
5. AUTOMATIC OPERATION
B–63523EN–1/03
648
D In the manual mode, when it is necessary to replace the tool or measure
workpieces, the tool can be moved manually, such as by manual
continuous feed, or manual handle feed. This operation is called
manual retraction. The path along which the tool retracts is
automatically stored in the control unit. The number of paths which
can be stored, however, is limited.
D Set automatic operation mode again. Set the tool return signal TRRTN
to 1, then to 0. Then, the control unit traces back the path of the
manually moved tool to automatically return the tool to the retract
position. This operation is called return. When the tool has been
returned to the retraction position, tool retraction completion signal
TRSPS is turned to “1”.
D When the automatic operation is started at the retraction position, the
tool is first returned to the position where TRESC was turned to “1”.
This operation is called repositioning. When repositioning completes,
TRACT is turned to “0” to notify the PMC of the end of the tool
retraction mode. Then the operation differs according to the status of
automatic operation when the machine entered the tool retraction
mode.
- When the machine enters the tool retraction mode while automatic
operation is started, the automatic operation that has been held is
resumed after the tool is repositioned.
- When the machine enters the tool retraction mode while automatic
operation is stopped or held, the machine returns to the same mode
after the tool is repositioned. If the cycle is restarted, automatic
operation is resumed.
Tool retraction signal
TRESC <G059#0>
Tool retraction mode signal
TRACT <F092#3>
Tool return completion signal
TRSPS <F092#5>
Tool return signal
TRRTN <G059 #1>
Cycle start signal
ST <G007#2>
Retraction
Retract
position
Manual
retraction
Return Re–positioning
Retract
position