Drive To Nck - Siemens SINUMERIK 840D sl Commissioning Manual

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
Ready to start
Ready-to-operate/no fault
Status, controller enable
Fault active
No OFF2 pending.
No OFF3 is active
Power-on inhibit
Warning present
nset = nact
Control from the PLC
Comparison value reached
Reserved
Reserved
Function generator active
Only used in "positioning
mode": Open-loop torque-
controlled mode
Only used in "positioning
mode": Spindle positioning ON
IBN CNC: NCK, PLC, drive
Commissioning Manual, 07/2007, 6FC5397-2AP10-3BA0
15.3 Control- and status-word bits for NCK<->drive communication
Bit in Remarks
ZSW1
0
1
2 For a combination Bit2
from ZSW1 = 0 and
simultaneously
Bit11 from the MedW =
1,
the drive is in
autonomous drive
status.
3
4
5
6
7
8
9 Signal is primarily set
by the drive.
10
11
12
13
14 Irrelevant for
SINUMERIK
15 Irrelevant for
SINUMERIK
VDI interface (PLC) Signal processing in the NCK
No signal
No signal
DB(AX).DBX92.4
No signal Alarm 25201/25202, is used to
activate error deletion on the
NCK.
No signal Not used
No signal Not used
No signal Used on the NCK to generate
the "Acknowledge fault
memory" signal.
No signal No evaluation
No signal No evaluation
No signal The NCK itself then sets the
associated STW1.bit9, if the
drive in the NC is known to be
"operational" and "ready" (e.g.,
bus booted, etc.).
No signal No evaluation
No signal No evaluation
No signal No evaluation
DB(AX).DBX61.0 Drive test "travel request"
No signal No evaluation
No signal No evaluation
Fundamentals
303