System Integrity; Failure Safety - Siemens SINUMERIK 840Di Manual

1 General on the SINUMERIK 840Di
1.1 Overview of SINUMERIK 840Di
!
1.1.5

System integrity

Certification of
expansions
1.1.6

Failure safety

Fatal exceptional
error
(Blue Screen)
1-26
Warning
Please pay attention to the following points with regard to the screen resolution
and depth of color of the PCU.
S
The maximum color depth is restricted to 65536 colors and the maximum
screen resolution is restricted to 1024*768 pixels. Otherwise, in unfavorable
situations, e.g. if the NC software causes a high load on the CPU, sporadic
real-time violations or a time-out on the interpolation level of the NCK can
occur.
S
Changing the screen resolution and/or depth of color
The NCK must be stopped before testing/switching the screen resolution
and/or color depth on the PCU and started again explicitly after testing/
switching using the Windows NT service "LogB Service" in the control
panel. Otherwise a malfunction may occur in the real-time response.
In order to offer high quality and wide functionality of the entire system, SINUM-
ERIK 840Di comes completely configured and ready to operate.
To this aim, the system components used are subject to a certification proce-
dure with Siemens as the system manufacturer. This is to certify and document
the compliance with the real-time capability of the whole configuration in impor-
tant operating modes.
In the case of any modifications to or expansions of PC components (hardware
or software), no binding statements can be made regarding compliance with the
product features if any amendments are made by third persons. These are the
sole responsibility of the OEMs or the user who has made the modifications.
A PC generally constitutes an open system, and expansions of and/or modifica-
tions to the software and hardware to achieve a certain functionality are in some
cases inevitable.
SIEMENS therefore offers testing and documentation of the real-time response
of system configurations for systems deviating from the factory settings as a
service.
Please contact your local SIEMENS sales representative.
If Windows NT detects a fatal exceptional error during the operation of the NC
system software, the following steps are carried out:
S
Windows NT will stop.
S
An error message will appear on the screen.
S
NC and PLC will continue to operate as normally.
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
06.03