Mitsubishi Electric MELDAS C6 Interface Manual page 230

B con-
Signal name
tact
AUTO OPERATION "START"
—
COMMAND (Cycle start)
[Function]
This signal is used to start automatic operation in MEMORY mode or MDI mode, or to restart after
automatic operation pause (halt) or block stop.
[Operation]
(1) "Auto operation "start" command" (ST) signal arises when the pressed "auto operation start"
pushbutton is released (i.e. at the time the signal turns OFF). The signal must be ON for a min.
of 100ms.
(2) "In auto operation start" signal (status signal "STL") turns ON when the pressed "auto operation
start" pushbutton is released, and turns OFF when "auto operation pause (or halt)" pushbutton
is pressed or block stop occurs in single-block operation.
(3) Signal (ST) is invalid when:
• Automatic operation has started.
• "Auto operation pause command" (*SP) signal is OFF.
• During reset ("Reset & rewind" signal is ON).
• During alarm.
• Sequence No. is being searched for.
(4) Automatic operation stops or is suspended or block stops when:
• "Auto operation pause command" (*SP) signal turns OFF.
• Reset occurs ("Reset & rewind" signal turns ON).
• Alarm which causes stop to automatic operation occurs.
• Automatic operation mode is changed to manual operation mode.
• Mode is changed to other automatic operation mode and then the block in execution is
completed.
• Block in execution is completed after "Single-block (SBK)" signal turns ON.
• Block in execution is completed after "Machine lock" signal (MKL) turns ON.
• Program specified in MDI mode has been executed completely.
[Related signals]
Memory mode (MEM: Y708)
MDI mode (D: 70B)
6. EXPLANATION OF INTERFACE SIGNALS
6.3 PLC Output Signals (Bit Type: Y***)
Signal
abbreviation
ST
6-3-33
1st system 2nd system
Y710 Y7F0
3rd system
Y8D0