Hi
Newbie desperately needing assistance from the leaned members of the forum please!
Machine specs: Home built 3 axis gantry driven router (1200 x 1200 x 100 mm work area).
TB6560AHQ - 4 axis blue driver board - Mach3 software
X & Y rack and pinion (mod 1.5 rack with 18 tooth spur gear driven from belt and pulleys 3:1 ratio)
(motor 20 tooth,spur gear 60 tooth)
4th axis slaved to X to drive gantry.
Z axis is a directly driven 1/2"-10 5 start acme rod.
SBC4 xml file over written into the Mach3 folder
Limit switches are mechanical micro switches wired NC in series; each axis being wired to its own pin of the driver boards DB9 socket.
{Some manual adjustment to the xml file have been made while configuring Mach3 whilst setting up Input and Homing/Soft limit settings}
With the machine set with the SB4 xml file, with the A slaved to X, both the motors drive in the same direction without changing the
config>ports & pins>motor output - dir active low setting of either motor.
All axis drive in the correct direction using either keyboard or jog buttons on the pop out mpg controller of Mach3.
However as soon as one checks and sets the pins for the
config>ports & pins>input signals (as per driver-board manual) and sets up the
config>home/soft limits as per Mach3 manual and tutorial videos; the direction in which the axis travel is reversed/opposite to what they did before setting up the home/limit switch settings. To get them driving in the correct direction the
config>motor output>dir active low had to be checked for X to drive correctly together with the slaved motor. The setting was also checked for the Y and Z axis to also get them traveling correctly again.
When referencing the X axis; the master X axis motor drives in the positive direction, whilst the slaved A axis motor drives in the negative direction. A Mach3 stop is required to prevent the 2 sides of the axis from tearing themselves apart (no e-stop wired up). Once the e-stop has been triggered only the Ref A led turns to green.
I also notice that when trying to reference the master X motor drives in the positive direction and not towards the home side of the table.
From the driver board manual, the pins for the
config>ports & pins>input signals can only be set: X++ pin 10; X-- pin 10; Xhome pin 10
Y's to pin 11
Z's to pin12
Does this effectively mean that the X-- and Xhome cannot be set to limit and a home switch when referencing (similarly for the Y and Z axis). In other words there are limitations to this board; as Mach3 states one can set for example: X++ to pin 10; X-- & Xhome to pin 11
I also notice in the driver board manual: that the page depicting the settings for
config>ports & pins>input signals the pin setting for the 4th axis is also showing pin 12. { should not the 4th axis be set to the same pin as the axis it is slaved to}
Also noticed in the manual and settings of the SBC4 xml file that the
motor output> enable setting for all the axis is pin 14........ is this not an output pin for Mach3?
It seems I am confused as heck and in dire need of help in putting me on track.
Regards
Gary
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