2 Operator Interface 01.99
6FC5198-6AA60-0BP1 © Siemens AG 1999 All Rights Reserved
2-18 SINUMERIK 840C, OEM Version for Windows (BA)
Machine manufacturer
The given increment sizes and the control range are valid for standard machine
data (MD). These can be altered by the machine-tool manufacturer to suit a
specific application.
When you operate the FEED HOLD key:
• The program being executed is stopped
• The feed drives are brought to a controlled stop
• The associated LED lights up as soon as FEED HOLD is accepted by the
control.
Examples for use of FEED HOLD:
• During application in MDA mode, a block with a fault is discovered
• To effect tool change
When you operate the FEED START key:
• The part program continues in the current block
• The feedrate is increased to the value specified by the program
• The associated LED lights up as soon as FEED START is accepted by the
control.
Machine manufacturer
The following is configured by the machine manufacturer:
• The feed and rapid traverse rates
• The values for feed override positions
• Whether the feed override switch is also active for rapid traverse
• The axis names (see machine-tool manufacturer’s specifications)
Feed hold
Feed start
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