Problem in Tool change

[ahmedsamy_81]

i had write my first G-code on CNC machine but when the program began in tool change the Head was rotated and the magazin start to rotat continuously without stop , i think first the problem in the tool memory.
but i need help for how i can solve this problem

[tunitime]

Most machines either have a limit switch to count the tool changer, or an encoder to track the position. Might have a bad switch or encoder.

[Wbjr]

I am not a seasoned veteran like most hear but I had a similar situation.
I manualy entered a tool change and the head kept spinning.
The maching was looking for a tool it could'nt find.
I believe I had entered:
T012012 when I it should have been T1212 for tool #12
For single digit tools it would be T0101 or T010101
I am working on an OKUMA 4va.
Hope this helped.