The A-1051 is an RS485 remote IO unit with 16 digital inputs. 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.

Application examples

• PT100 temperature sensor to Modbus 
• Digital control with Modbus
• Driving analogue signals
• Converting analog signals to digital Modbus

Communication protocol

• Modbus RTU
• Modbus ASCII
• USB 

A-1051 Specification

• 16 Isolated Digital Inputs
  • Status Low：<1VDC
  • Status High：>5~30VDC
• 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

A-1051 Configuration Software

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