Recently I purchased a “used” machine. This machine came with the RichAuto A11e pendant.

On The motherboard, where all of the connections are made, there is a port for a C-Axis. However the pendent does not have the C+ or the C- on buttons 4 and 8 such as with the A18 controller.

I want to add a rotary axis to this machine. Can I add the stepper driver and the stepper to this port and utilize it? I’m wondering if one could flash the A18 firmware onto the A11 bc the only “Visible” difference is the absence of the C+ and C- Labels on the A11.

The only information that I can find after scouring the internet for hours is a CNCzone thread that stays the C axis port is linked to the Y port and just sends the same signals as the Y axis.

I would assume that one could change the parameters on the A11e so that the C is not slaved to the Y axis. And even though the button does not state C+ or C- they should still operate the new rotary axis accordingly.

Are there internal differences of the Pendants A11 and A18? I know that a replacement keypad (only then keypad) for the A18 can be purchased for somewhere around $15 (us). And the only difference that I can see is the C+ and C- not being on the A11 keypad.

Any help will be greatly appreciated

Thanks for your assistance.