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8-channel Isolated Digital Input and 8-channel Sink Type Isolated Digital Output Counter Voltage Output Module, communicable over RS-485 and Modbus RTU


8-channel Isolated Digital Input and 8-channel Sink Type Isolated Digital Output Counter Voltage Output Module, communicable over RS-485 and Modbus RTU

  Price:  $269.00  

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M-7055-NPN offers 8 channels for digital output and 8 channels for digital input. M-7055-NPN 8 channels for digital output each of which features Photo-couple isolation. supports sink type output with short-circuits protection. There are options for power on value and safe value for your consideration. Moreover, you can choose sink type or source type input by wire connections. All channels are able to be used as 16-bit counters. M-7055D-NPN has 8 LED indicators for DO channel status and 8 LED indicators for DI channel status. 4 kV ESD protection, 4 kV EFT protection, 3 kV Surge Protection for Power Input and 3750 VDC intra-module isolation are standard.


  • Digital Outputs for Sink Type
  • Support Digital Inputs (Sink Type or Source Type)
  • Photo Couple Isolation
  • Can Be Used As Counters
  • 4 kV ESD and EFT Protection
  • 3 kV Surge Protection for Power Input
  • Dual Watchdog
  • Power On Value Setting
  • Safe Value Setting
  • Short Circuit Protection
  • 3750 VDC Intra-Module Isolation
  • A Wide Range of Operating Temperature: -25 °C ~ 75 °C
  • RoHS Compliance


  • All kinds of On/Off Control
  • Industry automation
  • Industrial Machinery
  • Building Automation
  • Food & Beverage
  • Semiconductor Fabrication
  • Control system


Digital Input
Channels 8
Input Type Dry Contact: Source, Wet Contact: Sink or Source
Dry Contact Level Off Voltage Level : Open
On Voltage Level : Close to GND
Wet Contact Level Off Voltage Level : +4V max.
On Voltage Level : +10 V ~ +50 V
Input Impedance 10 K Ohms, 0.5 W
Counters channels : 8
Max. Counts : 16-bit (65535)
Max. Input Frequency : 100Hz
Min. Pulse Width : 5ms
Photo-Isolation 3750 VDC
Digital Output
Channels 8, Sink(NPN)
Output Voltage +3.5 ~ +50 V
Output Current 700mA per channel, Direct drive power relay module
Intra-module Isolation, Field to Logic 3750 VDC
Overvoltage Protection 60 VDC
Overload Protection Yes
Short-circuit and Overcurrent Protection 1.4 A
Thermal Overload trip temperature 150 °C
Interface RS-485
Format N, 8, 1
Baud Rate 1200 ~ 115200bps
LED Display
1 LED as Power/Communication indicator
8 LEDs as Digital Input indicators and 8 LEDs as Digital Output indicators (for I-7055D-NPN)
Input Voltage Range 10 ~ 30 VDC
Power Consumption 1.2W (I-7055-NPN)/2.2W (I-7055D-NPN)
Support Modbus and DCON Protocol Yes
EMS Protection
ESD (IEC 61000-4-2) ±4 kV Contact for each terminal,
±8 kV Air for random point
EFT (IEC 61000-4-4) ±4 kV for 8DO and Power
±2 kV for RS-485 port
Surge (IEC 61000-4-5) ±3 kV for power liner
Operating Temperature -25 ~ 75°C
Storage Temperature -40 ~ 85°C
Humidity 10 ~ 95% RH, non-condensing

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