Siemens SINUMERIK 840C Installation Instructions Manual page 316

09.95
Following spindle-specific machine data bits
NC MD 7
525*
The following bits only apply to following spindles and are active after Power on.
Bit 5 Test bit compensatory controller
Bit 5=1 Compensatory controller test mode switched on
Bit 5=0 Compensatory controller test mode not switched on.
Bit 3 Position overwrite permissible
Bit 3=1 Overwriting positions enabled
Bit 3=0 The synchronous positions (or switching positions) entered for the leading
axes/spindles must not be overwritten. I.e., synchronization must always start
with the same positions.
Bit 2 Coupling factor switchover permissible
Bit 2=1 Switching over the coupling factor is permitted (with G402, G403 commands
or via input display)
Bit 2=0 Switchover not permitted.
Bit 1 Reconfiguration permissible
Bit 1=1 Reconfiguration is permissible (with G401 command or via input display)
Bit 1=0 Reconfiguration not permissible
Bit 0 Spindle can be following spindle
Bit 0=1 Spindle can be following spindle
Bit 0=0 Spindle must not be a following spindle
©
Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
6 NC Machine Data (NC MD), NC Setting Data (NC SD)
Bit No.
6 5 4
Test bit
compensa-
tory
controller
6FC5197- AA50
6.6.2 Spindle-specific MD bits (spindle bits)
3 2 1
Coupling
Position
factor Reconfig.
overwrite
switchover permissible
permissible
permissible
0
Spindle can
be FS
6–131