Moxa CN2650-8 8-Port RS-232/422/485 Terminal Server

USD 2,233.57

Rackmount dual-LAN terminal server with 8 RS-232/422/485 ports for connecting serial devices to Ethernet. Features 100-240 VAC input, 0 to 55°C operation.

SKU MOXA-CN2650-8 Category
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Moxa CN2650-8 8-Port RS-232/422/485 Terminal Server

Model Identifier CN2650-8
Official Part Number CN2650-8
GTIN Standard NA

Technical Overview

Rackmount dual-LAN terminal server with 8 RS-232/422/485 ports for connecting serial devices to Ethernet. Features 100-240 VAC input, 0 to 55°C operation.

Key Features

  • 8 software-selectable RS-232/422/485 serial ports via 8-pin RJ45 connectors
  • Dual 10/100BaseT(X) Ethernet ports with 1.5 kV magnetic isolation protection
  • Supports Real COM/TTY drivers for Windows and Linux operating systems
  • Redundant COM function for enhanced network reliability and uninterrupted data transmission
  • Dual-host redundancy support to connect to backup PCs
  • Wide input voltage range of 100 to 240 VAC (50/60 Hz)
  • Automatic Data Direction Control (ADDC) for RS-485
  • Durable metal housing for industrial environments
  • Designed for standard 19-inch rack mounting

Equipped with dual-LAN cards featuring independent MAC and IP addresses, the CN2650-8 supports Redundant COM functionality and dual-host redundancy, ensuring continuous application operation and network resilience.

Technical Specification Matrix

ParameterValue
Ethernet Ports2 x 10/100BaseT(X) (RJ45 connector)
Magnetic Isolation Protection1.5 kV (built-in for Ethernet)
Serial Ports8 (RS-232/422/485, 8-pin RJ45 connector)
Serial StandardsRS-232, RS-422, RS-485
Baudrate50 bps to 921.6 kbps
Data Bits5, 6, 7, 8
Stop Bits1, 1.5, 2
ParityNone, Even, Odd, Space, Mark
Flow ControlNone, RTS/CTS, DTR/DSR, XON/XOFF
RS-485 Data Direction ControlAutomatic Data Direction Control (ADDC)
RS-485 Pull High/Low Resistor1 kilo-ohm, 150 kilo-ohms
RS-485 Terminator120 ohms
Console PortRS-232 (TxD, RxD, GND), 8-pin RJ45 (19200, n, 8, 1)
Input Voltage100 to 240 VAC (50/60 Hz)
Input Current130 mA @ 110 VAC
Operating Temperature0 to 55°C (32 to 131°F)
Storage Temperature0 to 55°C (32 to 131°F) (package included)
Ambient Relative Humidity5 to 95% (non-condensing)
HousingMetal
Installation19-inch rack mounting
EMCEN 55032/24
EMICISPR 32, FCC Part 15B Class A
EMSIEC 61000-4-2 ESD: Contact: 8 kV; Air: 15 kV; IEC 61000-4-4 EFT: Power: 4 kV; Signal: 2 kV; IEC 61000-4-5 Surge: Power: 2.5 kV; Signal: 1 kV; IEC 61000-4-6 CS: 150 kHz to 80 MHz: 3 V/m; Signal: 3 V/m
SafetyUL 60950-1
VibrationIEC 60068-2-6
FreefallIEC 60068-2-32
Physical Weight (kg)2.41
Dimensions L x W x H (cm)44 x 19.8 x 4.55

Industrial Applications

1. Industrial Process Control Systems Integration

The Moxa CN2650-8 serves as a critical bridge for integrating legacy serial-based industrial devices, such as PLCs, RTUs, and sensors, into modern Ethernet-based control networks. Its 8 multi-standard serial ports (RS-232/422/485) allow for diverse device connectivity, while the dual-LAN and Redundant COM features guarantee continuous data acquisition and control, even in the event of a network path failure. The robust metal housing and 0 to 55°C operating temperature ensure reliable performance in demanding industrial environments.

Problem Solved

Ensures uninterrupted communication and control between serial industrial equipment and IP-based control systems, mitigating downtime risks associated with network failures.

RS-232RS-422RS-485EthernetRedundant COMPLCRTUIndustrial Automation0 to 55°C

2. Building Management Systems (BMS) Device Aggregation

This terminal server is ideal for consolidating various building infrastructure devices, including HVAC controllers, access control systems, and energy meters, which typically communicate via serial protocols like RS-485 Modbus, into a centralized IP-based Building Management System. Its 8 serial ports facilitate the aggregation of multiple devices, and the built-in redundancy features enhance system uptime, crucial for critical building operations. The 19-inch rackmount design is well-suited for installation in central control rooms.

Problem Solved

Centralizes management and improves reliability of disparate serial-based building systems by connecting them to a unified IP network with built-in redundancy.

BMSHVACAccess ControlRS-485ModbusNetwork RedundancyRackmountIP Network

3. Point-of-Sale (POS) and Kiosk Peripheral Connectivity

In retail or service sectors, the CN2650-8 can efficiently connect multiple serial peripherals like POS terminals, barcode scanners, and receipt printers to a central server over an Ethernet network. Its ability to support different serial standards (RS-232 for cash registers, RS-485 for some displays) and its resilient dual-LAN configuration provide a dependable solution for commercial applications that require robust device aggregation and continuous network availability. The metal housing ensures durability in busy commercial settings.

Problem Solved

Provides a reliable and flexible solution for connecting multiple serial POS and kiosk peripherals to a central network, enhancing operational efficiency and reducing connectivity failures.

POSKioskRS-232RS-485EthernetRetail AutomationNetwork ResilienceCommercial Applications
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