656
Replacing User-serviceable Parts
Section 13-2
Procedure
1,2,3...
1.
Turn OFF the power to the CPU Unit.
or
If the CPU Unit has not been ON, turn it ON for at least five minutes and
then turn it OFF.
Note
If power is not turned ON for at least five minutes before replacing the
battery, the capacitor that backs up memory when the battery is re-
moved will not be fully charged and memory may be lost before the
new battery is inserted.
2.
Open the compartment on the CPU Unit and carefully draw out the battery.
3.
Remove the battery connector.
4.
Connect the new battery, place it into the compartment, and close the cover.
!WARNING
Never short-circuit the battery terminals; never charge the battery; never dis-
assemble the battery; and never heat or incinerate the battery. Doing any of
these may cause the battery to leak, burn, or rupturing resulting in injury, fire,
and possible loss of life or property. Also, never use a battery that has been
dropped on the floor or otherwise subject to shock. It may leak.
!Caution
You must complete this procedure within five minutes after turning OFF the
power to the CPU Unit to ensure memory backup. If the procedure is not com-
pleted within 5 minutes, data may be lost.
!Caution
UL standards require that batteries be replaced by experienced technicians.
Always place an experienced technician in charge of battery replacement.
!Caution
Turn ON the power after replacing the battery for a CPU Unit that has been
unused for a long time. Leaving the CPU Unit unused again without turning
ON the power even once after the battery is replaced may result in a shorter
battery life.
Note
The battery error will automatically be cleared when a new battery is inserted.
00
NC
01
COM
ERR/ALM
LN
POWER
RUN
INH
Summary of Contents for CP1L-EL20DR-D
Page 3: ...CP1L EL20D CP1L EM30D CP1L EM40D CP1L EL EM CPU Unit Operation Manual Produced July 2017...
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Software Licenses and Copyrights 7...
Page 192: ...158 Trial Operation and Debugging Section 5 3...
Page 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Page 666: ...632 Trouble Shooting Section 11 7...
Page 696: ...662 Standard Models Appendix A...
Page 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Page 836: ...802 PLC Setup Appendix G...
Page 838: ...804 TCP Status Transitions Appendix H...
Page 840: ...806 Ethernet Network Parameters Appendix I...
Page 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Page 844: ...810 Ethernet Specifications Appendix K...
Page 851: ...Index 817 work words 118 write protection 447...
Page 852: ...818 Index...
Page 854: ...820 Revision History...
Page 855: ......