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CQM1-CQM1H Comparison Section 1-5
DM area CQM1H-
CPU51/61:
6,656 words
CQM1H-
CPU11/21:
3,584 words
DM area data is accessed
(read/write) in word (16-bit)
units. Word values are
retained when the power is
turned OFF or the mode is
changed.
CQM1-
CPU4@-EV1:
6,656 words
CQM1-
CPU11/21-
EV1: 1,536
words
DM area data is accessed
(read/write) in word (16-bit)
units only. Word values are
retained when the power is
turned OFF or the mode is
changed.
Read/write CQM1H-CPU51/61:
DM 0000 to DM 6143
(6,144 words)
CQM1H-CPU21/11:
DM 0000 to DM 3071
(3,072 words)
Can be written by program.
Read/write CQM1-
CPU4@-EV1: DM 0000 to
DM 6143 (6,144 words)
CQM1-CPU11/21-EV1:
DM 0000 to DM 1023
(1,024 words)
Can be written by program.
Read-only DM 6144 to DM 6568
(425 words)
Cannot be written by
program.
Read-only DM 6144 to DM 6568
(425 words)
Cannot be written by pro-
gram.
Controller Link
DM parameter
area
CQM1H-CPU51/61:
DM 6400 to DM 6409
(11 words)
CQM1H-CPU11/21: None
None ---
Routing table
area
CQM1H-CPU51/61:
DM 6450 to DM 6499
(50 words)
CQM1H-CPU11/21: None
None ---
Serial Commu-
nications Board
CQM1H-CPU51/61:
DM 6550 to DM 6559
(10 words)
CQM1H-CPU11/21: None
None ---
Error history
area
DM 6569 to DM 6599
(31 words)
Error history
area
DM 6569 to DM 6599
(31 words)
PC Setup DM 6600 to DM 6655
(56 words)
PC Setup DM 6600 to DM 6655
(56 words)
EM area 6,144 words EM area data can be read or
written in word (16-bit) units.
Contents are retained when
the power is turned OFF or
the mode is changed. Acces-
sible using instructions from
the program or
Programming Devices.
Read/write words:
EM 0000 to EM 6143
(6,144 words)
None ---
Memory Cassette
(EEPROM or flash
memory)
Mounted from the front of the CPU Unit. Memory Cassettes are used to store and read the
user’s program, DM (read-only data and PC Setup), and expansion instruction information (as
one block of data).
It is possible to set the CPU Unit so that when power is turned ON, data stored in the Memory
Cassette (user’s program, DM, expansion instruction information) is automatically transferred,
in one block, to the CPU Unit (auto-boot). Two-way transfer, and comparison of data between
the CPU Unit and Memory Cassette is possible using AR area settings.
In addition to 4-Kword and 8-Kword EEPROM
Memory Cassettes, 15.2-Kword flash memory
Memory Cassettes are also available.
4-Kword and 8-Kword EEPROM Memory
Cassettes are available.
Trace memory 1, 024 words (trace comparison data:
12 points, 3 words)
CQM1-CPU4@-EV1: 1,024 words (trace
comparison data: 12 points, 3 words)
Item CQM1H CQM1
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