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03/2006
5.4 Power-On and Power-Up
5-46
© Siemens AG 2006 All Rights Reserved
SINUMERIK 840D/810D Start-Up Guide (IADC) – 03/2006 Edition
RESTART:
The control is started (transition from STOP to RUN state). If the start process is
aborted, the control switches back to the STOP state.
This LED lights up when the PLC watchdog has responded.
A defined value is assigned to a variable by means of the FORCE function. The
variable is write-protected and cannot be changed from any location. The write
protection remains effective until it is canceled by the UNFORCE function. If the
PFO LED is out, then no FORCE job is present.
The Profibus LED corresponds to the BUSF LED on the SIMATIC CPU 315-DP.
See the CPU data installation guide for a description.
Note
If all 4 LEDs on the status display flash after the NCU hardware is replaced,
then you must power up the NCK again. A PLC general reset can then be car-
ried out if necessary.
5.4.5 Power-up of machine control panel (MSTT)
Press the “Start feed” and “Stop feed” buttons while the machine control panel
is powering up (all the LEDs flash) to display the version number of the software
on the machine control panel. This means that the system software on the ma-
chine control panel has started up correctly and is waiting for the PLC to start
cyclical communication.
A detailed description of the machine control panel used can be found in the
following documentation:
Reference material: /BH/ Device Manual, Operating Components
5.4.6 Powering up the drives
After a NCK general reset, the drives are disabled and there are no data re-
cords for the drives (known as boot files). The “SF” LEDs on the NCU module
and on the 611D controller light up.
Detailed information on powering up SIMODRIVE 611 universal drives can be
found in the following document:
Reference material: /FBU/ SIMODRIVE 611 universal function guide
PF LED
PFO LED
Profibus
Software release
Power-up
5 Power-On and Power-U
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