A-1055 RS485 Modbus IO Unit - 8 Digital Inputs, 8 Digital Outputs

A-1055 RS485 Modbus IO Unit - 8 Digital Inputs, 8 Digital Outputs
Our Price:  £90.00(£108.00 Inc. VAT)

Digital Inputs:  8
Digital Outputs:  8



10 in stock, immediate despatch

The  A-1055 is an RS485 remote IO unit with 8 digital inputs and 8 open collector transistor outputs. The unit supports both Modbus RTU and Modbus ASCII protocols.  Featuring a robust industrial construction with the use of optical isolators to prevent ground loop effects and limits damages from power surges.

  • 8 Isolated Digital Inputs
    • Status Low:<1VDC
    • Status High:>5~30VDC
  • 8 open-collector NPN transistor outputs
    • sinking output
    • rated 8 ~ 60VDC @ 1.75A
  • LED indication of IO status
  • Output state pre-settable on Comms fail
  • Output state pre-settable on power-up
  • Input/Output Operating Frequency: 10HZ
  • Interface: RS485
  • Protocol - Modbus RTU or Modbus ASCII
  • Communication Baud Rate: 1200~115200bps
  • Isolation Voltage: 5000 V DC
  • Surge , EFT And ESD Protection
  • Operating Temperature: - 20 to 75º C
  • Power: 10 to 30VDC, 24VAC (RS485)
  • Panel or DIN Rail mount
  • Dimensions - 72mm x 118mm x 39mm
Included Software

The unit is configured using the free Utility Software. This can be used to set the units' parameters and to set the input ranges and monitor inputs.


Optional Software


DAQFactory is a low cost data acquisition and control software for SCADA, Factory Automation, HMI and Test and Measurement applications. DAQFactory provides all the tools needed to acquire data, log it, share it on a network, display it on the screen, graph it, analyse it, and automate your project. DAQFactory can communicate with just about any serial or Ethernet device using Modbus RTU, ASCII or Modbus/ TCP. It also supports a wide variety of DAQ devices including LabJack USB devices and many other DAQ cards.

More Information >>



User Manual >>

Quick Start Guide >>

Utility Software >>

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