Yaskawa i80M Connecting Manual - Manual (Page 245)

(2) When the following state is entered after cycle start, the control completes operation con-
trol, and turns off the STL output.
(a) When apart program has been executed bymanual data input inthe MDl mode.
(b) When one block of a part program has been executed with the single block input
(3)
(4)
contact closed.
(c) When the end of
part program.
When the feedhold
controlled
program input contact has been closed by an M command of a
input contact “ SP” is opened during automatic operation, the
etc. are interrupted, and at the same time the cycle start out-
put STL is turned off and the feedhold output SPL is turned on. While a block of thread
cutting instruction is being executed, the feedhold input is disregarded.
When the feedhold input contact SP is closed, and cycle start input contact ST is closed
and opened, temporary stop SPL is turned off, and automatic operation is restarted. The
cycle start output STL is turned on also.
Timing chart for input of cycle start (ST), feedhold ( SP), and cycle start and tem-
porary stop is shown in Fig. 21.2.
ST
STL
*ST
SPL
OPENED
I I
ON 1
OFF I I
CLOSED
OPENED
I
I
ON
OFF 1 I
CONTROL
I I I
1
STATE FEED-CYCLE START FEEDHOLD CYCLE START
HOLD
Fig. 21.2 Timing Chart for Input of Cycle/Start (ST), Stop
( * SP), and Output of Cycle Start
Feedhold
NOTE
1. The cycle start (ST) and stop inputs must be closed or opened
for a period longer than 100 ms. If such a period is shorter than 100 ms,
the inputs may be disregarded.
2. If the cycle stop
input opens while M/T command execution
completion is awaited (the FIN input is awaited), the feedhold out-
put turns ON. However, if the M/T command execution completion
(FIN) input opens, the machine is placed in the feedhold state.
3. When parameter pm4009 D7
= 1 at the time of mode switching from
automatic to manual, the system keeps waiting for M/T command ex-
ecution completion if the SPL output turns ON.
When parameter
pm4009 D7 = O, the SPL output does not turn ON and M/T command ex-
ecution is forcibly terminated. In any case, the travel command causes
the machine to decelerate to a stop.
245