USB support under GMFC with the GGC interface


GGC interface installation

Here is a picture of the GGC interface.

The GGC interface connects to the MM2001 using the parallel port, and to the PC via the USB cable. A USB cable of type B (printer type) is necessary.

After connecting the GGC interface, open the device manager. A new HID device of type HIDMMUSB should appear:

Now run GMFC (from version 3.89.14). Then open the dialog "GMFC/Table configuration". In the the "Driver and Hardware interface" frame, select "USB". The GGC parameters, such as its type and the timer value are automatically recognized.

Note that with the GGC interface, the timer frequency is specified internally. The timer value is either 10Khz (100us), 20Khz (50us) or 50Khz (20us) and is independent from the MM2001 timer. The timer dialog of GMFC is thus inactive.

If the wire heat is managed by the MM2001 interface, the heat precision is determined by the MM2001 timer. Its frequency should be set to 4Khz.

Details on configuring the GGC interface are described in the online documentation. Please read it carefully.

GMFC license and the GGC

The GGC V2 is supported by all GMFC versions. It's usage requiers a software add-on license of 25 euros in addition to the standard licence.

The GGC V2 interface provides an unique license key that is independent of the PC and disk formatting. To validate the USB licence, open the dialog "Help/About".

Now click on the "Get license" button.

Just send me the code, and I will mail you back a license key that will work on any PC. Therefore, the GGC can be shared easily within a club.

The 30 day test period is valid with the GGC board. After that period, you will have to enter the USB license key. You can also test the GGC interface using the ggc_utilityV2 program.

A GMFC license is associated to a single GGC/MMUSB interface. If you need several GGC/MMUSB interfaces, you must buy one GMFC license (and USB add-on) per interface.


The GGC interface is now sold by me, check the Registration page.

For US customers, the GGC is sold by Dan Field. Please contact him by email for shipping cost and order.