Centroid Community CNC Support Forum

I have also heard that Acorn will offer Modbus in the summer of 2018....ask about this. It's the only reason I did not go with it.

Keith already advised that no serial comms are available for user/g code use, but that he would try to suggest methods that use the Acorn board's i/o hardware, in lieu of serial. Serial would not necessarily need to be done via the control board it could (theoretically) be done directly from the PC ...

I'm hoping they will add some form of serial to the centroid Acorn software, then it will be non-brainer purchase for me, without it though it's a roadblock for me.

Yes, I believe the analog signal speed input to the VFD is just a unidirectional, open loop, "pilot" signal to tell the VFD's internal closed loop process what speed to target. No different than manually twiddling a keypad potentiometer when in Sensorless Vector Mode.

CNCKEITH, thanks for the help are you an official Centroid rep? (Just asking so I can avoid sending redundant emails to Centroid for official answers) I specifically need to know about the modbus/ serial capabilities as I require serial comm ability to talk to custom boards that I make. Don't need t...

OK thanks.

So none of the Acorn software free/pro/ultimate can't do Modbus ...or serial

I'll send an email to centroid, I expect some of their higher level systems software Iif not Acorn) can do modbus/ or serial.

I'm considering buying an Acorn kit. With Mach 3 I am able to write a Macro to send serial comms out of the USB port and then using an RS232/RS485 dongle I can talk to one of my microcontrollers. This useful for expanding into complicated automation beyond what any given controller board is designed...