Omron CJ1M-CPU series User Manual (English)

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CJ1-H and CJ1M CPU Unit Features Section 1-3

Faster Execution of

Common Instructions

Extensive research on applications of CJ1 CPU Units was used to identify the

20 most commonly used instructions of the more than 400 supported instruc-

tions (see below), and execution speed for these instructions was increased

by 10 to 20 times previous performance.

CPS (SIGNED BINARY COMPARE)

JMP (JUMP)

CPSL (DOUBLE SIGNED BINARY COMPARE)

CJP (CONDITIONAL JUMP)

XFER (BLOCK TRANSFER)

BCNT (BIT COUNTER)

MOVB (MOVE BIT)

MLPX (DATA DECODER)

MOVD (MOVE DIGITS)

BCD (BINARY-TO-BCD)

BSET (BLOCK SET)

SBS/RET (SUBROUTINE CALL/RETURN)

System Bus Speed

Doubled

The speed of transferring data between the CPU Unit and CPU Bus Units has

been doubled to increase overall system performance.

Parallel Processing of

Instructions and

Peripheral Servicing

A special mode is supported that enables parallel processing of instruction

execution and peripheral device servicing to support the following types of

application.

• Extensive data exchange with a host not restricted by the program capac-

ity in the CJ1-H CPU Unit

• Consistently timed data exchange with SCADA software

• Eliminating the effects on cycle time of future system expansion or

increases in communications

Less Cycle Time

Fluctuation for Data

Processing

Table data processing and text string processing, which often require time,

can be separated over several cycles to minimize fluctuations in the cycle time

and achieve stable I/O response.

Better Data Link and

Remote I/O Refreshing

CPU Bus Unit refresh response has been increased both by reductions in the

cycle time itself and by the addition of an immediate I/O refresh instruction for

CPU Bus Units (DLNK(226)). This instruction will refresh data links,

DeviceNet remote I/O, protocol macros, and other special data for CPU Bus

Units.

The response of a CJ1-H CPU Unit is approximately 2.4 times that of a CJ1

CPU Unit. And, for a cycle time of approximately 100 ms or higher, the

increase in the data link response is comparable to that for the cycle time.

Immediate Refreshing for

CPU Bus Units

Although previously, I/O refreshing for CPU Bus Units was possible only after

program executions, a CPU BUS I/O REFRESH instruction (DLNK(226)) has

been added to enable immediate I/O refreshing for CPU Bus Units. Data links,

DeviceNet remote I/O, an other unique CPU Bus Unit refreshing can be

refreshed along with words allocated to the CPU Bus Unit in the CIO and DM

Areas whenever DLNK(226) is executed. This is particularly effective for

longer cycle times (e.g., 100 ms or longer). (Data exchange for data links,

DeviceNet remote I/O, and other network communications are also affected

by the communications cycle time, i.e., DLNK(226) refreshes data only

between the CPU Bus Units and the CPU Unit, not the data on the individual

networks.)

Other manuals for Omron CJ1M-CPU series

Programming Manual383 pages

Replacement Guide24 pages

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Omron CJ1M-CPU series Specifications

General

Series	CJ1M
Program Memory	Flash Memory
Power Supply Voltage	24V DC
Operating Temperature	0 to 55°C
Type	Programmable Controller
CPU Type	CPU11, CPU12, CPU13, CPU21, CPU22, CPU23
Data Memory	SRAM
Data Memory Capacity	32K words (CJ1M-CPU11/12/13), 64K words (CJ1M-CPU21/22/23)
Instruction Execution Time (Basic Instructions)	0.1 μs (LD instruction)
Instruction Set	Basic instructions, advanced instructions
Programming Language	Ladder Diagram, Structured Text, Function Block Diagram
Communication Ports	RS-232C
Expansion Slots	Up to 3
Mounting	DIN rail mounting
Storage Temperature	-25 to 70°C
Dimensions	90 x 90 x 70 mm
Weight	Approx. 200g (0.44 lb)
Number of Instructions	Over 400 instructions