DeviceMaster MOD-2304

4-Port serial device server with DB9 connectors and dual Ethernet ports

Part Number: 99612-5

PortVision DXweb

Engineering Drawing

Download Specifications
    • DIN-rail mounting and DB9 connections
    • Wide operating temperature ranges (-40º C to 75º C)
    • Surge protection for serial ports
    • Wide DC Input Voltage Power (5 - 30VDC)
    • Support for Modbus Router, Modbus/TCP, or Modbus Server
    • Dual Ethernet ports for daisy chaining network connections between multiple units
    • Four serial ports with DB9M
    • DualConnectPlus™ technology
    • SSL & SSH management, SSL serial data stream encryption
    • Software Controllable integrated 120Ω Termination Resistor for both the Transmit and Receive side in RS-422/485 Mode
    • NEMA TS2 Certified
    • UL Safety Certified

    The DeviceMaster UP Modbus provides an RS-232, RS-422 or RS-485 software-selectable serial connection to an Industrial Ethernet network.

    Simultaneously connect both serial and Ethernet devices to PLCs and/or applications with DualConnectPlus™ technology. String, RFID, and barcode data filtering eliminates redundant data while extracting the RFID and barcode parameters.

    • DeviceMaster UP 4 Port DB9 2E Device
    • DIN Rail
    • Installation Quick Start
    • DB9 Loopback plug
    • Interface Specification 10/100 BASE-T Ethernet
    • Memory
      • SDRAM 32 MB
      • Flash 8 MB
    • Enclosure UL94-V0 PLASTIC
    • Installation Method DIN Rail (35mm)
    • Network Protocols AvailableModbus Router (default)
      Modbus Server
    • LED IndicatorsStatus, Ethernet Port Link and Activity
    • Dimensions 4.6" x 3.9" x 1.8"
      116.8 x 99.1 x 45.7 mm
    • Product Weight 0.45lbs
    Electrical Specifications
    • Input Voltage Requirements 5-30VDC
    • Power Consumption (Maximum)3.0 Watts
    • Power Input Redundancy Dual Redundant Power Input
    • ESD Surge ProtectionProvided minimum of 25KV protection on all serial lines. All Ethernet components are rated to 1.5KV magnetic surge protection.
    Environmental Specifications
    • Air temperature
      • System On -40 to 75° C
      • System Off -40 to 85° C
    • Operating Humidity (non-condensing) 0% to 95%
    • Altitude 0 to 10,000 Feet
      3,048 m
    • MTBF (Mean Time Between Failures)42.3 Years

