Siemens SINUMERIK 805 Operating Instructions Manual page 191

06.90
7 Maintenance
7.2 Battery submodule
7.2 Battery submodule
If the voltage
is switched off, the RAM is backed up by a battery voltage. The following data
are maintained in the memory:
Part programs
Tool offsets
Setting data
Zero offsets
Machine data (NC-MD and PLC-MD)
R Parameter
PLC user program
User
texts (PLC alarm texts and PLC message
texts)
A battery submodule which is connected
to
the central processing unit via X321 backs up the
RAM memory.
_
—
J
Battery submodule
connection
Battery
submodule
X321
/
/
7
Battery submodule slot
7-2
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SINUMERIK 805, SW2
(BA)