Before we have talked about the characteristics of MACH3 and how it controls the motor output.
However, since Windows is not a real-time control system, it can only output a maximum pulse frequency of 100Khz through the parallel port. Obviously, this is enough for ordinary motors. But for motors that can support 200Khz and above, this is really bad news.
At the same time, the parallel port control card has the following disadvantages:
1. The speed and stability of the computer will affect the control effect of the output. As a result, the machining process is not stable and the motor may be fast and slow.
2. The output port and input port are limited to the IO of the parallel port, making it difficult for the user to add an interface.
3. The notebook and the new PC motherboard have begun to phase out the parallel port.
Fortunately, MACH3 also supports USB ports, network ports, etc. and this is significantly different from the parallel port:
1. The MACH3-USB control card does not need to consider that it must output a pulse on the parallel port within the specified time. This greatly reduces the work of MACH3. Therefore, it also reduces the requirements for the computer.
2. The maximum speed of the output pulse such as the USB port can be increased indefinitely. This is determined by the performance of the external interface card. Therefore, some USB port cards support a maximum pulse output of 200Khz and some support 400Khz. Whether it supports 2MHZ, it has nothing to do with MACH3.
Therefore, the MACH3 card based on the USB port has the following advantages over the parallel port card:
1. The operation is more stable.
2. Multiple IO ports can be input and output, and user expansion is easier.
3. Supporting the largest pulse output is much faster and more stable than the parallel port.
4. The distance of the USB transmission signal is farther and more stable than the parallel port.
Now more USB-based MACH3 sports cards are also available. In general, they are mostly standard external USB interface cards of MACH3. The basic functions are the same.
But our XHC control card has the following advantages:
1. Support the 6-axis machining system.
2. Support 4OOKhz maximum pulse output.
3. Support Step/Dir, PWM, analog voltage spindle motor control.
4. Anti-interference isolation processing for data communication lines. It can be adapted to high-power servo motor drive systems.
We specialize in providing CNC controllers that adapt to MACH3 software.
We support a global fast delivery service for your order. And you could also visit our store in the Aliexpress.com NewCarve store.
If you have any questions, please feel free to contact us:
Email: icnccontroller@gmail.com
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