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The GGC V3 adapter is an intelligent USB converter for driving a step
motor
interface.
interfaces, such as the MM2001, and the MDLCNC bipolar motor controller.
1. Functionalities
The functionalities of the GGC V3 adapter are:
Generation of a unique GMFC license key, independent of the PC and
disk formatting.
Works under any Windows version that supports USB from Win98 to
Windows 10.
10,
20,
or
accelerations. The internal timer supports motor interfaces that
don't have a timer.
Compatible with most existing step/dir unipolar and bipolar motor
interfaces. Fully configurable Dir/Step outputs. Motor Enable on
parallel port pin 1 or 17, with High/Low active level.
Internal wire heat circuits.
Optional LCD display. The GGC V3 support LCDs with 1 or 2 lines of
16 characters and the RepRap LCD with 4 lines of 20 characters.
Automated recognition of the GGC parameters by GMFC (from version
3.89.14).
Full compatibility with the former MMUSB interface.
Programming of the MM2001 PIC firmware. The V5.1 or MM2001_GGC
versions of the MM2001 firmware are mandatory to work with the
GGCV3 interface.
GGC V3 documentation
V3.00 - 16/10/2020
The
GGC
drives
50
KHz
internal
most
step/dir
compatible
timer
for
implementing
motor
smooth
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Summary of Contents for gMFC GGC V3
- Page 1 Internal wire heat circuits. Optional LCD display. The GGC V3 support LCDs with 1 or 2 lines of 16 characters and the RepRap LCD with 4 lines of 20 characters. Automated recognition of the GGC parameters by GMFC (from version 3.89.14).
- Page 2 M", this screen is displayed during normal functioning. H50% shows the current heat (here, 50%), MAN (or PC) shows the position of the PC/MAN switch of MM2001 interface. M (if displayed) shows that the motors are powered on by GMFC.
- Page 3 3. GGC Mode In GGC mode, two different command panels are supported: the BP button and the RepRap panel. 3.1. The BP Button panel The BP panel must be made by the user. The BP panel relies on three push buttons BP+, BP-, Reset, the led LEDHeat and 3 switches HeatOn, PC/MAN and MotorOn.
- Page 4 100%. Pressing on BP- and BP+ again will exit this menu. Note, that with versions of GMFC above 4.0, the maximum heat value is specified in the table configuration dialog of GMFC and overrides the maximum value in the GGC.
- Page 5 3.2. The RepRap panel The RepRap panel contains a 4 line LCD, a rotary selector with a press button, and a reset button. The RepRap panel must be connected to the GGC through the GGC LCD adapter which has to be bought in addition to the GGC. The adapter provides the LEDHeat, and is ready to use.
- Page 6 The maximum heat prevents breaking the wire if it does not support a heat value of 100%. Pressing on the selector again will exit this menu. Note, that with versions of GMFC above 4.0, the maximum heat value...
- Page 7 H050% shows the current heat value (here, 50%), PC/GGC tells that the heat value is given by the GGC or by the PC (GMFC). In GCC heat mode, the value can be adjusted by the BP+ and BP- buttons. M* shows that the motors are powered on. This means that GMFC is running a heat command.
- Page 8 This is the value of the maximum heat value. It is adjusted by the rotary buttons. Pressing the button will return to the main menu.
- Page 9 4. GGC Connections The GGC connects to the motor interface via the parallel port, and to the PC via a ‘B’ type USB cable as used for printers. On board connectors - J1 – 14 pin connector - Home and Limit switches J2 - 14 pin connector - LCD display J3 - 14 pin connector –...
- Page 10 J2 - LCD wiring J2 is used to connect the one or two lines 16 character LCD Display Panel via a short length of ribbon cable wired as detailed below. All 16 character LCDs should be compatible. Connector Function LCD Pin J2.1 LCD14 J2.2...
- Page 11 X and Y axes. The Home and Limit switch options are only functioning when running the GMFC EXPert software. They do not function under any other version of GMFC. Home and Limit Switches must be of type "Normally Open".
- Page 12 5. Configuration utility, ggc_utilityV3 ggc_utilityV3 program allows configuration interface, testing and moving motors without GMFC. It also permits to program the PIC firmware of the MM2001. The program ggc_utilityV3 is available from https://gmfcsoft.fr/shop/en/ usb-support-for-gmfc-with-the-ggc-adapter/ 5.1. Internal parameter configuration Download the file ggcV3.zip, then uncompress it; run the executable file ggcV3.exe.
- Page 13 You should decrease the value for testing a higher speed. Still, precise speed calibration should be done within GMFC. Cut Repeat: This is the number of times that the motor move will be executed when pressing the Cut button.
- Page 14 Pressing the ‘Cut Forward’ button will move the motors forward and up, if the motors are correctly connected (X to the end of the table, and Y up). Pressing the `Cut Back’ button will move the motors backward and down. The `Motors OFF’...
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