Omron SYSMAC CQM1H Series, Руководство по программированию

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Memory Area Structure Section 3-1
Note 1. IR and LR bits that are not used for their allocated functions can be used
as work bits.
2. A minimum 2,528 bits are available as work bits. Other bits can be used as
work bits when they are not used for their allocated functions, so the total
number of available work bits depends on the configuration of the PC.
3. When accessing a PV, TIM/CNT numbers are used as word data; when ac-
cessing Completion Flags, they are used as bit data.
4. Data in DM 6144 to DM 6655 cannot be overwritten from the program.
SR area 184 bits SR 244 to
SR 255
SR 24400 to
SR 25507 These bits serve specific functions such as flags and
control bits.
HR area 1,600
bits HR 00 to
HR 99 HR 0000 to
HR 9915 These bits store data and retain their ON/OFF status
when power is turned OFF.
AR area 448 bits AR 00 to
AR 27
AR 0000 to
AR 2715 These bits serve specific functions such as flags and
control bits.
TR area 8 bits --- TR 0 to TR 7 These bits are used to temporarily store ON/OFF status
at program branches.
LR area (note 1) 1,024
bits LR 00 to
LR 63 LR 0000 to
LR 6315 Used for 1:1 Data Link through the RS-232 port or
through a Controller Link Unit.
Timer/Counter area
(note 3) 512 bits TIM/CNT 000 to
TIM/CNT 511
(timer/counter numbers)
The same numbers are used for both timers and
counters. When TIMH(15) is being used, timer numbers
000 to 015 can be interrupt-refreshed to ensure proper
timing during long cycles.
DM area Read/write 3,072
words DM 0000 to
DM 3071 --- DM area data can be accessed in word units only. Word
values are retained when power is turned OFF.
3,072
words DM 3072 to
DM 6143 --- Available in CQM1H-CPU51/61 CPU Units only.
Read-only
(note 4) 425
words DM 6144 to
DM 6568 --- Cannot be overwritten from program (only a
Programming Device).
DM 6400 to DM 6409 (10 words):
Controller Link DM parameter area
DM 6450 to DM 6499 (50 words):
Routing table area
DM 6550 to DM 6559 (10 words):
Serial Communications Board settings
Error log
area
(note 4) 31
words DM 6569 to
DM 6599 --- Used to store the time of occurrence and error code of
errors that occur.
PC Setup
(note 4) 56
words DM 6600 to
DM 6655 --- Used to store various parameters that control PC opera-
tion.
EM area 6,144
words EM 0000 to
EM 6143 --- EM area data can be accessed in word units only. Word
values are retained when power is turned OFF.
Available in the CQM1H-CPU61 CPU Unit only.
Data area Size Words Bits Function