cycle 83 and cycle 84

Hello to all.
I have 2 problems on 2 different machines some equipped with Sinumerik 840D:

1) using cycle 83 (deep perforation) single block SBL not work (ony with cycle 83 )

2) with cycle 84 (deep thread) I must set up the parameter of the step with the minus sign otherwise the tool does not return behind.

thanks anyone help me

Thank's for the information. I verify quickly.

Ciao