#CNC PARALLEL PORT CNC PC#
CN5, CN6: 5V DC Supply input for PC side of isolation.Screw Terminals for all outputs and inputs.All Outputs are buffered and optically isolated.After a few months my dell computer broke down and I didn’t want to get a new one. On Board USB Connector for Supply from PC or other source With these items, you could not drive a CNC using the parallel port off of an old computer.PC817 Opto-coupler for Inputs and Output Controls.High Speed Opto-coupler s 6N137 on all outputs.25 D SUB Male Connecter for PC LPT Port Interface.Supply 7V to 36V DC output side of opt-coupler.Note: For 24V inputs replace R10, R12, R13, R15, and R16 with 2K2 Ohms. All inputs has 470E for TTL Voltage input required driving the inputs. The board has 12 output pins that can control various devices such as stepping motor drivers, Plasma Torch, Pump for coolant, spindle, 5 Input pins are provided for limit or home switches, feedbacks, Emergency switch. USB connector and CN5 Screw terminal provided for PC side power supply input and CN4 for output side power supply 7 to 36V DC. The Opt coupler and inverter require power supply at both PC side and output side. All outputs are optically isolated and inverse, all inputs are optical isolated and can be used as emergency switch, limit switch, home switch and feedbacks.
The board has been tested with MACH3 CNC software.
#CNC PARALLEL PORT CNC DRIVER#
O Input signals ”XL”,”YL”,”ZL”,”EMR” and ”PRB” (Yellow LED).Optically isolated parallel port break out board designed for Hobby CNC, Routers and Motion controller, This Board is an easy solution to drive stepper Motor driver through PC parallel port, The Board is compatible with various CNC software specially made for LPT port data output. In a stepper motor based table, each axis needs at least 2 pins, one for step direction and the other for step increment. Depending on the software, the parallel port has 10 or more pins we can use to interface with out CNC table. O Output relays “spindle”, “fan” and “watchdog” (RED LED). Most of the hobby CNC software and stepper controllers use the PCs parallel port to send the signals back and forth. O Output direction signal “DIR” output (Green LED). O Output pulse signal “CLK” output (RED LED).
All outputs and inputs are brought out via pluggable screw clamp connector for flexibility.Watchdog facility with discrete relay output to insure that all outputs are disabled during PC starting up and software program loading.One analog output (PWM-controlled) for controlling spindle speed.Two output relays for spindle and Fan control (3A maximum contact current).All inputs are optically isolated for safety.Three inputs for axes limits (NPN Proximity sensors or micro switch inputs) and two inputs for emergency stop and probe inputs (dry contact). For pin assignment and addressing refer to table1. Control signals are TTL compatible (10mA).CNC USB MACH3 100Khz Breakout Board Hand Control Box for 4 Axis Interface. 6 axes control signals (Pulse ”CLK” and Direction “DIR”) 5 axis CNC Breakout Board Stepper Motor Driver MACH3 Parallel Port Control.Completely supports MACH3 and any other softs that use LPT port.This relay works in conjunction with watchdog signal to allow control of external devices. PPIC1 includes an analog output (0-10V) for controlling spindle speed.Ī very important feature of PPIC1 is the watchdog facility, which disables all outputs until PC is powered and oftware starts up (activating this feature requires a software that supports watchdog facility such as MACH3).Īdditional relay is included to provide external safety. Two output relays are added for spindle and fan control. One of the most important features of PPIC1 is embedded switch mode power supply which provides all the required supply voltages eliminating the need for specific external power source.Output control signals (pulse and direction) should be optically isolated on stepper motor driver. External Input signals are optically isolated from the PC parallel port for safety. It supports up to 6 axes CNC machine control signals pulse/direction for each axis) with extra two duplicated auxiliary output control signals for X and Y axes.PPIC1 supports five inputs to define X, Y and Z axes limits using switches or proximity NPN sensors, in addition to two inputs for emergency and probe or any other inputs. PPIC1 is a complete buffered CNC breakout board. PPIC1 – CNC Parallel Port Interface Card 6 Axis CNC Breakout Board