11 Data Backup/CPU Replacement 01.99
11.1.7 Loading from hard disk (control startup with user data)
11.1.7 Loading from hard disk (control startup with user data)
Procedure for loading data from hard disk (HD) to RAM areas, e.g. after battery or CSB failure.
The sequence is also applicable for the first startup (series installation and startup). User data
must be loaded from external sources to the hard disk before the start.
Load NC, PLC, cycle machine data
Position for installation and startup
Control is booted in general reset mode
1) Control is off
2) Select key position 4 on the CSB
3) Switch on control

Since a loss of data has occurred (e.g. battery failure) a forced booting

of the system software is carried out. A forced booting of the PLC

software is a prerequisite for correct PLC installation and startup

(PLC general reset).

4) Control activates various alarm
messages while still in the reset mode
5) Area switchover key
6) SK ”Diagnosis”
7) SK ”Installation and startup”
8) Vertical SK ”Clock/Date”
9) Set time and date
10) Set vertical SK
11) SK ”General reset mode”
12) SK ”Forced booting NCK PLC”
13) ”Recall” key
14) Vertical SK ”NCK -Power on”
15) SK ”Machine data”
16) SK ”File functions”
17) Cursor on Standard data
Standard_T TEA1
or Standard_M TEA1
18) SK ”Loading from disk”
Load
standard
data TEA1
1
11–10 © Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)