44
CP1L-EL/EM CPU Unit Operation
Section 2-3
2-3
CP1L-EL/EM CPU Unit Operation
2-3-1
Overview of CPU Unit Configuration
The CP1L-EL/EM CPU Unit memory consists of the following blocks.
(1)
• Data is backed up from RAM to the built-in flash memory when
changes are made, e.g., from the CX-Programmer.
• When the power supply is turned ON, data is transferred from the built-
in flash memory to RAM.
(2)
• A CX-Programmer operation can be used to transfer DM Area initial
values from RAM to the built-in flash memory.
• The PLC Setup can be set so that DM Area initial values are trans-
ferred from the built-in flash memory to RAM when the power supply
is turned ON.
(3)
• CX-Programmer operations can be used to transfer data from RAM to
the Memory Cassette or from the built-in flash memory to the Memory
Cassette.
RAM
DM Area
(2)
(3)
(1)
(1)
(3)
(3)
(3)
(3)
(3)
Built-in inputs
CPU Unit
User program
I/O memory
AR Area
PLC Setup
and other
parameters
Flash memory
User
program
Comment
memory
FB program
memory
DM Area
initial values
PLC Setup
and other
parameters
Memory
Cassette
External analog
setting input
Built-in outputs
Access
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: ......