Yamaha SRCP - Manual (Page 46)

3-
18
3
I/O INTERF
ACE
(4)When command execution cannot be completed:
(Command execution stops before completion and the END signal does not turn on, as
in the examples listed below.)
• An interlock or emergency stop was triggered during execution of a dedicated command.
• The SERVICE mode input was changed during execution of a dedicated command.
• An error was caused due to a jump to an unregistered program or point during automatic
operation.
Dedicated
command
Differs according to execution command
END
BUSY
Command execution impossible
(1) At the rising edge of the dedicated command input, the END signal turns off and the BUSY
signal turns on.
(2) Turn off (contact open) the dedicated command input after checking that the BUSY signal
turns on.
(3) Wait until the BUSY signal turns off.
(4) The BUSY signal turns off since the command execution stops before completion.
(5) The END signal remains off when the BUSY signal turns off, indicating that the command
could not end normally.
3-6-3 When interlock signal is input
LOCK
BUSY
END
Interlock
Dedicated
command
Differs according to execution command
■ When a interlock signal is input while a dedicated command is being executed, the BUSY
signal turns off. The READY and END signals remain unchanged.
3-6 I/O Control Timing Charts