For engineers and machine integrators, the specs matter. Below are the critical parameters for the Weihong CNC Adaptor PCIMC 3D 67:
One of the primary functions of this adaptor is opto-isolation. Industrial environments are electrically noisy; high-voltage spikes from spindle motors or VFDs (Variable Frequency Drives) can travel back up the line and destroy sensitive PC components. The PCIMC 3D 67 physically isolates the PC’s motion card from the machine tool’s drivers, protecting the computer from high-voltage surges.
With the rise of Ethernet-based motion controllers (Mechatrolink, EtherCAT), why would a shop still invest in a PCI-based Weihong CNC Adaptor PCIMC 3D 67? Three reasons: Weihong Cnc Adaptor Pcimc 3d 67
The Weihong CNC Adaptor PCIMC 3D 67 is a high-speed motion control interface card designed to bridge Weihong’s PC-based CNC software (such as NK300 or NcStudio) with external servo drives, stepper drivers, I/O modules, and spindle inverters.
Unlike generic USB-to-parallel converters, the PCIMC 3D 67 is a dedicated PCI (Peripheral Component Interconnect) or PCIe-adapted motion controller. It handles real-time pulse generation, interpolation, and closed-loop feedback without burdening the host computer’s CPU. For engineers and machine integrators, the specs matter
In the world of computer numerical control (CNC) machining, the reliability and precision of the motion control system are paramount. Weihong, a prominent Chinese manufacturer of CNC controllers, has long provided cost-effective solutions for routers, mills, lathes, and plasma cutters. Central to their PCI-bus control system is the PCIMC-3D-67 adaptor—a dedicated interface card that bridges the control software running on a standard PC with the drives, sensors, and actuators of a CNC machine.
This article provides a detailed technical overview, installation guidelines, common failure points, and troubleshooting advice for the Weihong PCIMC-3D-67 adaptor. For engineers and machine integrators
| Pin(s) | Signal | Description | |--------|--------|-------------| | 1-4 | X_STEP+, X_DIR+ | X-axis step/dir differential pair | | 5-8 | X_STEP-, X_DIR- | Complementary signals | | 9-12 | Y_STEP+, Y_DIR+ | Y-axis | | 13-16 | Y_STEP-, Y_DIR- | | | 29-32 | Z_STEP+, Z_DIR+ | Z-axis | | 33-36 | Z_STEP-, Z_DIR- | | | 43-44 | +24V_IN | External power for I/O | | 45-46 | GND | Power ground | | 47-58 | Input signals (IN1-IN12) | Limit switches, probe, etc. | | 59-64 | Output signals (OUT1-OUT6) | Spindle relay, coolant, etc. | | 65 | SPINDLE_ANALOG | 0–10V output | | 66-67 | Encoder Z+/- | Index pulse for spindle/axis |
Note: Full pinout depends on Weihong’s specific revision; always refer to the manual for your exact model.