Data Acquisition


  • Wet Contact, Source- or Sink-type Digital Inputs
  • PhotoMos Relay Outputs
  • photocoupler Isolation
  • No Arcing, No Bounce, and No Switching Noise
  • All DI Channels Can Be Used As 16-bit Counters
  • Configurable Power-on Value and Safe Value Settings
  • Dual Watchdog


The tM-P3POR3 provides 3 digital input channels and 3 PhotoMOS relay output channels, each of which features photocoupler isolation. All output channels are PhotoMOS relays, while the input is based on a sink- or source-type using a wire connection. All input channels can be used as 16-bit counters. There are options for configuring power-on and safe digital output values. PhotoMOS relays provide a faster response time, greater electrical endurance, and no spike. 4 kV ESD protection and 3750 VDC intra-module isolation are also provided.


• All Types of On/Off Control
• Industrial Automation
• Industrial Machinery
• Building Automation
• Food and Beverage Systems
• Semiconductor Fabrication
• Control Systems


 CPU Module
 Watchdog Timer Module, Communication (Programmable)


 Intra-module Isolation 3750 VDC for Digital Input
2000 VDC for PhotoMOS Relay Output


 EMS Protection
 EFT (IEC 61000-4-4) ±4 kV for Power
 ESD (IEC 61000-4-2) ±4 kV Contact for Each Terminal
±8 kV Air for Random Point


 LED Indicators
 Status 1 x Power and Communication


 Digital Input/Counter
 Channels 3
 Type Wet Contact
 Sink/Source (NPN/PNP) Sink/Source
 ON Voltage Level +3.5 ~ +50 VDC
 OFF Voltage Level +1 VDC Max.
 Max. Counts 65535 (16-bit)
 Frequency 100 Hz
 Min. Pulse Width 5 ms
 Input Impedance 10 kΩ, 0.66 W
 Overvoltage Protection 70 VDC


 Relay Output
 Channels 3
 Type PhotoMOS Relay
 Operate Time 5 ms Max.
 Release Time 0.5 ms Max.
 Electrical Endurance No Arcing, No Bounce, and No Switching Noise
 Power on Value Programmable
 Safe Value Programmable


 COM Ports
 Ports 1 x RS-485
 Baud Rate 1200 ~ 115200 bps
 Data Format (N, 8, 1), (N, 8, 2), (O, 8, 1), (E, 8, 1)
 Protocol DCON, Modbus RTU, Modbus ASCII


 Reverse Polarity Protection Yes
 Consumption 0.4 W Max.
 Powered from Terminal Block 10 ~ 30 VDC


 Dimensions (mm) 52 x 98 x 27 (W x L x H)
 Installation DIN-Rail Mounting


 Operating Temperature -25 ~ +75 °C
 Storage Temperature -30 ~ +75 °C
 Humidity 10 ~ 95% RH, Non-condensing



 tM-P3POR3     CR  3-channel Isolated DI (Wet) and 3-channel PhotoMOS Relay Module (RoHS) 1