📄 USER’S MANUAL C80 - Rev. 2

 

 

          C80- EXPANSION BOARD Rev. 2

 

                                                                                               MAY, 2025

 

 TABLE OF CONTENTS

  

 

1.0         OVERVIEW

This card provides an easy way to connect your inputs and outputs from your port using an LPH26-pin ribbon Cable or a parallel port. It provides terminals for connections and condition signals for use in CNC applications. This version can be easily mounted on control boxes using DIN rails and accommodate ribbon cables or DB25 connectors.

 

2.0         FEATURES

 

  • Terminal Block for all I/Os.
  • Expansion port for the Board. Connect the C76 or ESS expansion board.
  • Open collector Outputs pins optoisolated 2, 3, 4, 5, 6, 7, 8, 9, 1, 14, 16, 17.
  • Input pins 10, 11, 12, 13, 15.
  • Terminal Block input with close-by ground or +5VDC connections, COM, and outputs with + 24VDC and ground
  • Status LEDs for enabling.
  • Fully Optoisolated Inputs and Outputs.
  • External Enable Pin.
  • Din rail mountable.
  • Pluggable Screw-On Terminals.


3.0         SPECIFICATIONS

DIGITAL INPUT SPECIFICATIONS

Maximum off-state voltage

0.8V

Maximum operation frequency

4 MHz

Typical signal delay

10nS

 

DIGITAL OUTPUT OPEN COLLECTOR SPECIFICATIONS

Maximum output voltage

(24V power supply voltage)

Typical output current

6A

Maximum operation frequency

4 MHz

Typical signal delay

0.25 µS

Time of transition to high impedance state

12 s*

 

4.0         BOARD DESCRIPTION

 

  

5.0         REQUIREMENTS

5.1    Power Requirements

 

Regulated +5VDC and + 24VDC are required to power this board.

⚠️

Check the polarity and voltage of the external power source and connect the 5VDC and GND. Overvoltage or reverse-polarity power applied to these terminals can cause damage to the board, and/or the power source.

 

6.0         POWER TERMINAL

 

To preserve optoisolation, two independent power sources should be used: a +5VDC to power the optos that interact with the controller (a USB cable) and a +24VDC at 200mA to power the board.

💡

It can be powered by using Pin 26 of the IDC26


❌

The +5vdc can be supplied through pin 26 on the IDC26.  If supplying +5vdc through the IDC26, do not apply +5vdc externally as it will damage the board.


6.1    Enable pin.

 The card must be provided with a 24VDC signal to enable operation. This feature has been added to externally control the status of the outputs. An external switch or a Safety Charge Pump can be added to provide the enabling signal. If this function is not required, a jumper can be placed between 24VDC and the EN terminal.

 


7.0         LED INDICATOR

 

The power LED lights indicate that the system is ready but disabled. When the Status LED (Green LED) lights, it indicates that the system is enabled.

 

 3 conditions need to be met to get the STATUS LED to light:

  1. The board needs to be powered.
  2. The Enable terminal requires +24V DC from the jumper.  The board ships with a jumper cable.
  3. The IDC26 connector must be connected to provide a ground signal from pin 18 to pin 19.  This validates that the board is connected to a controller.

8.0         PINOUT

8.1    Pin Numbering  

                                           



8.2    IDC26

IDC26 PIN LPT port direction signal
1 Output 1
2 Output 2
3 Output 3
4 Output 4
5 Output 5
6 Output 6
7 Output 7
8 Output 8
9 Output 9
10 Input 10
11 Input 11
12 Input 12
13 Input 13
14 Output 14
15 Input 15
16 Output 16
17 Output 17
18 Watchdog (Ground to Enable)
19 - 25 GND
26 +5VDC

COMPATIBILITY Regular Parallel Port, ESS, 5LPT, C76, UC100


9.0         CONFIGURATION SWITCHES

9.1    Connecting Switches Using the COM = 12/24VDC

 

There is a jumper that allows you to select +12/24VDC or GND for the COM pins.

While this board supports input +24VDC signals, different kinds of sensors and switches using different voltages can be connected using the diagrams that follow:

💡

This board has one Input bank, (pins: 10, 11, 12, 13, and 15) and (dedicated outputs: pins 1, 14, 16, and 17 or 2-9), and all the inputs of the same bank have the same configuration. The below wiring diagrams are an example, any input can be used for the connections.

        

Fig. 1 Wiring diagram to connect switches.

❌

The +5vdc can be supplied through pin 26 on the IDC26.  If supplying +5vdc through the IDC26, do not apply +5vdc externally as it will damage the board.


9.2    Connecting Switches Using the COM = GND

 

Fig. 2 Wiring diagram to connect switches.

❌

The +5vdc can be supplied through pin 26 on the IDC26.  If supplying +5vdc through the IDC26, do not apply +5vdc externally as it will damage the board.


10.0     EXAMPLE WIRING OPTOISOLATED OUTPUT

 The power source of 12/24 VDC is for the correct functioning of the outputs of (2-9) and (1,14,16,17).

 

❌

The +5vdc can be supplied through pin 26 on the IDC26.  If supplying +5vdc through the IDC26, do not apply +5vdc externally as it will damage the board.


11.0     WIRING DIAGRAM SENSORS

11.1  Connecting PNP sensors.

Fig. 3 Wiring diagram to connect PNP open collector proximity sensors.

❌

The +5vdc can be supplied through pin 26 on the IDC26.  If supplying +5vdc through the IDC26, do not apply +5vdc externally as it will damage the board.


11.2  Connecting NPN sensors.

 

Fig. 4 Wiring diagram to connect in parallel NPN open collector proximity sensors.

❌

The +5vdc can be supplied through pin 26 on the IDC26.  If supplying +5vdc through the IDC26, do not apply +5vdc externally as it will damage the board.


12.0     DIMENSIONS

 

 

All dimensions are in Millimeters.

Fixing holes (4mm).


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DISCLAIMER

Use caution. CNC machines can be dangerous. Neither CNC4pc nor Arturo Duncan is liable for any accidents resulting from the improper use of these devices.  This product is not a fail-safe device, and it should not be used in life support systems or in other devices where its failure or possible erratic operation could cause property damage, bodily injury, or loss of life.