Centroid Community CNC Support Forum

hi all, i want do give a small update: the ZRI Homing process is working now ! very happy about it. but i need to use a workaround. since the RS422 Signal cannot switch an Input and the variable in Acorn is not written from the INdex pulse, i ...

hi all, i want do give a small update: the ZRI Homing process is working now ! very happy about it. but i need to use a workaround. since the RS422 Signal cannot switch an Input and the variable in Acorn is not written from the INdex pulse, i ...

Tom was probably thinking you meant #23401-#23408. Just out of curiosity, do #23401 and #23402 change state on your system, corresponding to whether or not the asterisk is showing? Yes, I think #25101-#25108 are relatively new. Presumably they were added to avoid the awkward timing issues you get w...

Just one point I'm sure you are aware of. The X-axis will not have an index pulse. The index pulse will be on whatever axis the SCALE is attached to.

Tom was probably thinking you meant #23401-#23408. Just out of curiosity, do #23401 and #23402 change state on your system, corresponding to whether or not the asterisk is showing? Yes, I think #25101-#25108 are relatively new. Presumably they were added to avoid the awkward timing issues you get wh...

no idea ?

i saw, that in the latest manual for PLC programming these variables are not listet. Are they kind of new and is there maybe a bug ?

Michael

Hi Tom,

Is that really true? the lathe Operation manual says, that These variable will contain the number of counts of the last index pulse.
Michael

Those variables will only change when the encoder is sitting on the index mark. You will need to check the variable when the asterisk is showing on the PID screen.

Update: I changed the polarity of Z pulse for the Z axis also and now the Flash in the PID Encoder settings is working for X and Z Axis. But the variables from 25101 to 25108 are all still set to - 1. I have no idea, why it is not working. Is there a bug or is there a Parameter setting missing? Chee...

Home programm is still the standard one. I began to write a new Homing macro but then realized, that it will not work, because the Z pulse is not usable. For debugging i use these two lines of Code: