CNC4PC C35S User manual

User’s Manual Page i
USER’S
MANUAL
VER.2
C35S- QUICK SETUP BREAKOUT
BOARD Rev. 2
MARCH 2018

User’s Manual Page ii
USER'S MANUAL
TABLE OF CONTENTS
Contents Page #
1.0 OVERVIEW.....................................................................................................................1
2.0 FEATURES.....................................................................................................................1
3.0 SPECIFICATIONS ..........................................................................................................2
4.0 BOARD DESCRIPTION..................................................................................................2
5.0 SPECIFICATIONS ..........................................................................................................3
5.1 Power Requirements.................................................................................................3
6.0 SELECTION JUMPER....................................................................................................3
6.1 Input (PULL-UP or PULL-DOWN)..............................................................................3
6.2 Pin_11.........................................................................................................................4
7.0 ESPECIAL FUNCTIONS.................................................................................................5
7.1 Safety Charge Pump "SCP". (Pin 17) .......................................................................5
7.2 Enable Pin..................................................................................................................6
8.0 FUNCTIONAL BLOCK DIAGRAMS ...............................................................................7
8.1 Pins 2-9 simplified block diagram............................................................................7
8.2 Pins 1,14,16 and 17 simplified block diagram .........................................................7
8.3 Inputs simplified block diagram...............................................................................8
9.0 PINOUT...........................................................................................................................8
10.0 WIRING DIAGRAMS.......................................................................................................9
10.1 Connecting Switches or push button.......................................................................9
10.2 Connecting NPN sensors........................................................................................10
10.3 Connecting PNP sensors........................................................................................12
11.0 DIMENSIONS................................................................................................................13

User’s Manual Page 1
1.0 OVERVIEW
This card uses the popular circuits found in the C35 with high power buffers that provide
very stable signals but in an industrial format to make it easy to implement control
boxes, it provides terminals and RJ45 for connections. This version of the C35can be
easily mounted on control boxes using DIN rails and can also accommodate ribbon
cables or DB25 connectors.
2.0 FEATURES
•IEEE 1284 Standard compatible.
•Easy connections with CNC4PC relay boards and speed control
boards.
•Microcontroller based SCHP.
•Works directly with popular CNC hardware and software.
•Easy way to connect to 4 stepper motor drivers by using Networks
cables. (Pins 2-9).
•All TTL 5VDC signals.
•Buffered inputs and outputs.
•Pluggable Screw-On Terminals. *NEW*.
•Output pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 14, 16, 17.
•Input pins 10, 11, 12, 13, 15.
•Status LEDs on all inputs and output connections.
•External Enable Pin (EN).
•DIN Rail mountable. *NEW*.

User’s Manual Page 2
3.0 SPECIFICATIONS
DIGITAL INPUT SPECIFICATIONS
On-state voltage range
2 to 5V DC
Maximum off-state voltage
0.8V
Maximum operation frequency
4 MHz
Typical signal delay
10nS
DIGITAL OUTPUT SPECIFICATIONS
Maximum output voltage
5VDC
Typical output current
50mA
Maximum off-state voltage
0.44 V
Maximum operation frequency
4 MHz
Typical signal delay
10 nS
Time of transition to high impedance state
120 mS*
*Time passed since a low in the ENABLE input is detected and the outputs are disabled.
4.0 BOARD DESCRIPTION

User’s Manual Page 3
5.0 SPECIFICATIONS
5.1 Power Requirements
It requires a 5VDC @ 500 milliamps power supply to operate. This power can be taken
from the computer’s power supply or USB port. Consider using the A3 – USB Power
Cable found under Accessories in the website.
WARNING
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 SELECTION JUMPER
6.1 Input (PULL-UP or PULL-DOWN)
Pins 10,11,12,13 and 15 can be set to pull-up or pull-down by selecting the jumper in the
appropriate position.
a. If a pin is pulled down, then it needs a high to make it change states.
b. If a pin is pulled up, then it is a ground what will make it change states.
1-2: PULL-DOWN 2-3: PULL-UP

User’s Manual Page 4
6.2 Pin_11.
If you connect sensors (A32 or A62), set jumper as sample in the image
If you connect board (C3 or C48), set jumper as sample in the image

User’s Manual Page 5
7.0 ESPECIAL FUNCTIONS
7.1 Safety Charge Pump "SCP". (Pin 17)
This board takes advantage of Mach ability to send a specific frequency through one of
the pins of the parallel port when the program is in control of the system. CNC
machinery can be very dangerous, and you could have a risk of the machine doing
something different that what you intend the machine to do if the program loses control
of your system. Mach be can be programmed in a way, so when it is “in control”, it
delivers a 12.5 KHz signal through one of the pins. This card lets you use this signal to
work as an On/Off switch for your system, enabling a powerful safety system for your
equipment. If you ever had windows crash on you, then this card is for you. The port
can also do weird things while the system is coming up, or down.
For Configuring the Charge Pump in Mach X:Use the dialog Config / Ports and pins / Output
Signals. Enable the Charge Pump output and configures it as is shown in the Fig. 8 Next,
press the apply button.
Fig. 1. Charge Pump configuration

