10 Axis and Spindle Installation
10.4.3 Axis traversing
In the absence of feed enable and servo enable signals, an indication showing that the axis is
not in position (" > ") is screened when the direction key is pressed. The following signals
must not be present if the axis is to traverse at the specified speed (with consideration given
to the feedrate/rapid traverse override switch):
•
External F (feedrate from PLC)
•
Feedrate reduction ratio 1:100
•
Testing of all jog mode functions:
–
Limit switches
–
External deceleration (reference point cam)
–
Feedrate override
–
Incremental feed mode
–
Reference point approach
10.4.3.2
Program-controlled traversing
Only the main function should be tested to enable the use of programs as optimization aid.
The following data and signals can prevent program-controlled traversing:
•
Read-in inhibited (DL 7 to DR 10)
•
NC START = 1 / NC STOP = 0 (DR 2)
•
NC START inhibited (DW 11)
•
NC MD 106*
•
Reference point not approached or bit 3 set in NC MD 5004
•
NC MD 548*, 550*, 552*
•
NC START ineffective (DL 16)
•
Feed disable all
Check to see if axis traversing is possible via program memory.
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SINUMERIK 840C (IA)