DeviceMaster UP 1-Port VDC Modbus

MFR PART #  99501-2
PART #  485905
Minimum 1 Each
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The DeviceMaster UP has been designed to meet the demands of today’s increasingly diverse Modbus installations. 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. 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.


  • DIN-rail mounting and screw terminal power connections
  • 1-Port VDC Modbus Ethernet gateway delivers 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 Directive 2002/95/EC compliant

Specification Description

Serial Connectors: (1) DB9 Male
Ethernet Ports: (1) 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: RugSteel Construction
Device Requirements: 5 to 30 V DC
Device Consumption: 2.5 Watts
External Power Supply (Included) - Input: 90 to 260 V AC @ 47-63Hz, Output: 500mA @ 24 V DC
Surge Protection: 15KV


UNSPSC Code 43222605

Spec Sheet

Spec Sheet

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