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8-ch Isolated DI (Dry, Wet) and 8-ch Isolated DO (Sink/Source, 3.5~80 VDC) Module with LED Display


8-ch Isolated DI (Dry, Wet) and 8-ch Isolated DO (Sink/Source, 3.5~80 VDC) Module with LED Display

  Price:  $289.00  

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  • Digital Input and Digital Output selectable as either sink- or source-type via wire connection.
  • All Digital Input Channels can be used as 16-bit Counters
  • Built-in Dual Watchdog
  • 8 kV ESD Protection
  • 2000 VDC Intra-module Isolation
  • Configurable Power-on Value Settings
  • Configurable Safe Value Settings
  • Wide Operating Temperature Range: -25 to +75°C



The M-7055U module provides 8 isolated channels for Digital Input and 8 isolated channels for Digital Output. Digital Input and Digital Output can be selected as either sink- or source-type via wire connection. All Digital Input channels are also able to be used as 16-bit counters. There are options to enable both power-on and safe values. The M-7055UD has 16 LED indicators that can be used to monitor the status of the Digital Input and Digital Output channels. The M-7055U(D) also provides ±8 kV ESD, ±4 kV EFT and ±2 kV surge protection, as well as 2000 VDC intra-module isolation to enhance noise protection capabilities in harsh industrial environments.


  • Building Automation
  • Factory Automation
  • Machine Automation
  • Remote Maintenance
  • Remote Diagnosis
  • Testing Equipment


CPU Module
Watchdog Timer Yes, Module (1.6 Seconds), Communication (Programmable)
Type I/O LED Indicator
Intra-module Isolation 2000 VDC
EMS Protection
EFT (IEC 61000-4-4) ±4 kV for Power
ESD (IEC 61000-4-2) ±8 kV Contact for Each Terminal
±15 kV Air for Random Point
Surge (IEC 61000-4-5) ±2 kV
LED Indicators
Status 1 x Power and Communication
Digital Input/Counter
Channel 8
Type Dry Contact, Source
Wet Contact, Sink/Source
Wet Contact, ON Voltage Level +10 ~ 50 VDC
Wet Contact, OFF Voltage Level +4 VDC Max.
Dry Contact, ON Voltage Level Close to GND
Dry Contact, OFF Voltage Level Open
Max. Counts 65535 (16-bit)
Frequency 100 Hz
Min. Pulse Width 5 ms
Input Impedance 10 KΩ
Overvoltage Protection ±70 VDC
Digital Output
Channels 8
Type Push-Pull
Sink/Source (NPN/PNP) Sink/Source
Load Voltage +3.5 ~ 80 VDC
Max. Load Current 500 mA/Channel
Power on Value Yes
Safe Value Yes
COM Ports
Ports 1 x RS-485
Baud Rate 1200 ~ 115200 bps
Data Format (N, 8, 1), (N, 8, 2), (E, 8, 1), (O, 8, 1)
Protocol Modbus RTU, DCON
Reverse Polarity Protection Yes
Consumption 0.9W Max
Input Range 10 ~ 48 VDC
Dimensions (mm) 123 x 72 x 35 (W x L x H)
Installation DIN-Rail
Operating Temperature -25 ~ +75°C
Storage Temperature -40 ~ +85°C
Humidity 10 ~ 95% RH, Non-condensing

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