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CP1H CPU Unit Operation
Section 2-3
Built-in Flash Memory
Flash memory is built into the CP1H CPU Units. Data in the following areas is
automatically backed up to the flash memory whenever it is written in any way
other than by instructions in the user program, e.g., when the CX-Programmer
or PT is used to transfer or edit data, edit the program online, or transfer data
from a Memory Cassette.
• User program area
• Parameter area (PLC Setup, routing tables, and unit setups for CJ-series
CPU Bus Units)
The next time the power supply is turned ON, the data in the built-in flash
memory is automatically transferred to user memory (i.e., the user program
area and parameter area).
It is also possible to save data from data areas in I/O memory in the built-in
flash memory using operations from the CX-Programmer.
The symbol table, comment file, and program index file can be stored in the
comment memory in flash memory. When the program is transferred from the
CX-Programmer to the CPU Unit, function block program information is also
stored automatically in flash memory.
Note
The BKUP indicator on the front of the CPU Unit will light whenever the built-in
flash memory is being written or the Memory Cassette is being accessed.
Never turn OFF the power supply to the CPU Unit when the BKUP indicator is
lit.
Memory Cassette
Memory Cassettes can be used as required in system operation and mainte-
nance. For example, they can be used to save programs, data memory con-
tents, PLC Setup data, or I/O comments from the CX-Programmer. The
contents of a Memory Cassette can also be automatically transferred if
desired.
Содержание CP1H-CPU - 05-2006
Страница 1: ...OPERATION MANUAL CP1H CPU Unit SYSMAC CP Series CP1H X40D CP1H XA40D CP1H Y20DT D Cat No W450 E1 02...
Страница 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Страница 3: ...iv...
Страница 11: ...xii TABLE OF CONTENTS...
Страница 15: ...xvi...
Страница 19: ...xx...
Страница 31: ...xxxii Conformance to EC Directives 6...
Страница 71: ...40 Function Blocks Section 1 5...
Страница 133: ...102 Computing the Cycle Time Section 2 7...
Страница 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Страница 411: ...380 Clock Section 6 8...
Страница 519: ...488 Replacing User serviceable Parts Section 10 2...
Страница 527: ...496 Standard Models Appendix A...
Страница 535: ...504 Dimensions Diagrams Appendix B...
Страница 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Страница 659: ...628 PLC Setup Appendix G...
Страница 665: ...634 Index work words 159 write protection 370...
Страница 667: ...636 Revision History...