Fundamentals
15.3 Control- and status-word bits for NCK<->drive communication
CNC Part 1 (NCK, PLC, drive)
260 Commissioning Manual, 11/2006, 6FC5397-2AP10-2BA0
15.3 Control- and status-word bits for NCK<->drive communication
15.3.1 NCK to drive
Introduction
The NCK transfers data to the drive using message frames via a PROFIBUS interface
(internal PROFIBUS). Setpoints exist for speed control and torque and are preceded by a
control word in the message frame.
PLC interface for STW1
Signal provided by NCK VDI interface
(PLC)
Remarks Bit in
STW1
Meaning
Axis controllable from NCK:
• Servo enable
• Measuring system selected
and OK
• Pulse enable
• …
DB(AX).DBX2.1
DB(AX).DBX1.5/6
DB(AX).DBX21.7
0 OFF1
Always "1", "TRUE" No signal 1 OFF2
Always "1", "TRUE" No signal 2 OFF3
VDI signal pulse enable DB(AX).DBX21.7 3 Enable inverter
RFGIS DB(AX).DBX20.1 4 Ramp-function generator
enable
RFGIS DB(AX).DBX20.1 5 Ramp-function generator
Start
NCK controlled parallel to
STW1 bit0
6 Setpoint enable
(DriveReset) is generated by:
• "RESET signal" or CANCEL
KEY, if a simultaneous drive
fault is present (ZSW1.bit3 or
ZSW1.bit6)
No signal Signal "OFF1" is
automatically set to
FALSE internally,
simultaneously to
"DriveReset" (user must
NOT manipulate the servo
enable separately!).
7 Reset fault memory
Selection of NC function
generator (via PI service from
HMI)
No signal The user cannot influence
the function generator
selection via the VDI
interface.
8 Activate function generator
Always "0", "FALSE" No signal Signal not used 9 Reserved
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