CNC4PC C94 Multifunction CNC Board
USER’S MANUAL VER.1
C94- MULTIFUNCTION CNC BOARD Rev. 2
FEATURES
- Can ship the UC300ETH Motion Controller installed when purchased as a bundle
- Emulates 5 Parallel Ports.
- 3 Expansion Ports for connecting additional breakout or relay boards.
- Two Analog Inputs and Two Outputs.
- Built-in PWM-Based Speed Control and Two Built-in Electromechanical Relays with NO and NC positions for spindle control.
- The system monitors:
- E-Stop
- Safety Charge Pump.
- Electromechanical Relay with NO and NC positions for general purpose or tied to the Enable Signal (Port_2 16 or 17, jumper-selectable).
- Microcontroller based Safety Charge Pump (SCHP).
- Optoisolated inputs working at 5-24VDC.
- Uses a single +10 to +30VDC to power the system. It generates the isolated voltage for the spindle control circuit and +5vdc for circuits using TTL logic.
- Status LEDs on all Input and Output connections.
- DIN Rail mountable.
- Open Collector Outputs pins 1, 14, 16, 17 on port 2.
- Screw-On connections for all terminals.
- Status LEDs for enable.
- Driver Fault Detection *New
I/O SPECIFICATIONS
Inputs and Outputs are jumper selected to be TTL or Open collector.
| PINS | PORT1 | PORT2 | PORT3 | PORT4 | PORT5 | TOTAL |
| INPUT | 5 | 13 | 13 | 5 | 13 | 49 |
| OUTPUT | 12 | 4 | 4 | 12 | 4 | 36 |
| TOTAL | 17 | 17 | 17 | 17 | 17 | 93 |
| OPTOISOLATED DIGITAL INPUT TTL SPECIFICATIONS | |
| On-state voltage range | 5 to 24VDC |
| Maximum off-state voltage | 0.8V |
| Typical signal delay | 2.8uS |
| DIGITAL OUTPUT TTL SPECIFICATIONS | |
| Maximum output voltage | 5VDC |
| Maximum output current | 50mA |
| Maximum off-state voltage | 0.44 V |
| Maximum supported frequency | 400KHz |
| Typical signal delay | 10nS |
| Time of transition to high impedance state | 12 s* |
| OPEN COLLECTOR OUTPUT SPECIFICATIONS | |
| Maximum output voltage | 60VDC |
| Maximum output current | 2A |
| Typical signal delay | 0.5 µS |
| ENCODER INPUT | |
| On-state voltage | 5 VDC |
| Maximum off-state voltage | 0.8V |
| Typical signal delay | 2.8uS |
| Rise / Fall Time (Typ) | 50ns – 12ns |
BOARD DESCRIPTION
POWER TERMINALS AND CONFIGURATION
Power terminal
Regulated +10VDC or +30VDC at 2 Amps is required to power this board. Additional amperage must be supplied if sourcing current on the open collector outputs or using the Expansion IDC26 ports to power breakout or relay boards.
WARNING
Check the polarity and voltage of the external power source and connect the 10VDC to 30VDC and GND. Overvoltage or reverse-polarity power applied to these terminals can cause damage to the board, and/or the power source
Source Output 5VDC
The board can supply regulated voltage to power external devices or circuits.
Source Output 10-30VDC
10-30VDC can be sourced to sensors or other cards requiring it.
DRIVER FAULT DETECTION
In order to start the driver monitoring function, it is necessary to connect the driver Alarm to ERR terminal.
