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141
Overview of I/O Memory Area
Section 4-1
Auxiliary Area (A)
These words are allocated to specific functions in the system.
Refer to
Appendix C Auxiliary Area Allocations by Function
and
Appendix D
Auxiliary Area Allocations by Address
for details on the Auxiliary Area.
Temporary Relay Area
(TR)
The TR Area contains bits that record the ON/OFF status of program
branches. Refer to the
CP1H/CP1L Programming Manual
for details.
Data Memory Area (D)
The DM Area is a multi-purpose data area that is normally accessed only in
word-units. These words retain their content when the PLC is turned ON or
the operating mode is switched between PROGRAM mode and RUN or MON-
ITOR mode.
Timer Area (T)
There are two parts to the Timer Area: the Timer Completion Flags and the
timer Present Values (PVs). Up to 4,096 timers with timer numbers T0 to
T4095 can be used.
Timer Completion Flags
These flags are read as individual bits. A Completion Flag is turned ON by the
system when the corresponding timer times out (i.e., when the set time
elapses).
Timer PVs
The PVs are read and written as words (16 bits). The PVs count up or down
as the timer operates.
Counter Area (C)
There are two parts to the Counter Area: the Counter Completion Flags and
the Counter Present Values (PVs). Up to 4,096 counters with counter num-
bers C0 to C4095 can be used.
Counter Completion Flags
These flags are read as individual bits. A Completion Flag is turned ON by the
system when the corresponding counter counts out (i.e., when the set value is
reached).
A447
A448
A959
15
Read-write area
Read-only area
Word
Bit
D0
D32767
15
0
Bit
D0
D32767
15
0
Bit
D9999
D32000
CPU Unit with 10, 14 or 20 I/O Points
CPU Unit with 30, 40 or 60 I/O Points
Содержание CP1L CPU UNIT - 03-2009
Страница 1: ...Cat No W462 E1 06 CP1L CPU Unit SYSMAC CP Series CP1L L_0D_ CP1L M_0D_ OPERATION MANUAL...
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Страница 4: ...iv...
Страница 10: ...x...
Страница 22: ...xxii...
Страница 34: ...xxxiv Conformance to EC Directives 6...
Страница 70: ...36 Function Blocks Section 1 5...
Страница 584: ...550 Trouble Shooting Section 8 7...
Страница 627: ...593 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
Страница 630: ...596 Sample Application Section 9 12...
Страница 654: ...620 Troubleshooting Unit Errors Section 11 4...
Страница 662: ...628 Replacing User serviceable Parts Section 12 2...
Страница 668: ...634 Standard Models Appendix A...
Страница 698: ...664 Auxiliary Area Allocations by Function Appendix C...
Страница 746: ...712 Auxiliary Area Allocations by Address Appendix D...
Страница 773: ...739 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 774: ...740 Connections to Serial Communications Option Boards Appendix F...
Страница 806: ...772 Index...
Страница 808: ...774 Revision History...