Yaskawa Yasnac PC NC - Manual (Page 39)

YASNAC PC NC Operating Manual Chapter 2: PC NC System Outline
2 - 18
1. If the second zero point return input signal is turned ON in the state that the first zero point
return has not been completed, the input is invalid and the second reference point return
mode cannot be set.
2. In the second reference point return mode, input from the JOG switch [-X] ([-Y], [-Z]) is
valid. If the mode is changed, the ZRN2 switch is assumed to have been turned OFF.
2.5.4 1-line MDI
During the execution of manual operation, it is possible to execute one block of a part program by
directly entering it to the CRT screen. For this type of operation, a maximum of 40 characters can
be written and the function codes that are allowed are M, S, T, F, and E codes. However, M00,
M01, M02, M30, M90 to M99, and M190 to M199 cannot be specified. An offset command with
a T command is also disregarded. With the system that carries out set-up by using a T command,
a T command must not be specified for this 1-line MDI operation. Follow the procedure indicated
below.
Select the manual mode with the MODE SELECT switch on the machine operation panel. 1-
line MDI operation is not possible in the automatic or edit mode.
Enter the program from the operation panel.
Press the CYCLE START switch on the machine operation panel, and the entered program is
executed. When the execution of the program is completed, the program displayed in the key
entry display area is cleared.
• If the mode is changed while the program is executed (waiting for FIN), the FIN is not
returned forcibly and the NC remains in the state waiting for the input of FIN.