New version from PC to CNC Interface converter (BOB6) , connected to PC via parallel port and can control up to 6 stepper motors (X , Y , Z , V , A & B). General Description FIPBOB3M is a complete, buffered isolated parallel breakout board. It supports Eight output control signal groups to drive Six axis CNC machine with extra two duplicated auxiliary output control signals for X and Y axes. Each signal group supports two control signals (Direction and Clock). The most important featur of FIPBOB3M is the embedded switch mode power supply which generates all required voltages for the card. The breakout board provides total optical isolation of the PC parallel port from both power supply and Input control signals. Output control signals isolation is depend on the opto-isolation in stepper driver. FIPBOB3M supports five standard limit switches. Two output relays could be enabled via DIP switch for additional spindle and fan control and one analog output with two selected ranges (5V/10V) for controlling spindle speed. A very important feature of FIPBOB3M is the watchdog facility which disables all outputs until PC starts up and loads the controlling software. FIPBOB3M Features * AC 220V power input. * Eight output signal groups provides 6 axes control * Main X axis * Auxiliary X axis * Main Y axis * Auxiliary Y axis * Z axis * A axis * B axis * C axis * All outputs are opto-isolated with high speed photo coupler. * Each control signal group consists of Pulse “CLK” and Direction “DIR” Outputs. Control signals are TTL compatible (10mA).for pin assignment and addressing show table1. * LED indicator for * Output pulse signal “RED” for CLK output. * Output direction signal “Yellow” for DIR output. * Output relays “RED” for (Spindle , FAN) * Input signals ”Yellow”. * Output watchdog “Yellow”. * Power Supply “RED” for PC side and “Green” for Driver side(beyond the opto-isolators) * Five external inputs (Dry contact) for standard micro switches with additional socket for external proximity module. * All inputs are opto-isolated for safety. * Two output relays 12V coil / 3A contacts (resistive load) for spindle and FAN control. * One analog output (PWM) for controlling spindle speed. There are two selected ranges via DIP switch (5V and 10V). * Watchdog Facility with LED indicator to insure that all outputs are disabled during PC start up and loading the Software program that controlling the machine. * All outputs and inputs are brought out via pin header and pluggable screw clamp connector for flexibility. * Dimension: 183 x 130 x 23 mm * Main X axis * Auxiliary X axis * Main Y axis * Auxiliary Y axis * Z axis * A axis * B axis * C axis * Output pulse signal “RED” for CLK output. * Output direction signal “Yellow” for DIR output. * Output relays “RED” for (Spindle , FAN) * Input signals ”Yellow”. * Output watchdog “Yellow”. * Power Supply “RED” for PC side and “Green” for Driver side(beyond the opto-isolators)