Starting And Interrupting A Part Program - Siemens SINUMERIK 840C Operator's Manual

4 Machine
4.2.7.3

Starting and interrupting a part program

Notes
4-54
To start the part program, press the NC START key.
You interrupt execution of the current part program by pressing NC STOP.
With the START KEY you interrupt execution of the current part program
provided program start has not been disabled. With FEED HOLD ("FST"
message) you can stop the axis movements. The NC program is not interrupted.
With FEED START you enable the axis movements again.
NC STOP
NC START
FEED START
FEED HOLD
• While the part program is being executed, a "Program running" display
appears in the mode field.
• If, during program execution, FEED HOLD is activated, FST (Feed stop) is
displayed in the status field and the feed drives are brought to a standstill
while maintaining the programmed path movement.
• In the case of NC STOP the NC STOP display appears in the mode field.
If the RESET key is pressed, execution of the part program is terminated.
• The control is put into the "RESET" state:
− The NC control remains synchronous to the machine
− All buffers and active memories are cleared (however, the part program
memory contents are preserved).
− The control is in the Reset position and ready to run a new program.
• "Program reset" is displayed in the mode field.
• Error messages with the delete condition "Reset" are deleted.
6FC5198-6AA60-0BP1 © Siemens AG 1999 All Rights Reserved
SINUMERIK 840C, OEM Version for Windows (BA)
01.99