Centroid Community CNC Support Forum

I don't see anything wrong with the file.

I was able to read it in CNC12 offline/demo v5.00.

What CNC11 or CNC12 software version are you using?

Yes. A good starting point is to set P6 = 0 and P160 = 0. Beyond that, it mostly depends on your M6 macro and your PLC program. If your M6 macro does not recognize P6==0 and fall back on manual tool changes, then you will need to temporarily delete or rename it so that CNC12 just uses the default ma...

My complete Allin1DC basic mill PLC program is attached, for reference. I use Parameter 178 bit 2 (+4) to select bipolar analog.

Rigid tapping is not a factor one way or the other. To do tapping, you need to be able to make the spindle rotate forward and rotate reverse, at more or less the requested speed. It does not matter whether reverse rotation is accomplished with a bipolar analog signal, or with an alternate "run&...

Do you mean INP3, on the Alt-i display on the computer screen, is flickering between green and red? Or do you mean that a physical LED on the Allin1DC board, which happens to be near the limit defeater DIP switches, is blinking? If the latter, that has nothing to do with the limit switch defeaters. ...

Assuming you only want to use it for speed control, then that should work (output a value from 2048 to 4095 for 0V to +10V). My standard code is like this (having previously set "SpindleAnalogBipolar_M" per a parameter selection). ;Convert RPM to 12 bit value IF True THEN TwelveBitSpeed_FW...

No, but you don't get power for the coolant pump "out of the Allin1DC" in any circumstance. You need to find and install a suitable DC power supply, and a relay to switch it with. Then you use the Allin1DC output relay to switch the coil of the relay that in turn switches power to the pump...

Wiring the analog signal to two or three VFDs in parallel is generally not a problem.

The maximum load on the analog output for most Centroid boards is 10mA.

Typical VFD analog input impedance is 10K or higher, so the draw at 10V would usually be ca. 1mA per VFD.

If you disconnect the Acorn's analog signal from the VFD, and give a full-speed command, do you again get +10V? If not, then the Acorn's analog output section has probably been damaged in some way. If you do get +10V when disconnected from the VFD, then something about the VFD analog input is puttin...

Does your VFD really call the analog input terminal "AO1"?

That is a more common naming pattern for an analog output (e.g. speed or load monitor signal).