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DigiSpeed-GX™
5 Quick Start Guide – PWM Mode
This section is intended to allow you to quickly setup and verify the operation of your
DigiSpeed-GX™ controller with Mach3 for use in PWM mode. Initially, this will be done
with the DigiSpeed-GX™ unit being connected to computer but not your Motor Drive.
Once you are familiar with the operation of the DigiSpeed-GX's operation, it can then be
connected to the motor drive.
The DigiSpeed-GX™ circuitry is essentially in two parts. One part contains low voltage
logic level circuitry that includes a micro controller and interfaces to the PC via the parallel
port. It is supplied by 5Vdc that is referenced to the PC parallel port ground. The other part
of the DigiSpeed-GX™ circuitry is connected to the DC Speed controller control circuitry.
This part is at MAINS POTENTIAL.
The quick start setup will verify the connection to the Microprocessor and logic side of the
DigiSpeed-GX™ controller.
5.1
What you need
To get started, you need:
DigiSpeed-GX™ controller.
•
Breakout board or other mechanism for connecting the DigiSpeed-GX™ control
•
lines to the Computer Printer port.
A PC with a printer port and Mach3 installed and running.
•
This quick start setup is done with the DigiSpeed-GX™ unit sitting on the bench and NOT
connected to your Motor controller.
Mach3 controls the DigiSpeed-GX™ in PWM mode only. Therefore you need to place
jumper JP1 into the mode selection jumper block.
5.2
Mach3 Configuration Setup
The example setup describes how Mach3 is configured for the DigiSpeed-GX™. Your
configuration may differ depending on what Printer Port number you are using, and what
pins in the port are connected to which DigiSpeed-GX™ pins.
For this example, printer port 2 is being used with the port pins connected as shown in
Table 2 below.
Notes:
1. It is advisable to use a breakout board between the Printer port and the DigiSpeed-GX™.
2. The 5V supply for the DigiSpeed-GX™ must be obtained from the breakout board, as it cannot be
supplied from the printer port.
Copyright 2006 ©
- Users Guide
Homann Designs
Page 13
Revision 0.1
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