Omron CPM1 Programming Manual

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CQM1 Memory Area Functions Section 3-1
The bits in the ranges shown below have specific functions, but can still be
used as work bits when their specific functions are not being used.
IR 200 to IR 215 and IR 240 to IR 243 will be used in future functions, but they
can be used as work bits for the time being.
LR 00 to LR 63 are used as link bits, but they can also be used as work bits
when not linked to another CQM1.
I/O Bit Allocation I/O words are allocated in order from the left, beginning with IR 001 for the
Input Unit and IR100 for the Output Unit. The CPU Unit’s input points are allo-
cated to IR 000. Even if the Input Unit and Output Unit are mounted at random
the input words and output words are in separate portions of the IR area.
One word is allocated even for 8-point I/O Units. Bit usage for 8-point I/O Units
are shown in the following table.
The number of I/O bits that can be allocated depends on the CQM1 CPU Unit
being used, as shown in the following table.
As many as 256 I/O bits (16 words) can be allocated for the CQM1. A 16-point
I/O Unit is allocated two words and must be counted as 16 points in calculat-
ing the total.
Note The SYSMAC-CPT will display or print only 12 I/O words in the I/O table dis-
play for the CQM1, i.e., IR 000 to IR 011. IR 012 to IR 015 will not be dis-
played for the CQM1-CPU4@-EV1 CPU Unit’s I/O table, even though it has an
I/O capacity of 256 pts (16 words). You will be able to input IR 012 to IR 015
for the CQM1-CPU4@-EV1 CPU Unit and the program will execute correctly
for these bits, but “I” and “Q” will not be displayed to indicate input and output
words/bits.
Range Function
IR 001 to IR 015 When allocated to Input Units, these bits serve as input bits.
IR 096 to IR 099 When the MACRO instruction is used, these bits serve as oper-
and input bits.
IR 100 to IR 115 When allocated to Output Units, these bits serve as output bits.
IR 196 to IR 199 When the MACRO instruction is used, these bits serve as oper-
and output bits.
IR 220 to IR 223 In the CQM1-CPU42-EV1, these bits serve to store the analog
SV. They can be used as work bits in other CPU Units.
IR 230 to IR 231 When high-speed counter 0 is used, these bits are used to store
its present value.
IR 232 to IR 235 In the CQM1-CPU43/44-EV1, these bits are used to store the
present values for high-speed counters 1 and 2. They can be
used as work bits in other CPU Units.
IR 236 to IR 239 In the CQM1-CPU43-EV1, these bits are used to store the
present values for pulse outputs from ports 1 and 2. In the
CQM1-CPU44-EV1, they are used by the system. They can be
used as work bits in other CPU Units.
Unit Bits 0 to 7 Bits 8 to 15
Input Unit Input bits Always OFF (0)
Output Unit Output bits Work bits
CPU Unit model Number of I/O bits
CQM1-CPU11/21-E Up to 128 bits (8 words) can be used for I/O bits.
CQM1-CPU4@-EV1 Up to 265 bits (16 words) can be used for I/O bits.

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)