Omron CPM1 Programming Manual

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Memory Areas Appendix C
Note 1. The units will be as follows, depending on the unit setting for the cycle monitor time (DM 6618):
Initial status: 0.1-ms unit
When 10-ms unit is set: 0.1-ms unit
When 100-ms unit is set: 1-ms unit
When 1-s unit is set: 10-ms unit
2. Areas that cannot be used are cleared when the power is turned on.
3. The contents of AR 10 is backed up by the built-in capacitor. If power is left OFF for longer than the
backup time, however, the contents may be cleared. For details regarding the backup time, refer to
the CPM1A or CPM1 Operation Manual.
SRM1 Memory Areas
Memory Area Structure
The following memory areas can be used with the SRM1.
AR 14 00 to 15 Maximum Cycle Time (4 digits BCD) (See note 1.)
The longest cycle time since the beginning of operation is stored. It is cleared at the
beginning, and not at the end, of operation.
The units can be any of the following, depending on the setting of in DM 6618.
Default: 0.1 ms; “10 ms” setting: 0.1 ms; “100 ms” setting: 1 ms; “1 s” setting: 10 ms
21
AR 15 00 to 15 Current Cycle Time (4 digits BCD) (See note 1.)
The most recent cycle time during operation is stored. The Current Cycle Time is not
cleared when operation stops.
The units can be any of the following, depending on the setting of in DM 6618.
Default: 0.1 ms; “10 ms” setting: 0.1 ms; “100 ms” setting: 1 ms; “1 s” setting: 10 ms
Word(s) Bit(s) Function Page
Data area Words Bits Function
IR area
1
Input area IR 000 to IR 009
(10 words)
IR 00000 to IR 00915
(160 bits)
These bits can be allocated to the external I/
O terminals. The ON/OFF status of the I/O
bits will be the same as the ON/OFF status
of the I/O terminals
Any I/O bits not used for I/O can be used as
work bits.
Output area IR 010 to IR 019
(10 words)
IR 01000 to IR 01915
(160 bits)
Work area IR 200 to IR 239
(40 words)
IR 20000 to IR 23315
(640 bits)
Work bits can be freely used within the pro-
gram. IR 232 to IR 239 however, cannot be
used as the the MACRO input area for the
MACRO instruction.
SR area SR 240 to SR 255
(16 words)
SR 24000 to SR 25507
(248 bits)
These bits serve as storage space for flags
and function set values/present values for
SRM1 operation. Refer to SR Area.
TR area --- TR 0 to TR 7
(8 bits)
When a complicated ladder diagram cannot
be recorded as a mnemonic these bits are
used to temporarily store ON/OFF status at
program branches. These temporary bits
cannot be used within the same block but if
the blocks are different several may be used.
The ON/OFF status of these bits cannot be
monitored using the monitoring function of a
peripheral device.
HR area
2
HR 00 to HR 19
(20 words)
HR 0000 to HR 1915
(320 bits)
These bits store data and retain their ON/
OFF status when power is turned off, or
operation starts or stops. They are used in
the same way as work bits.
AR area
2
AR 00 to AR 15
(16 words)
AR 0000 to AR 1515
(256 bits)
These bits serve specific functions such as
flags and control bits. AR 04 to 07 are used
as slaves. Refer to AR Area.
LR area
1
LR 00 to LR 15
(16 words)
LR 0000 to LR 1515
(256 bits)
Used for a 1:1 data link with another SRM1,
CQM1 or C200HS PC.

Omron CPM1 Specifications

General

Model	CPM1
Manufacturer	Omron
Instruction Set	Basic and advanced instructions
Power Supply	100 to 240 VAC or 24 VDC
Communication	RS-232C
I/O Points	10, 20, 30, or 40 points depending on the model
Timers	Yes, multiple timers available
Counters	Yes, multiple counters available
Input Voltage	24V DC
Output Type	Relay or transistor
Number of I/O Points	10, 20, 30, 40
Communication Ports	RS-232C (optional)
Operating Temperature	0°C to 55°C
Storage Temperature	-20°C
Humidity	10% to 90% (non-condensing)
Dimensions	Varies depending on the model
Weight	Varies depending on the model
Program Memory	2048 steps (2K steps)