Detailed Description
2.1 General functionality
Travel to Fixed Stop (F1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-9
Function abort
A function abort can be triggered by the following events:
• EMERGENCY STOP:
– With an 840D control, the NC and drive are disconnected from the supply after
EMERGENCY STOP, i.e. the PLC must react.
– With an 840Di control, the NC and drive are disconnected from the supply after
EMERGENCY STOP, i.e. the PLC must react.
Caution
Make sure that after cancelling the function "travel to fixed stop" by
"EMERGENCY STOP" no dangerous machine situation
(MD37002 FIXED_STOP_CONTROL e.g. pulse blocking cancel) can arise.
• The fixed stop monitoring function responds in the case of:
– Exit from fixed stop position by axis
– Tool breakage
– Pulse disable
2.1.3 Block search response
Block search with calculation
The response is as follows:
• If the target block is located in a program section in which the axis must stop at a fixed
limit, then the fixed stop is approached if it has not yet been reached.
• If the target block is located in the program section in which the axis must not stop at a
fixed limit, then the axis leaves the fixed stop if it is still positioned there.
• If the desired fixed stop status is reached, alarm message 10208 "press NC Start to
continue the program" is output. The program can be continued after pressing NC Start to
acknowledge.
• At the start of the target block, FXST[x] and FXSW[x] are set to the same value as they
would have during normal program processing.
Block search without calculation
The commands FXS, FXST and FXSW are ignored.
FOC
FOCON/FOCOF is activated modally. It is already active in the approach block.
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