RedRon:
Don't know if the setup on the Romi is exactly the same as what you have but here is the brief setup info that i use:
Set the control to "jog" and "guide"
Key "cycle" to enter the cycle menu
Select "Thread" as the cycle choice.
Enter all the data as a normal ID thread ie: ID,Tool number, spindle speed,Spindle direction,Chamfer "OFF",Skip the cut amount for now, Type= General, and at the "Method" choice select "REPAIR".
At this point the Cut amount box will default to "Cut Times" and the number will be 1.0000. This can be changed to be back to "Cut Amount" and a value for the first cut taken by the tool, or left at "Cut Times" and you may use any number here for the number of passes you wish to make. The default is one pass because the intent is just to make a clean up pass, but you may use more if you wish or you may make a series of cuts to depth.
Finish by imput of the thread angle (60*) and the pitch or TPI and weather to use coolant or not.
Now you can orient the spindle. There should be two soft key choices on the spindle. One to "Orient" and one to "Cancel Orient" Select the "Orient" and the spindle should jog and stop. It will be held fast at the stopped position.
Yoy then need to enter your tool start and stop information. This can be done by entering the size and length of the part or by letting the tool measure the position. This is done by using the "RD POS" soft key. TRhis will enter the location of the tool into the program. I do not use this feature, but rather enter the start and stop points manually in the "X start" ,"Z start" and "X finish, Z finish" boxes.
If you used one cut in the choices above you will need to use the position of the tool at full depth as your "X" value. If you are using multi cuts from start then use the md as the "X" value...(try all this on some scrap before trying on the real part)
Now move the tool to a thread and position it as best you can in the groove. Hit the "SYNC P" key. This will now time the thread location waith the oriented spindle position.
Once the sync is done, use the "CAN Orient" key to reliese the spindle. Mover the tool clear or the part and cycle start....
Again try all this on an old part or in the air to see how all the commands relate. If you wish ot make a full thread cutting air for the part already done sue thje "Cut Amount" selection and choode the depth for your first pass. Spec the X start as the minor diameter and use the "detail" key to adjust the depth to give the thread depoth of cut you wish.
Cheers Ross
One further note: the cut timing can be adjusted by using the "shift Ofs" imput. Plus values here will move the tool to cut more on the rear of the thread profile, and a neg value here moves the tool to cut the lead side more.....Could also use this value to cut a multi lead i think but have not tried it.