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PCI-BUS Isolated 32 digital input and 32 Open-Collector output Board

Functional Description

The PISO-P32C32 has 32 channels of optically isolated digital inputs and 32 channels of optically isolated digital outputs, arranged into four isolated banks. Each input channel use a photo-coupler input which allows either internal isolated power supply or external power selected by jumper. Each digital output offers a darlington transistor and integral suppression diode for inductive load. Isolated input channels 0-15 are designed into group A and channels 16-31 are designed into group B. Isolated output channels are designed into group C and Group D. The power supply of the input port may use the external power or the power from the PC side using DC/DC converter. The power supply of the output port should use the external power. This interface board is easily installed in any PC. The board interface to field logic signals, eliminating ground-loop problems and isolating the host computer from damaging voltages. The PISO-P32C32 has one 37-pin D-Sub Connector and one 40-pin male header. The 40-pin to DB-37 flat cable is used to fix with the case. The user can connect the digital signal through the second  D-Sub connector . Each D-Sub connector contains 16 input channels and 16 output channels. 


Isolation Input

  • Type : Isolated current input

  • Isolation Voltage : 3750V( Using External Power); 3000V ( Using internal Power)
  • Input voltage : 3.5V to 30V

  • Input impedance : 3K (DC 24V, 7.67mA) for each channel )
  • Response time: 10Khz Max

 Isolation Output 

  •  Type : Isolated open collector : 100mA per channel
  •  External voltage : 30V (Max.)
  •  Response time: 10Khz Max
  •  Power requirements : +5V, 600mA (typical)

General Environmental

  • Operating temp. :  0-50C
  • Storage temp. :    -20  to  70C
  • Humidity:       0 to 90%  non-condensing
  • Dimensions: 180 mm x 105 mm


  •  Factory Automation
  •  Product Test
  •  Laboratory Automation

Pin Assignment


  •  32-channel optically isolated digital input
  •  32-channel optically isolated digital output /open collector 
  •  DC/DC converter built-in
  •  Four isolated bank. 
  •  3000V DC isolation voltage
  •  Interrupt level: 
  •  Interrup source : 
Ordering    Information
  • PISO-P32C32 :  32-channel isolated Digital Input and  32-channel isolated Digital Output Board
  • Includes software : NAPDOS


  • DB-37:  Directly connect signals to the back of  ISO-P32C32
  • DN-37:  I/O Connector Block with DIN Rail Mounting and 37-PIN D-SUB Connector

Budapest / Hungary
1173 Kaszáló u 40
Mobil:  +36-20-5922404

e-mail: sales