PC Parallel Bus for CNC Machine: Is it Possible?

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Discussion Overview

The discussion revolves around the feasibility of using a PC's parallel bus to communicate with a CNC machine, specifically in the context of a final year project. Participants explore potential solutions for driving motors in a CNC machine after the original communication card is no longer available.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the specific model of the CNC machine to provide tailored assistance.
  • The original poster specifies that the CNC machine is a small model (Feedback 926) with three stepper motors.
  • Another participant suggests that if the motors can be isolated from the original controller, off-the-shelf controllers could be used to drive them, indicating that there are affordable options available.
  • There is a proposal to write a custom program to control the motors via the parallel port, although this is noted to be more challenging than using a pre-existing controller.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the best approach, as there are multiple suggestions and considerations regarding the use of the parallel bus and alternative controllers.

Contextual Notes

Participants have not fully explored the limitations of isolating the motors or the specific requirements for programming the parallel port, leaving some assumptions unaddressed.

gimini75
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Hi

I have a project to do it in my final year, the project is to develope a program to drive motors in a CNC machine, the problem is this CNC machine has it's own card (hardware&software) to be installed in a PC bus to comunacte with the CNC machine but this card is missing and the company which was making this type of CNC machine will no longare producing it, now I want again to communicate with CNC machine from the parallel bus inside the PC is it possible, Iam not sure.

Thanks
 
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Maybe, what model cnc is it?
If it is fanuc or a jema standard machine I might be able to help you.
 
Hi
Thanks for your reply, the CNC machine which Iam using it in project is a small CNC machine (Feedback 926) with 3 stepper motor.
 
I haven't heard of Feedback. But if you are allowed to isolate the motors from the
controller you can use any off the shelf controller to drive them. There are used
logic controllers available (cheap and easy). Or, you could write your own program to control them with the parallel port (cheaper but not so easy).

Google it. There are many options.
 

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