Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
3. Hard disk storage space
There must be sufficient free space on the hard disk of the PCU to save the
file (D:\Memory.dmp) specified at 1.. If free space is insufficient, the following
message box appears:
SINUMERIK 840Di NCK/PLC
Alarm: Not enough disk space for dumpfile on partition D:\.
To ensure that there is also sufficient storage space o n the hard disk of the
PCU in the event of an error, the storage space required for the function "Virtual
SRAM" is reserved immediately on selection of the function
(see Subsection 10.10.2, Page 10-399).
After acknowledging the relevant message box, start–up of the SINUMERIK
840Di is continued. Following start–up, the control operates normally, even if
the settings that caused the alarm are not corrected.
The user data will then be lost however if a subsequent serious exception Win-
dows NT (Blue Screen) then occurs. In the start–up of the SINUMERIK 840Di
that follows, the last valid version on the user data are loaded to the virtual
SRAM and the follwoing alarm issued (also refer to Loss of data, Page
Alarm: "4065 non–volatile memory restored from hard disk
(data loss possible)"
If a serious exception (Blue Screen) occurs, an appropriate message box ap-
pears. SINUIMERIK 840Di NCK and PLC continue to operate normally. To pre-
vent loss of user data, Windows NT must be terminated by one of the following
Interface signal: "PC shutdown" (see Subsection 16.1.1, Page 16-499)
UPS signal: "Shutdown" (see Subsection 10.10.2, Page 10-399ff)
The SINUMERIK 840Di must not be deactivated until the all the required data
have been saved on the hard disk of the PCU.
The following sequence of operations must be observed:
1. After the occurence of a serious exception (Blue Screen), the user has un-
limited time to switch off the SINUMERIK 840Di
(the serious exception and further processing of the SINUMERIK 840Di
NCK and PLC are displayed to the user via a message on screen).
10 NC Start-Up with HMI Advanced
10.4 Memory configuration