Siemens SINUMERIK 840C - Manual (Page 201)

6 NC Machine Data (NC MD), NC Setting Data (NC SD) 12.93
6.2 General machine data (general data)
Positions 2 to 32 of the feedrate override switch 100 - 130
Default value Lower input limit Upper input limit Units
see below 0 150 %
Active
at once
Use can be made of a feedrate override switch with up to 32 positions. The percent figures
may be allocated as required except the far left (i.e. first) position, which is always 0 %. In
contrast to position 1, FST (Feed Stop) is not shown in the on-screen channel status field
when 0 % is allocated to another switch position.
Allocations exceeding 150 % are possible, but 150 % is set in the NC as internal limiting
value.
Default values:
1, 2, 4, 6, 8, 10, 20, 30, 40, 50, 60, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120, the
remaining NC MD (NC MD 122 to 130) are set to zero.
Positions 1 to 16 of the spindle override switch 131 - 146
Default value Lower input limit Upper input limit Units
see below 50 150 %
Active
see below
Active: when all channels of the mode group are in STOP status.
Percentages may be assigned as needed to the max. 16 spindle override switch positions.
Default values:
50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 105, 110, 115, 120.
Positions 1 to 8 of the rapid traverse override switch 147 - 154
Default value Lower input limit Upper input limit Units
see below 0 100 %
Active
at once
Default values: 1, 10, 50, 100, 0, 0, 0, 0.
Rapid traverse override must be activated via PLC interface signals. Also refer to the
description of NC MD 5004, bit 4.
6–16 © Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)