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CPU Units Section 3-1
Note Do not remove the battery except when replacing it. If the battery is not
replaced within 5 minutes after removal, internal data may be lost. For details
on the replacement method, refer to 9-1 Battery Replacement.
3-1-4 DIP Switch
The DIP switch is used to set the following: Memory write protection, auto-
transfer of data from Memory Cassette, the Programming Console display
language, the expansion instruction setting, communications settings, a user-
determined setting, and the device connected to peripheral port.
Refer to 6-1 DIP Switch Settings.
3-1-5 Memory Cassettes
A Memory Cassette can be mounted in the CPU Unit to transfer or compare
the following data between the CPU Unit and the Memory Cassette.
• User program
•Data memory
(Read-only DM: DM 6144 to DM 6568; PC Setup: DM 6600 to DM 6655)
• Expansion instruction information
It is not necessary to specify the areas to be read or written. All the data is
transferred in one batch. A Memory Cassette must be purchased separately.
Memory Cassette Types There are three types of Memory Cassette: EEPROM, EPROM, and Flash
Memory. The models of Memory Cassette that are available are listed in the
following tables.
Note 1. Data can be read and written for an EEPROM Memory Cassette with a
Programming Device.
2. Data can be read from a EPROM Memory Cassette with a Programming
Device, but must be written with a PROM Writer.
Memory Cassette
CPU Unit
User program
Data memory
(read-only DM,
PC Setup)
Expansion
instruction
information
Transfer or
comparison
Memory Cassette
I/O memory
Memory Model Specifications
EEPROM
1
CQM1-ME04K 4 Kwords without clock
CQM1-ME04R 4 Kwords with clock
CQM1-ME08K 8 Kwords without clock
CQM1-ME08R 8 Kwords with clock
EPROM
2
CQM1-MP08K 8 Kwords, 16 Kwords, or 32 Kwords without clock
CQM1-MP08R 8 Kwords, 16 Kwords, or 32 Kwords with clock
Flash
1, 3
CQM1H-ME16K 16 Kwords without clock
CQM1H-ME16R 16 Kwords with clock
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