Yaskawa Yasnac PC NC - Manual (Page 49)

YASNAC PC NC Operating Manual Chapter 2: PC NC System Outline
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1. If the operation mode is changed from automatic to manual without stopping the
operation, the axes are decelerated and stopped immediately. When the operation
mode is changed from one automatic mode to another automatic mode, operation
stops at the block end.
2. If automatic operation is restarted without returning the axes to the previously located
position after manual operation intervention, how the tool paths to be generated after the
restart of automatic operation differs depending on the setting of the MANUAL ABSO-
LUTE switch on the machine operation panel. For details of the switch, refer to 2.8.4,
“Manual Absolute”.
3. In the manual mode, l-line MDI operation is possible. For details of the operation, refer
to 2.5.4, “1-line MDI”.
2.8.1 MDI Operation Intervention during Automatic Operation
To carry out an MDI operation during automatic operation, follow the steps indicated below.
Interrupt the automatic operation by turning the SINGLE-BLOCK switch on the machine
operation panel ON. The machine stops after the completion of the block being executed
when the switch is turned ON. In this case, several blocks of commands might have been read
into the buffer area.
Place the MODE SELECT switch on the machine operation panel in the MDI position.
Enter the necessary commands.
Press the CYCLE START switch to execute the entered commands.
Return the MODE SELECT switch to the mode previously selected (MEM).
Turn OFF the SINGLE-BLOCK switch.
Press the CYCLE START switch to restart the interrupted automatic operation.
Do not attempt MDI operation intervention in a canned cycle mode (G73, G74, G76, lENT
G77,G81 to G89) or during reference point return. Interrupted canned cycle or reference
point return could not be completed correctly.
2.8.2 Automatic Handle Mode Offset *
During automatic operation (MD1, MEM), distance of axis shift carried out by using the pulse
handle can be added by this function. This function allows compensation for errors in mounting
workpieces, etc. Follow the procedure indicated below.