Yaskawa YASNAC PC NC I/O Signal Function Manual User Manual

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YASNAC PCNC I/O Signal Function Manual Chapter 6: Operation Support Functions

(4) Stopped Output Signal

If the automatic operation start input “ST” is “closed” and then “opened” with the automatic
operation stop input “*SP” closed, the stopped output “SPL” is opened and automatic opera-
tion is restarted.

The running ouput “STL” is closed.

Fig. 6.4 Time Chart of ST and *SP Input Signals and STL and SPL Output Signals

IMPORTANT

1. The automatic operation start (ST) and automatic stop (*SP) input signals must be “closed” or

“opened” for more than 100msec. If it is less than 100 msec., such input signals may be
ignored.

2. If automatic operation stop (*SP) input signal is “closed” in the state where the CNC is wait-

ing for the completion of M,S,T or B commands (waiting for “FIN” input), the automatic
stopped (SPL) output signal is turned ON. If M,T or B command complete (FIN) input signal
is “opened”, the PCNC enters the automatic operation stopped state.

3. The STL is opened in the single-block stop state.

4. The STL stays closed in the alarm state (ALM).

Open

STP

Open

STL

Open

*SP

Open

SPL

PCNC status

Halt Running Halt Running