Fundamentals
15.3 Control- and status-word bits for NCK<->drive communication
CNC Part 1 (NCK, PLC, drive)
262 Commissioning Manual, 11/2006, 6FC5397-2AP10-2BA0
Signal provided by NCK VDI interface (PLC) Remarks Bit in
STW2
Meaning
DB(AX).DBX21.4 Bit B 10 Motor changeover, bit1
Motor selection in progress DB(AX).DBX21.5 11 Motor selection in
progress
12
13
14
Master sign-of-life No signal
15
Master sign-of-life
15.3.2 Drive to NCK
Introduction
The drive transfers the data to the NCK using message frames via a PROFIBUS interface
(internal PROFIBUS). Actual values exist for the speed control and torque and are preceded
by a status word in the message frame.
PLC interface for ZSW1
Meaning Bit in
ZSW1
Remarks VDI interface (PLC) Signal processing in the NCK
Ready to start 0 No signal
Ready-to-operate/no fault 1 No signal
Status, controller enable 2 For a combination Bit2
from ZSW1 = 0 and
simultaneously
Bit11 from the MedW =
1,
the drive is in
autonomous drive
status.
DB(AX).DBX92.4
Fault active 3 No signal Alarm 25201/25202, is used to
activate error deletion on the
NCK.
No OFF2 pending. 4 No signal Not used
No OFF3 is active 5 No signal Not used
Power-on inhibit 6 No signal Used on the NCK to generate
the "Acknowledge fault
memory" signal.
Warning present 7 No signal No evaluation
nset = nact 8 No signal No evaluation
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