3
36
SYSMAC CP1L Getting Started Guide
3-4 Power Testing CP1L
3
Mou
nting and
Wir
in
g
Note
Battery
• Using a battery
The battery maintains the internal clock and retained regions of I/O memory
while the power supply is OFF.
If no battery is installed, or if the installed battery is running low, the internal
clock will stop, and data in the retained regions of I/O memory will be lost.
Data such as user programs and PLC system settings are not lost even when
the power is OFF and no battery is installed.
For details on replacing the battery, refer to
10-2 Replacing User-servicable
Parts
of
CP Series CP1L CPU Unit User’s Manual
(W462).
• Battery-free operation
If there is no need to reference the PLC clock and RAM data, CP1L can be
used without a battery (battery-free operation).
For details, refer to
6-5 Battery-free Operation
of
CP Series CP1L CPU Unit
User’s Manual
(W462).
W07E-EN-02+CP1L+GettingStartedGuide.book Seite 36 Montag, 15. September 2008 11:15 11
