Omron CPM1 Programming Manual

150
Using Memory Cassettes (CQM1 Only) Section 3-5
be written to the Memory Cassette. A non-fatal error will occur if an attempt
is made to write a program larger than 3.2 KW to the Memory Cassette.
2. When a 8-KW or larger Memory Cassette is installed in a CQM1-CPU11/
21-E CPU Unit with a 3.2-KW UM area, programs up to 3.2 KW long can
be read from the Memory Cassette. A non-fatal error will occur if an at-
tempt is made to read a program larger than 3.2 KW from the Memory Cas-
sette.
Note The two transfers shown above would be completed normally if the program
were 3.2 KW or smaller.
The approximate sizes of the programs in the UM area and Memory Cassette
can be determined by the content of AR 15, as shown in the following table.
In CQM1-CPU11/21-E CPU Units, the content of AR 1508 to AR 1515 is nor-
mally 04, and the content of AR 1500 to AR 1507 is normally 04 when a 4-KW
Memory Cassette is installed.
The size of the program indicated in AR 15 does not include the NOP(00)
instructions after END(01), but will include any instructions other than
NOP(00). Be sure to clear any unneeded instructions after END(01) to get an
accurate measurement of the program’s size.
3-5-3 Writing to the Memory Cassette
Writing to an EPROM-type Memory Cassette is executed using either the
Ladder Support Software (LSS) or SYSMAC Support Software (SSS), and a
PROM Writer. For instructions on using LSS, refer to the LSS Operation Man-
ual. For instructions on using SSS, refer to the SSS Operation Manual: C-
series PCs.
UM area (7.2 KW)
Program larger
than 3.2 KW
Memory Cassette (4 KW)
X
UM area (3.2 KW)
Program larger
than 3.2 KW
Memory Cassette (8 KW)
X
Program
location
Bits Content Meaning
Memory
Cassette
AR 1500
to
AR 1507
00 No Memory Cassette is installed or no program is
saved in the Memory Cassette.
04 The program is less than 3.2 KW long and can be
read from any CQM1 CPU Unit.
08 The program is less than 7.2 KW long and can be
read from CQM1-CPU4@-E/-EV1 CPU Units only.
UM area AR 1508
to
AR 1515
04 The program is less than 3.2 KW long and can be
written to any Memory Cassette.
08 The program is less than 7.2 KW long and can be
written to 8-KW or larger Memory Cassettes only.

Omron CPM1 Specifications

General

Brand	Omron
Model	CPM1
Category	Controller
Language	English