Simple TCP/IP Testing:

Features:

• Quick TCP/IP communication testing
• Both TCP and UDP support
• Server and client modes
• Hex and ASCII data display
• Data logging capabilities
• Perfect for troubleshooting

Smartphone Applications

Mobile Configuration:

• ezManager app available for iOS and Android
• Configure devices from your smartphone or tablet
• Monitor status remotely
• Perfect for field installations
• Free download from app stores

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Operation Modes

Normal Mode

Standard Operation:

• For normal data communication
• Four communication modes available (TCP Server, TCP Client, AT Command, UDP)
• Configuration via ezManager or Telnet
• Real-time status monitoring
• Default operating mode

Serial Configuration Mode

Serial Port Configuration:

• Configure via RS-232 port
• Serial parameters: 115,200 bps, 8-N-1
• Use ezManager Serial tab
• No network connection required
• Perfect for initial setup or network troubleshooting

How to Enter:

• Press function button for 1-3 seconds
• All LEDs (STS, LINK, RXD, TXD) blink simultaneously
• Connect via serial port at 115,200 bps

ISP Mode (In-System Programming)

Firmware Updates:

• For upgrading firmware
• Bypass security settings (password recovery)
• Direct firmware upload via ezManager
• Factory reset capability
• Emergency recovery mode

How to Enter:

• Press function button for more than 3 seconds during power-on
• STS LED turns off
• Upload firmware via ezManager

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Network Topology Examples

1:1 Direct Connection

Simple point-to-point connection for testing or isolated systems.

LAN Integration

[Network Switch] ←→ [CSE-H53N] ←→ [Serial Device]
                 ←→ [PC 1]
                 ←→ [PC 2]

Multiple PCs access one serial device over local network.

Internet Access via Router

Remote access to serial devices from anywhere in the world.

Serial Tunneling

Extend serial connections over long distances via Ethernet.

Multiple Monitoring

                    ←→ [Monitor PC 1]
[CSE-H53N] ←→ [Network] ←→ [Monitor PC 2]
                    ←→ [Monitor PC 3]

Multiple clients simultaneously monitor one serial device (firmware v2.3A+).

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Frequently Asked Questions

Q: What's the difference between the CSE-H53N and other serial converters?
A: The CSE-H53N offers industrial temperature range (-40°C to +85°C), full IPv6 support, SSL/TLS security, multiple simultaneous connections, and advanced features like AT command mode and RFC 2217 support. It's designed for professional and industrial applications requiring reliability and advanced functionality.

Q: Does the CSE-H53N support IPv6?
A: Yes! The CSE-H53N has full IPv4/IPv6 dual stack support with both stateless (SLAAC) and stateful (DHCPv6) address auto-configuration. It's fully ready for modern IPv6 networks.

Q: Can multiple computers access the serial device simultaneously?
A: Yes, with firmware version 2.3A or later, multiple TCP clients can connect to the CSE-H53N simultaneously. All connected clients receive the same serial data, perfect for distributed monitoring applications.

Q: What is AT Command mode?
A: AT Command mode is a patented Sollae Systems feature that allows you to control TCP/IP connections dynamically via serial AT commands. You can establish connections, change IP addresses, modify ports, and configure network parameters without rebooting the device.

Q: How do I configure the CSE-H53N?
A: You have multiple options: (1) ezManager via Ethernet, (2) ezManager via serial port, (3) AT commands via serial terminal, or (4) Telnet. Choose the method that works best for your deployment.

Q: What is the default IP address?
A: The default IP address is 10.1.0.1 with subnet mask 255.0.0.0. The default local port is 1470, and the default serial settings are 19,200 bps, 8-N-1.

Q: Can I use this outdoors?
A: The CSE-H53N is rated for industrial temperatures (-40°C to +85°C) but is not waterproof. For outdoor use, install in a weatherproof enclosure (NEMA 4X or IP65 rated).

Q: Does it support SSL/TLS encryption?
A: Yes, the CSE-H53N includes SSL/TLS support for secure data transmission over the network. This protects your serial data from eavesdropping and tampering.

Q: What operating systems are supported?
A: The device works with any OS that supports TCP/IP (Windows, Linux, macOS, Unix, etc.). The ezManager and ezVSP utilities are Windows-only, but you can configure via Telnet or AT commands from any platform.

Q: How do I update the firmware?
A: Use ezManager to upload new firmware. Enter ISP mode by pressing the function button for more than 3 seconds during power-on, then use ezManager's firmware update feature.

Q: What is RFC 2217 support?
A: RFC 2217 (Telnet COM Port Control Option) allows you to remotely change serial port parameters (baud rate, parity, data bits, etc.) over the network without physical access to the device.

Q: Can I use straight or crossover Ethernet cables?
A: Either! The CSE-H53N supports Auto MDI/MDIX, which automatically detects and adapts to both cable types.

Technical Support & Resources

Videos

CSE-H53N Introductory video