Siemens SINUMERIK 840Di Manual page 182

6 Turning On and Ramp Up
6.3 Ramp-up
Table 6-1 SRAM handling
Serial No. SRAM
MCI board MCI board
OK
Known yes
Known no
Known no
Known no
Unknown yes
Unknown yes
( )
SW update
Unknown yes
Unknown yes
Unknown no
Unknown no
Unknown no
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SRAM image SRAM backup
(hard disk) (hard disk)
OK OK
not applicable not applicable
yes not applicable
no yes
no no
yes not applicable
not applicable not applicable
no yes
no no
yes not applicable
no yes
no no
Serial no. of MCI board
Known: The serial no. of the MCI board complies with the serial number last stored on
the PCU.
Unknown: The serial no. of the MCI board does not comply with the serial number last
stored on the PCU.
Unknown: Provided that the SRAM of the MCI board is OK, the system does not request
( ) which SRAM (MCI or IMAGE) is to be used when it runs up for the first time
SW update
after performing a SW update. The SRAM of the MCI board is always used.
SRAM image or SRAM backup (hard disk) "OK"
Yes: The following criteria must be fulfilled:
1. NC and PLC software version of SRAM image or backup must comply
with the installed software version.
2. Windows NT must be shut down correctly (to do so, the POWER FAIL
mechanism of the SINUMERIK 840Di is also sufficient)
3. The checksum test using the SRAM image or backup must be successful.
4. The battery status at the time of saving of the SRAM image must be O.K.
Used user data
MCI: The battery-backed user data in the SRAM of the MCI board will be used.
IMAGE: The user data battery-backed in the SRAM image on the hard disk of the
PCU will be used.
BACKUP: The user data battery-backed in the SRAM backup on the hard disk of the
PCU will be used.
Start-up The user data of the NC will be deleted and default machine data
will be loaded.
Used user data / remark
MCI / normal ramp-up
IMAGE / no message box or alarms;
see Subsection 6.3.4; case 1
BACKUP / message box and alarm;
see Subsection 6.3.4; case 2
Start-up / Restart-up required
MCI or IMAGE / Request carried out;
see Subsection 6.3.6
MCI / message box;
see Subsection 6.3.5
MCI or BACKUP / Request carried out; if BACKUP
is selected, message box and alarm will occur;
see Subsection 6.3.4; case 2
MCI / message box;
see Subsection 6.3.5
IMAGE / MessageBox;
see Subsection 6.3.4; case 1
BACKUP / message box and alarm;
see Subsection 6.3.4; case 2
Start-up / Restart-up required
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
06.03