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Chapter Five Automatic Operation
117
V
o
lume
III Function
Signal Cycle start signal
ST
（
G023
＃
6
）
[Type]
Signal input
[Function]
Start the automatic operation
[Motion]
ST is set to 1 in DNC or MDI mode during the automatic operation, the CNC
then enters into the cycle start state and starts to operate.
Feed dwell signal
SP
（
G023
＃
7
）
[Type]
Signal input
[Function]
Automatic operation interruption
[Operation]
SP signal is set to 1, and CNC enters into the feed dwell state and stops
during the automatic operation. When the SP signal is set to 0, the
automatic operation can not be started.
Cycle start indicator signal
STL
（
F000
＃
5
）
[Type]
Signal output
[Function]
Notify the PLC that has been entered into the automatic operation start.
[Condition output]
The signal can be set to 1 or 0, which is determined by CNC state,
refer to the Fig. 5.1.
Feed dwell indicator signal
SPL
（
F000
＃
4
）
[Type]
Signal output
[Function]
Notify the PLC that has been entered into the feed dwell state.
[Condition output]
The signal can be set to 1 or 0, which is determined by CNC state,
refer to the Fig. 5.1.
Automatic operation signal
OP
（
F000
＃
7
）
[Type]
Signal output
[Function]
That notify the PLC automatic operation is being performed.
[Condition output]
This signal can be set to 1 or 0, which is determined by CNC state,
refer to the Fig. 5.1.
Table 5-1
Cycle start LED
STL
Feed dwell LED
SPL
Auto-operation LED
OP
Cycle start state
1
0
1
Feed dwell state
0
1
1
Auto operation stop state
0
0
0
Resetting state
0
0
0
