Data Acquisition


  • 4-channel Sink-type Digital Inputs
  • 4-channel Source-type Digital Outputs
  • photocoupler Isolation
  • All DI Channels Can Be Used As 16-bit Counters
  • Configurable Power-on Value and Safe Value Settings
  • Dual Watchdog


The tM-P4A4 provides 4 channels for digital input and 4 channels for digital output, each of which features photocoupler isolation. The tM-P4A4 supports source-type output with short circuit protection, while the input is sink-type. All input channels can be used as 16-bit counters. There are options for configuring power-on and safe digital output values. 4 kV ESD protection and 3750 VDC intra-module isolation are also provided.


• All Kinds 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


 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 4
 Type Wet Contact
 Sink/Source (NPN/PNP) Sink
 ON Voltage Level +4.0 ~ +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


 Digital Output
 Channels 4
 Type Isolated Open Collector
 Sink/Source (NPN/PNP) Source
 Load Voltage +10 ~ +40 VDC
 Load Current 650 mA/channel
 Overvoltage Protection 47 VDC
 Overload Protection 1.4 A
 Short-circuit Protection Yes
 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 0.5 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-P4A4     CR  4-channel Isolation DI (Wet) and 4-channel Isolated DO (Source, PNP) Module (RoHS) 1