WIRING DRIVER FAULT DETECTION 
WIRING DRIVER FAULT DETECTION 
| LPT 3 and LPT 5 | |
| Equivalent P.P. Pin | UC300 Function |
| P_1 | OUTPUT |
| P_2 | INPUT |
| P_3 | INPUT |
| P_4 | INPUT |
| P_5 | INPUT |
| P_6 | INPUT |
| P_7 | INPUT |
| P_8 | INPUT |
| P_9 | INPUT |
| P_10 | INPUT |
| P_11 | INPUT |
| P_12 | INPUT |
| P_13 | INPUT |
| P_14 | OUTPUT |
| P_15 | INPUT |
| P_16 | OUTPUT |
| P_17 | OUTPUT |
| P_18 | ENABLE |
NOTE:
Output pin 18 can be used to enable expansion boards
LPT_4 OUTPUT EXPANSION PORT
| LPT 4 | |
| Equivalent P.P. Pin | UC300 Function |
| P4_1 | OUTPUT |
| P4_2 | OUTPUT |
| P4_3 | OUTPUT |
| P4_4 | OUTPUT |
| P4_5 | OUTPUT |
| P4_6 | OUTPUT |
| P4_7 | OUTPUT |
| P4_8 | OUTPUT |
| P4_9 | OUTPUT |
| P4_10 | INPUT |
| P4_11 | INPUT |
| P4_12 | INPUT |
| P4_13 | INPUT |
| P4_14 | OUTPUT |
| P4_15 | INPUT |
| P4_16 | OUTPUT |
| P4_17 | OUTPUT |
| P4_18 | GND |
ANALOG I/O PORT PINOUT
The analog port contains 2 analog inputs and 2 analog outputs. This port also contains a 5Volts power output.
| Pin | Signal direction |
| 1 | 5 Volt output |
| 2 | Ground |
| 3 | Analog input 1. |
| 4 | Analog input 2. |
| 5 | Ground |
| 6 | Analog output 1. |
| 7 | Analog output 2. |
| 8 | 5 Volt output |
| 9 | 5 Volt output |
| 10 | Ground |
| 11 | Analog input 1. |
| 12 | Analog input 2. |
| 13 | Ground |
| 14 | Analog output 1. |
| 15 | Analog output 2. |
| 16 | 5 Volt output |
NOTE:
The analog signals are 0-3vdc and the discrete signals are also 0 or 3.3VDC. Keep in mind these signals are unbuffered and go directly to the pins of the uC. So be very careful by using them, make sure you do not exceed the rated voltage or allow a voltage differential to get to the pin.
E-STOP TERMINAL (24V)
Connect an E-STOP push button as is shown in the below images. 
Pin 10 port 1 is used for E-Stop. Since this board controls the enable line, and the enable line is the one responsible for notifying the controller of the e-stop condition, the user does not have a direct access to the pin itself, just to the e-stop terminal on the board. The E-Stop terminal is tied to the enable line and will trigger the e-stop. A fault or E-Stop triggers a low for 5 seconds to notify the controller of the fault condition, then resets to high again
CONFIGURATION JUMPERS
Selecting the SCHP operation mode
The Safety Charge Pump can be activated or deactivated depending on the jumper position. If the SCHP is enabled, the board will require the SCHP coming from the controller to be present in order to get activated (green LED).
Configuration jumper mode US or INT 
For the Variable speed control go to
http://cnc4pc.com/Tech_Docs/VARIABLE_SPEED_CONTROL.pdf
For Configure the control software go to
http://cnc4pc.com/Tech_Docs/CONFIGURATION_OF_CONTROL_SOFWARE.pdf
For Replacing Potentiometer go to
http://cnc4pc.com/Tech_Docs/Replacing%20a%20Potentiometer.pdf
Relay 3 Operation can be assigned to pins 16 or 17 on port 2.
If assigning the relay to pin 17 on port 2 and using the Safety Charge Pump, then the relay will activate with the board activates. This can be very useful as it can be used to activate the main contactor for the system or relays that activate devices.
GENERAL PURPOSE OUTPUT TERMINALS
Open Collector Outputs Sample Wiring
LEDs
WIRING SAMPLE FOR INPUT PORT_1 AND PORT_2
AXES WIRING SAMPLE
WIRING SAMPLE VFD
DIMENSIONS
All dimensions are in Millimeters
Disclaimer:
Use caution. CNC machines can be dangerous machines. Neither DUNCAN USA, LLC 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.
Documents / Resources
 | CNC4PC C94 Multifunction CNC Board [pdf] User Manual C94 Multifunction CNC Board, C94, Multifunction CNC Board, CNC Board, Board |
 | CNC4PC C94 Multifunction CNC Board [pdf] User Manual C94 Multifunction CNC Board, C94, Multifunction CNC Board, CNC Board |
