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CP-IO22 PNP - IO Board Accessory for the ComfilePi 40 pin header

The CP-IO22 PNP is an IO board accessory for the ComfilePi consisting of 22 IO (11 bipolar inputs, 11 PNP outputs), screw terminals, and corresponding indicator LEDs. It can be mounted to the rear panel of the CPi-A/B/S series panel PCs.

This product is not compatible with the CPi-C series panel PCs.

If you need NPN outputs, please use the CP-IO22.

Warnings and Precautions

Coming Soon

C#/VB.Net Control Example

The following is an example project illustrating how to program the CP-IO22 in C# or VB.Net using the Mono Framework. The same software can be used to control the CP-IO22 or the CP-IO22 PNP.

Source Code

This example application uses the following .NET libraries to control the digital inputs and relays.

System.Device.Gpio

Python Example

The pigpio library also has a Python interface.

The following is an example illustrating digital inputs and outputs:

import pigpio
 
pi = pigpio.pi()
 
pi.set_mode(4, pigpio.INPUT)
pi.set_mode(17, pigpio.OUTPUT)
 
while True:
    if pi.read(4):
        pi.write(17, 1)
    else:
        pi.write(17, 0)
 
pi.stop()

Pin Map

The CP-IO22 pins are connected to the ComfilePi's GPIO header as shown below.

Inputs: GPIO 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16
Outputs: GPIO 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27

Specifications and IO Circuitry

Input Voltage: 5VDC (powered by ComfilePi's 5V pin)
Current Rating: 100mA or more
Humidity: 35 ~ 85% RH
Temperature: -10 ~ 60 ℃
Size: 128mm X 78mm

Inputs

Bipolar relative to COM x 11
Voltage Range: 12 ~ 24V
Absolute Min/Max Voltage Range: 3.3 ~ 28V
Response Time: 5ms
Input OFF Level: <1.8VDC
Input ON Level: >2.5VDC
Indicator LED OFF Level: <4.5V
Indicator LED ON Level: >5.0V

Outputs

DC Output Sink (PNP) x 11
Maximum Output Voltage: 24VDC
Response Time: 10ms
Current: 100mA
Minimum Load Resistance: 270Ω

To avoid damage to the product, please be sure to use a load resistance greater than 270Ω.

Setting the Initial IO State

It may be necessary to modify the ComfilePi's initial GPIO output state to prevent the ComfilePi from turning the outputs ON when the ComfilePi boots.

Modify the ComfilePi's /boot/config.txt file with the following configuration to set the initial IO state. See GPIO control in config.txt for more information.

gpio=4-13=ip
gpio=16=ip
gpio=17-27=op,np,dl

COMFILE Technology's Documentation Library

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