Siemens SINUMERIK 840C - Manual (Page 1047)

12 Functional Descriptions 04.96
12.27.1 Parameter set switchover (up to SW 3)
a) Spindle gear stage selection through user M function to PLC (M43 in example)
b) Gear stage selection through programming of S value (semi-automatic)
Part program
Drive
parameter set
611D MSD
SERVO
Spindle
DB 31, DR K+74, bit 0-2
DB 31, DR K+72, bit 0-2
PLC
Actual gear stage
Setpoint parameter set
Actual parameter set
M43
M3 S1000
DB 31, DR K+0, bit 0-2
DB 31, DR K+1, bit 0-2
Setpoint gear stage
Actual gear stage
NCK
parameter set
NCK
Spindle
SERVO
parameter set
b)
a)
MD 522*, bit 4
b)
FDD parameter sets (611D)
There is no selection of parameter sets available for feed drives. The PLC control and status
signals (DB 29, DW K + 122, bits 0 - 2; DB 29, DW K + 120, bits 0 - 2) have no effect, but
are still transferred.
MSD parameter sets (611D)
A selection of eight parameter sets is available for a main spindle drive via the PLC control
signals DB31, DW K + 74, bits 0 - 2. The active parameter set is displayed via status signals
DB 31, DW K + 72, bits 0 - 2. The MSD parameter set and NCK gear stages can be linked by
means of bit 4 in MD 522*. If the bit is reset, then the MSD parameter set is switched over
with the NCK actual gear stage. In this case, control bits DW K + 74 have no effect.
NC MD 522 * . 4 is active only with 523 * . 0 ”Extended parameter set switchover”.
12–272 © Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)