DeviceMaster ® UP 4-Port Modbus

The DeviceMaster UP 4-Port Modbus industrial Ethernet gateway has a wide operating temperature and Modbus/TCP support

Part Number: 99521-0

PortVision DXweb

Engineering Drawing

Download Specifications


    • DIN-rail mounting and screw terminal power connections
    • Highly flexible and unique Modbus functionality
    • Multiple Modbus master and slave types
    • Raw/ASCII Serial and Ethernet device support
    • Variable power input eliminates need for power converters
    • Dual Ethernet ports for daisy chaining network connections between multiple units
    • RoHS 2 compliant under CE

    Comtrol has developed three unique Modbus firmware applications that provide a wide range of Modbus connectivity. Simple connections or complex Modbus networks, you can do it all with a DeviceMaster UP.


    The DeviceMaster UP has been designed to meet the demands of today’s increasingly diverse Modbus installations.

    Highly flexible and robust, the DeviceMaster UP provides connectivity between a vast array of Modbus controllers and devices. Simplified configuration pages, innovative functionality and informative diagnostic information all make for quick and easy set-up of even the most complex Modbus installations.

    View the DeviceMaster UP Modbus Solutions

    • DeviceMaster UP 4-Port Modbus
    • Power Cord, Euro Power Cord
    • Loopback plugs - DB9, RJ45
    • Bumper
    • Brackets (2)
    • Power Supply
    • RJ45-DB9 Adapter (4)
    • Screws (4)
    • Serial Connectors (4) DB9 Male
    • Ethernet Ports (2) 10/100 BaseT
    • Processor ARM7 44Mhz
    • Memory
      • RAM 8MB
      • Flash 4MB
    • Mounting Options Panel/Rack
    • LED Indicators Status, Ethernet Link/Activity, Collision, 100MB Ethernet, RX/TX per Port
    • Housing Rugged Steel Construction
    Electrical Specifications
    • Device Requirements 5 to 30 VDC
    • Device Consumption 2.5 Watts
    • External Power Supply (Included)
      • Input 90 to 260 VAC @ 47-63Hz
      • Output 500mA @ 24 VDC
    • Surge Protection 15KV
    Environmental Specifications
    • Operating Temperature -37° to 74° C
    • Storage Temperature -40° to 85° C
    • Humidity (non-condensing)
      • System On 20% to 80%
      • System Off 8% to 80%
    • Altitude 0 to 10000 Feet
    • Heat Output 8.5 BTU/Hr
    • MTBF (Mean Time Between Failures) 25.0 Years

    Serial Communications

    • Software Selectable RS-232/422/485
    • Baud Rate 50 bps to 230 Kbps
      • Data Bits 7 or 8
      • Parity odd, even, or none
      • Stop Bits 1 or 2
    • Communication ModesModbus/TCP to Serial or Ethernet TCP/IP
      Modbus/TCP to Modbus/RTU
      Modbus/TCP to raw serial data
      Modbus/RTU Device (Auto Locate and Auto Route)
    • Network Protocols Telnet, HTTP, SNMP, DHCP, ARP, BOOTP, Ping

    Regulatory Approval Marks

    CE Mark, FCC Part 15 Subpart B Class A, CTick, CUL, ODVA Certified, PIC Certified, RoHS Certified

    Regulatory Approvals
    • Emissions EN55022 & A1:2000 IEC 100032
      IEC 100033
    • Immunity EN55024
      IEC 100042
      IEC 100043
      IEC 100044
      IEC 100045
      IEC 100046
      IEC 100048
      IEC 1000411
    • Safety EN60950
      IEC 60950
      CSA C22.2 No. 50/UL60950
    • Other Regulatory Approvals European Standard: RoHS 2 Compliant under CE
    Find a Distributor

    » Industrial Distributors
    » North American Distributors
    » International Distributors

    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]

    DocumentDescriptionDownload File
    DeviceMaster ® UP 4-Port Modbus User GuideContains detailed installation procedures and configuration information.
    Product Support and Service Information
    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 at


    Comtrol offers a 30-Day satisfaction guarantee and a 5-year limited warranty on all DeviceMaster products! Extended Warranty Available.

    Software & Drivers
    » Comtrol FTP Site