Fundamentals
15.3 Control- and status-word bits for NCK<->drive communication
CNC Part 1 (NCK, PLC, drive)
Commissioning Manual, 11/2006, 6FC5397-2AP10-2BA0
261
Signal provided by NCK VDI interface
(PLC)
Remarks Bit in
STW1
Meaning
Is "1", "TRUE", if the NC can
control the associated drive AND
the drive itself requests that
control (ZSW1.bit9)
No signal 10 Control from the PLC
Always "0", "FALSE" No signal Signal not used 11 Reserved
"Release holding brake" DB(AX).DBX20.5 12 Open holding brake
Always "1", "TRUE" No signal Signal is used as the
identifier to shut down the
drive's ramp-function
generator (isochronous
Profibus drive)
13 Ramp-up time zero for
controller enable
Always "1", "FALSE" No signal Signal not used 14 Open-loop torque-
controlled mode
Customer-specific signal No signal for
SINAMICS
15 Signal not used in
conjunction with
SINUMERIK, no
PROFIDRIVE standard
signal
PLC interface for STW2
Signal provided by NCK VDI interface (PLC) Remarks Bit in
STW2
Meaning
DB(AX).DBX21.0 Bit A 0 Parameter-set switchover,
bit0
DB(AX).DBX21.1 Bit B 1 Parameter-set switchover,
bit1
Drive-parameter-set switchover
DB(AX).DBX21.2 Bit C 2 Parameter-set switchover,
bit2
1. Speed setpoint filter DB(AX).DBX20.3 Not used for
SINUMERIK or
SINAMICS
(ineffective)
3 1. Speed setpoint filter
Ramp-function generator disable DB(AX).DBX20.4 Not used for
SINUMERIK or
SINAMICS
(ineffective)
4 Ramp-function gen.
inactive
Always "FALSE" not used 5 Reserved
Integrator inhibit, speed controller DB(AX).DBX21.6 6 Integrator inhibit, speed
controller
Selection of "parking axis" by
shutting down the encoder bit on
the VDI interface
DB(AX).DBX1.5 =
FALSE &
DB(AX).DBX1.6 =
FALSE
7 Selection of "parking axis"
Traversing to fixed endstop No signal Drive fault "speed
controller at limit"
deactivated
8 Suppress fault 608,
"speed controller at limit"
Motor changeover/selection DB(AX).DBX21.3 Bit A 9 Motor changeover, bit0
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