User’s Manual Page 6
Selecting the SCHP operation mode
The Safety Charge Pump can be activated or deactivated depending on the jumper
position.
1-2: ON 2-3: OFF
Note: When the Safety Charge Pump is activated, the EN terminal is active and a valid
SCHP signal is present, pin 17 will go high. This high signal can be used to enable other
external devices, such as enabling other Breakout Boards, or relays that would enable
servos, VFDs, contactors, etc.
7.2 Enable Pin.
The card must be provided with a 5VDC signal to enable operation.
This feature has been added to externally control the status of the
outputs.When the enable signal is not present, output signals sent high
impedance state. If thisfunction is not required, a jumper can be placed
between +5vdc and the EN terminal. It has an internal 4.7kOhm pull-
down resistor.
Wiring:
The Parallel Port Interface Card has a very basic design that provides the flexibility you
look for on CNC projects.
WARNING: This card must have the power supplied while it is connected to the
PC. If power is removed to the card while it is connected to the PC, noise can be
introduced to the output lines. This can create a dangerous situation as relays or other
devices that might be connected to this card could get activated.

User’s Manual Page 7
8.0 FUNCTIONAL BLOCK DIAGRAMS
8.1 Pins 2-9 simplified block diagram
Fig. 2 Simplified functional block diagram for pins 2-9.
8.2 Pins 1,14,16 and 17 simplified block diagram
Fig. 3 Simplified functional block diagram for outputs 1, 14, 16 and 17.
Note: “Internal Enable” =“External Enable Pin” AND (“SCHP” OR “Bypassed SCHP”)
The “Internal Enable” is the result of an AND Operation between the “External Enable Pin” and
the SCHP operation mode selected by the user.
Note: The outputs will be deactivated if the board is not connected to the PC parallel port.

User’s Manual Page 8
8.3 Inputs simplified block diagram
Fig. 4 Simplified functional block diagram for inputs.
9.0 PINOUT

User’s Manual Page 9
PINS USED ON EACH RJ45 CONNECTOR.
10.0 WIRING DIAGRAMS
While this board supports only TTL +5VDC signals, different kind of sensors, switches
using different voltages can be connected using the diagrams that follow:
Note: The wiring below diagrams are an example, any input can be used for the connections.
10.1 Connecting Switches or push button.
Fig. 5 Wiring diagram to connect switches.
RJ45_1
Function
RJ45_2
Function
RJ45_3
Function
RJ45_4
Function
RJ45_5
Function
RJ45_6
Function
RJ45_7
Function
RJ45_8
Function
RJ45 PIN 1
Not Used
Not Used
Not Used
Not Used
GND
GND
GND
GND
RJ45 PIN 2
P.P. Pin 2
P.P. Pin 4
P.P. Pin 6
P.P. Pin 8
P.P. Pin 17
Not Used
Not Used
P.P. Pin 13
RJ45 PIN 3
Not Used
Not Used
Not Used
Not Used
P.P. Pin 16
Not Used
P.P. Pin 10
P.P. Pin 12
RJ45 PIN 4
GND
GND
GND
GND
P.P. Pin 1
P.P. Pin 16
P.P. Pin 11
P.P. Pin 11
RJ45 PIN 5
EN (5V)
EN (5V)
EN (5V)
EN (5V)
P.P. Pin 14
P.P. Pin 17
P.P. Pin 15
Not Used
RJ45 PIN 6
P.P. Pin 3
P.P. Pin 5
P.P. Pin 7
P.P. Pin 9
Not Used
Not Used
ENABLE
Not Used
RJ45 PIN 7
Not Used
Not Used
Not Used
Not Used
5V
5V
5V
5V
RJ45 PIN 8
5V
5V
5V
5V
Not Used
Not Used
Not Used
Not Used

User’s Manual Page 10
10.2 Connecting NPN sensors.
Fig. 6 Wiring diagram to connect NPN open collector proximity sensors.
Fig. 7 Wiring diagram to connect in parallel NPN open collector proximity sensors.
Connecting NPN open collector proximity sensor with the C35S
R1 Value (12V)
R1 Value (24V)
Approx. 10KΩ
Approx. 25KΩ

User’s Manual Page 11
Fig. 8 Wiring diagram to connect NPN proximity sensors with internal pull up resistor.
Some NPN proximity sensor has a pull-up resistor (R1) internally. It is necessary to
know its value in order to connect safely the sensor with the BOB. Follow this
recommendation:
Connecting NPN open collector proximity sensor with the C35S
(R1+R2) Value (12V)
(R1+R2) Value (24V)
Approx. 10KΩ
Approx. 25KΩ
CALCULATING THE R1 VALUE
Note: Rx is the unknown resistor value.
Where:
VEX is the external power supply voltage
Vis the voltage across the R resistor
RX = VEX.(R/V) - R (1)
A voltmeter is required to calculate the internal resistor value (Rx). Do the connections
as are shown in the figure above and do the calculations using the equation (1).
Note. R value has to be known to do this operation. A 4.7KOhm@1/2W is
recommended.

User’s Manual Page 12
10.3 Connecting PNP sensors.
Fig. 10 Wiring diagram to connect PNP proximity sensors
Connecting PNP proximity sensor with the C35S
R Value (12V)
R Value (24V)
Approx. 10KΩ
Approx. 25KΩ

User’s Manual Page 13
11.0 DIMENSIONS
All dimensions are in Millimeters.
Fixing holes (3.8mm).
DISCLAIMER
Use caution. CNC machines can be dangerous machines. Neither DUNCAN USA, LLC
nor Arturo Duncan are liable for any accidents resulting from the improper use of these
devices. This board 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.