    Serial Communications

    • Connector Type DB9 Male
    • Number of Ports 4
    • Serial Interfaces RS-232
      RS-485 2-Wire
      RS-485 4-Wire (Master/Slave)
    • Termination Resistor for RS422/485Software controllable 120Ω termination resistors available for each transmit and receive differential pair on every port. The 120Ω termination resistors can be enabled between TX+ and TX- OR RX+ and RX- or both on every port
    • Baud Rate 300 to 230Kbps
      • Receive Buffer 4.5KB
      • Transmit Buffer 4.5KB
    • Serial Port Control
      • Data Bits5, 6, 7 or 8
      • Parity odd, even, mark, space, or none
      • Stop Bits* 1, 1.5, or 2
      • Flow Control Hardware, Software, None
      • * Stop bit 1.5: Supported only when used with 5 data bits
    Ethernet Specifications
    • Number of Ports2
    • Speed10/100Mbps
    • Connector TypeRJ45F Auto MDI/MDI-X
    • LEDEthernet Link (Green)
      Ethernet Activity (Amber)
    • Ethernet Specific FeaturesEthernet packet switching, Auto Negotiation, Link/Activity Status LED
    • Network ProtocolsARP, BOOTP, DHCP/RARP, HTTP, HTTPS, SSH, SSL/TLS, SNMP (MIB-II), Telnet, and TFTP, and supports IP multicast data transmission
    Modbus Router Features (Default)
    • DescriptionPure Modbus, multiple Modbus master and slave types , remote, local, and private devices
    • Supported InterfacesPLCs, SCADA systems, HMIs, OPC servers and applications
    • Web Page Configuration• Master-to-master connectivity via the Shared Memory sub-system
      • Private Modbus serial bus support designed to restrict access to private Modbus devices
      • Connectivity from serial Modbus masters to Modbus/TCP networks
      • The ability to connect multiple types of Modbus masters to Modbus slave device(s)
      • Convert from one form of Modbus, such as Modbus/TCP, to Modbus/RTU or Modbus/ASCII
      • Provide connectivity from a serial Modbus master to a remote Modbus slave device
      • Eliminate Modbus device ID conflicts and solve device ID configuration problems
      • Enable Modbus security by blocking write messages in Read-Only Mode
      • Device ID to Modbus/TCP slave via configurable IP address and TCP/IP port
      • Modbus Network Bridging support
    • DiagnosticsLocal and remote slave device and port specific diagnostic web pages that display status, message response timing, timeout and other error counts, and overall message statistics. A serial log is also included to provide message level diagnosis.
    Modbus Server Features (Downloadable)
    • DescriptionModbus/RTU over Ethernet master(s) to serial slave(s)
    • Supported InterfacesOPC Servers and Applications that require Modbus/RTU communication over Com ports or Ethernet TCP/IP connections
    • Web Page Configuration• Supports Modbus/RTU over Ethernet TCP/IP connections to the corresponding serial port via intelligent Modbus message handling and routing.
      • Supports only Modbus/RTU over Ethernet TCP/IP connections to a serial port. For Modbus/TCP functionality, please see the DeviceMaster UP.
      • Supports up to six Ethernet TCP/IP connections to each serial port.
      • Supports up to 255 Modbus devices per port. Both valid, (1-247), and reserved, (248-255), device ids are supported
      • Modbus/RTU specific message handling: ◦CRC verification of all messages received on the TCP/IP and serial interfaces
      • Timing out of responses from slave Modbus/RTU devices
      • Broadcast message handling on connected port only
      • System monitoring to ensure gateway operation:
      • Gateway busy
      • Application message timeouts
      • Combined with a serial port redirector, such as the Comtrol Secure Port Redirector, can support up to six COM port connections to each serial port
    • Diagnostics• Modbus device specific statistics, response timing, and status. Up to 255 devices per serial port can be monitored simultaneously.
      • Serial port specific statistics and status
      • Serial port message logging
    Modbus/TCP Features (Downloadable)
    • Supported InterfacesPLC, SCADA system, HMI, or OPC Server
    • Supported Controllers• Modbus/TCP masters and slaves
      • Modbus/RTU and Modbus/ASCII serial masters and slaves
      • Applications over Ethernet TCP/IP connections (raw/ASCII only)
    • Supported Devices• Raw/ASCII devices, both serial and Ethernet TCP/IP, such as barcode scanners, vision systems, RFID readers, weigh scales, encoders and printers
      • Modbus/RTU and Modbus/ASCII serial slaves
    • Recommended Installations• Connectivity to serial and/or Ethernet TCP/IP raw/ASCII devices
      • Connectivity to Modbus/RTU and/or Modbus/ASCII serial devices
      • Connecting single or multiple Modbus masters and/or applications to the devices
      • Automatic Modbus protocol translations (if needed)
    • Web Page Configuration• Highly flexible, with an emphasis on Raw/ASCII devices
      • Also supports Modbus RTU/ASCII slave devices
      • Connect Raw/ASCII devices to Modbus/TCP and Modbus RTU/ASCII serial controllers
      • Automatic protocol conversions and routing
      • Connect Modbus/TCP and Modbus RTU/ASCII serial masters to Modbus RTU/ASCII serial slaves
      • Many unique Raw/ASCII handling features
      • Simultaneously connect multiple Modbus masters to individual devices
      • Modbus message Alias Device ID conversions
    • DiagnosticsYes
    • Sample PLC ProgramsYes
    • SNMP SupportMonitoring Only
    • Other Software FeaturesPortVision DX remote management
    • Manufacturer's Warranty5 Years
    Export Information
    • Packaged Shipping Weight 0.85lbs
    • Package Dimensions 5-11/16" x 5-11/16" x 3 3/8"
      144.46 x 144.46 x 85.73 mm
    • UPC Code 7-56727-99612-5
    • Country of Origin USA
    • ECCN 5A992
    • Schedule B Number 8471.80.1000
    Regulatory Approvals
    • Emissions FCC Part 15 Subpart B: Class A limit
      Canadian EMC Requirements: ICES-003
      European Standard EN61000-6-4
      European Standard EN55022
      AS/NZS CISPR 22
    • Immunity European Standard EN61000-6-2
      European Standard EN55024
      IEC 1000-4-2/EN61000-4-2: ESD
      IEC 1000-4-3/EN61000-4-3: RF
      IEC 1000-4-4/EN61000-4-4: Fast Transient/Burst
      IEC 1000-4-5/EN61000-4-5: Surge
      IEC 1000-4-6/EN61000-4-6: Conducted Disturbance
      IEC 1000-4-8/EN61000-4-8: Magnetic Field
      IEC 1000-4-11/EN61000-4-11: Dips and Voltage Variations
    • Safety UL 61010-1, UL 61010-2-201
      CSA C22.2 No. 61010-1-12
      CSA C22.2 No. 61010-2-201:14
    • Other Regulatory Approvals European Standard: RoHS 2 Compliant under CE

    • Pinout Diagram

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    Pre-Sales Questions

    Comtrol's Pre-sales Team
    For sales questions or to locate a reseller near you.

    +1-800-926-6876 (1-800-Go Rocket)
    Fax: +1-763-957-6001
    [email protected]

    Comtrol's Industrial Automation Sales
    For sales questions or to locate an industrial distributor near you.

    +1-800-926-6876 (1-800-Go Rocket)
    Fax: +1-763-957-6001
    [email protected]

    Product Support and Service Information

    Part Number: 99612-5

    Sales Support

    Call +1.763.957.6000, or e-mail [email protected]

    Technical Support

    For technical assistance, our U.S.-based technical support team is only a phone call away.

    Call +1.763.957.6000, or visit our forum .


    Comtrol offers a 30-Day satisfaction guarantee and a 5-year limited warranty on all DeviceMaster UP family products!

    View Warranty

    Extended Warranty Available