Failure Safety - Siemens SINUMERIK 840DiE sl Manual

1 General Information on the SINUMERIK 840Di sl
1.1 Overview of SINUMERIK 840Di sl
1.1.7

Failure safety

Fatal exception
error (blue screen)
Power failure
1-28
If Windows XP detects a fatal exception error during the operation of the NC
system software, the following steps are taken:
S
Windows XP stops.
S
An error message appears on screen.
S
NC and PLC continues to operate normally.
S
The NC signals the fatal exception error detected to the PLC via the "PC OS
fault" interface signal.
Depending on the current machining situation, the PLC user program can either
continue or step machining.
After completion of machining, the PLC user program can request a shutdown
of the PC by sending the "PC shutdown" interface signal.
The "PC shutdown" interface signal causes the following actions:
– Retentive NC and PLC data are stored
– NC and PLC are closed down
– The Windows XP "Blue Screen" is displayed
– (Optional) The PCU reboots
The behavior of Windows XP in the event of a fatal exception error (Blue
Screen) can be configured via the Control Panel: Windows Start menu:
Start > Settings > Control Panel > System
Note
For a brief description of the "PC OS fault" and "PC shutdown" interface
signals, please refer to Subsection 18.1.1, Page 18-499.
Notice
The "PC shutdown" interface signal must be reset in the organization block
OB100 (cold restart) of the PLC.
A power failure lasting more than 5 ms is detected by the POWER FAIL func-
tionality of the SINUMERIK 840Di sl as a fault scenario and the following ac-
tions are initiated:
– The background lighting of the operator panel display is switched off
– NC and PLC are closed down properly
– The NC and PLC user data are saved in the SRAM of the MCI board.
The battery–backed user data are available again immediately the next time the
SINUMERIK 840Di sl is booted. The SINUMERIK 840Di sl is therefore ready to
use again immediately, without data loss.
If the power supply recovers before final PCU shutdown, the following message
box is displayed:
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
01/2007